Brands Vehicles

Lowest Prices

Free Returns

Online Since 2009

JOIN GEARS TO SAVE 5%

ACDelco AFS21 Oxygen Sensor


Brand:	ACDelco
Part Number:	AFS21
UPC:	00707773489673
Weight:	0.2 lbs
Condition:	New

Availability:	0 in Stock
	OUT OF STOCK

Product Information

Description:

Get the ACDelco AFS21 Oxygen Sensor for your vehicle. Buy now and secure your purchase online!

GM Genuine Parts Oxygen (O2) Sensors are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These sensors are special feedback sensors on your vehicle's exhaust system and measure the proportion of oxygen in exhaust gases. Using this measurement, the engine control module (ECM) can adjust the air/fuel ratio to near the optimal value of 14.7:1. At this ratio, engine performance, emissions, and fuel economy are all optimized. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE). ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

Detects oxygen content in the exhaust gases to help optimize emissions
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM regularly updates production and service part designs to integrate new materials and technologies
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)

Specifications:

Connector Gender:

Female

Connector Shape:

Round

Height (in):

3 in

Length (in):

16.91 in

Length (mm):

429.7 mm

Mounting Type:

POSN 1

Programming Required:

Sensor Type:

Non Heated

Thread Diameter:

18 mm

Universal Or Specific Fit:

Specific

Weight (lb):

0.2 lb

Width (in):

3 in

Wire Gauge Measurement:

18 Gauge

Wire Quantity:

Wiring Harness Length:

343.4 mm

Country of Origin:

Select a vehicle to narrow ACDelco AFS21 Oxygen Sensor fitment info!

Last Updated: 03/02/2024

Years

Vehicle

Per Vehicle

Position

Fit Notes

Fitment Notes

Buick Century

2.2L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LN2
8th VIN Digit: 4

Buick Century

2.2L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LN2
8th VIN Digit: 4

1 Per Vehicle

Buick Century

3.3L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

Buick Century

3.3L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV

1 Upstream

W/WIRE LEAD)(M18X1.5-6E
MATING CONN USE 12117385
8th VIN Digit: R

Buick Century

2.5L L4 Gas OHV

Upstream W/WIRE LEAD)(M18X1.5-6E
MATING CONN USE 12117385
8th VIN Digit: R

1 Per Vehicle

1989

Buick Century

3.3L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

3.3L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

1988

Buick Century

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

Buick Century

2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

2.5L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Commercial Chassis

5.7L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

Buick Commercial Chassis

5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1991

Buick Commercial Chassis

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

Buick Commercial Chassis

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

Buick Electra

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick Electra

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick Electra

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

Buick Electra

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

1 Per Vehicle

Buick Electra

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick Electra

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

1985

Buick Electra

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

1985

Buick Electra

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV,
5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

Buick Electra

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV,
5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

1 Per Vehicle

Buick Electra

5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

1984

Buick Electra

4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Electra

4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Electra

4.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Electra

4.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick Electra

4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, TYPE #21

Buick Electra

4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, TYPE #21

1 Per Vehicle

Buick Estate Wagon

5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Estate Wagon

5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick LeSabre

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(BOSCH

Buick LeSabre

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(BOSCH

1 Per Vehicle

1991

Buick LeSabre

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER/BOSCH

Buick LeSabre

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER/BOSCH

1 Per Vehicle

Buick LeSabre

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER/BOSCH
Eng: LN3
8th VIN Digit: C

Buick LeSabre

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER/BOSCH
Eng: LN3
8th VIN Digit: C

1 Per Vehicle

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1988

Buick LeSabre

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(BOSCH
Eng: LN3
8th VIN Digit: 3

Buick LeSabre

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(BOSCH
Eng: LN3
8th VIN Digit: 3

1 Per Vehicle

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE)(BOSCH

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE)(BOSCH

1 Per Vehicle

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick LeSabre

3.8L V6 Gas OHV,
5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

1986

Buick LeSabre

3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE)(BOSCH

Buick LeSabre

3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE)(BOSCH

1 Per Vehicle

1986

Buick LeSabre

3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick LeSabre

3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick LeSabre

5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick LeSabre

5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick LeSabre

4.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick LeSabre

4.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

Buick Park Avenue

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: L27
8th VIN Digit: L

Buick Park Avenue

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: L27
8th VIN Digit: L

1 Per Vehicle

Buick Park Avenue

3.8L V6 Gas OHV Supercharged

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: L67
8th VIN Digit: 1

Buick Park Avenue

3.8L V6 Gas OHV Supercharged

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: L67
8th VIN Digit: 1

1 Per Vehicle

1991

Buick Reatta

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER

Buick Reatta

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER

1 Per Vehicle

Buick Reatta

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

Buick Reatta

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

1 Per Vehicle

1993

Buick Regal

3.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
FEDERAL EMIS(NA5)
Eng: LHO
8th VIN Digit: T

Buick Regal

3.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
FEDERAL EMIS(NA5)
Eng: LHO
8th VIN Digit: T

1 Per Vehicle

Buick Regal

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20
Eng: L27
8th VIN Digit: L

Buick Regal

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20
Eng: L27
8th VIN Digit: L

1 Per Vehicle

Buick Regal

3.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20
Eng: LHO
8th VIN Digit: T

Buick Regal

3.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20
Eng: LHO
8th VIN Digit: T

1 Per Vehicle

Buick Regal

3.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: LHO
8th VIN Digit: T

Buick Regal

3.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Eng: LHO
8th VIN Digit: T

1 Per Vehicle

1989

Buick Regal

2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
8th VIN Digit: W

Buick Regal

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
8th VIN Digit: W

1 Per Vehicle

1988

Buick Regal

2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

Buick Regal

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21

1 Per Vehicle

1987

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo,
5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
GNX PKG(T2L)

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo,
5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
GNX PKG(T2L)

1 Per Vehicle

Buick Regal

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Regal

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Regal

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

3.8L V6 Gas OHV,
3.8L V6 Gas OHV Turbo

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

1985

Buick Regal

5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

1985

Buick Regal

5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Regal

5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Regal

4.3L V6 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Regal

4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Regal

4.3L V6 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

1984

Buick Regal

4.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Regal

4.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Regal

4.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

4.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Regal

5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Regal

5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Riviera

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER

Buick Riviera

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER

1 Per Vehicle

Buick Riviera

3.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

Buick Riviera

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

1 Per Vehicle

Buick Riviera

3.8L V6 Gas OHV Turbo,
4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Riviera

3.8L V6 Gas OHV Turbo,
4.1L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Roadmaster

5.7L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

Buick Roadmaster

5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1991

Buick Roadmaster

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

Buick Roadmaster

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1988

Buick Skyhawk

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

Buick Skyhawk

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD

1 Per Vehicle

1987

Buick Skyhawk

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC,
2.0L L4 Gas SOHC Turbo

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Skyhawk

2.0L L4 Gas OHV,
2.0L L4 Gas SOHC,
2.0L L4 Gas SOHC Turbo

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

1987

Buick Skyhawk

2.0L L4 Gas SOHC Turbo

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Eng: LT3
8th VIN Digit: M

Buick Skyhawk

2.0L L4 Gas SOHC Turbo

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Eng: LT3
8th VIN Digit: M

1 Per Vehicle

Buick Skyhawk

1.8L L4 Gas SOHC Turbo

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Skyhawk

1.8L L4 Gas SOHC Turbo

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Skyhawk

2.0L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Skyhawk

2.0L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Skyhawk

1.8L L4 Gas SOHC

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Skyhawk

1.8L L4 Gas SOHC

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

1982

Buick Skyhawk

1.8L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Skyhawk

1.8L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Skylark

2.4L L4 Gas DOHC

1 Upstream

TLEV CALIF EMIS(NB7),FED EMIS SYS(NF2)
MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LD9
8th VIN Digit: T

Buick Skylark

2.4L L4 Gas DOHC

Upstream TLEV CALIF EMIS(NB7),FED EMIS SYS(NF2)
MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LD9
8th VIN Digit: T

1 Per Vehicle

1995

Buick Skylark

2.3L L4 Gas DOHC

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: D

Buick Skylark

2.3L L4 Gas DOHC

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: D

1 Per Vehicle

Buick Skylark

2.3L L4 Gas SOHC

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: 3

Buick Skylark

2.3L L4 Gas SOHC

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: 3

1 Per Vehicle

Buick Skylark

3.3L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

Buick Skylark

3.3L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

1 Per Vehicle

Buick Skylark

2.5L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18X1.5-6E
8th VIN Digit: U

Buick Skylark

2.5L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18X1.5-6E
8th VIN Digit: U

1 Per Vehicle

Buick Skylark

2.3L L4 Gas DOHC

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: D

Buick Skylark

2.3L L4 Gas DOHC

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: D

1 Per Vehicle

Buick Skylark

2.5L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: U

Buick Skylark

2.5L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: U

1 Per Vehicle

1988

Buick Skylark

3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: L

Buick Skylark

3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: L

1 Per Vehicle

Buick Skylark

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

Buick Skylark

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

1 Per Vehicle

Buick Skylark

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Buick Skylark

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Buick Somerset

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

Buick Somerset

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

1 Per Vehicle

1985

Buick Somerset Regal

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

Buick Somerset Regal

2.5L L4 Gas OHV,
3.0L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
Mfr Code: THM125C

1 Per Vehicle

Cadillac Brougham

5.0L V8 Gas OHV,
5.7L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Except LEADED FUEL EMIS EXPORT (NM8)

Cadillac Brougham

5.0L V8 Gas OHV,
5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1990

Cadillac Brougham

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
Except LEADED FUEL EMIS EXPORT (NM8)
8th VIN Digit: Y

Cadillac Brougham

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
Except LEADED FUEL EMIS EXPORT (NM8)
8th VIN Digit: Y

1 Per Vehicle

1990

Cadillac Brougham

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: 9

Cadillac Brougham

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: 9

1 Per Vehicle

1990

Cadillac Brougham

5.7L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: 7

Cadillac Brougham

5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
8th VIN Digit: 7

1 Per Vehicle

1989

Cadillac Brougham

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
Except LEADED FUEL EMIS EXPORT (NM8)

Cadillac Brougham

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1988

Cadillac Brougham

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
CALIFORNIA EMIS(NB2)

Cadillac Brougham

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(W/WIRE LEAD)(M18 X 1.5 THD
CALIFORNIA EMIS(NB2)

1 Per Vehicle

1987

Cadillac Brougham

5.0L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Cadillac Brougham

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Cadillac Cimarron

2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Cadillac Cimarron

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Cadillac Cimarron

2.8L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Cadillac Cimarron

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Cadillac Cimarron

2.0L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Cadillac Cimarron

2.0L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

Cadillac Cimarron

2.0L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Cadillac Cimarron

2.0L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

1982

Cadillac Cimarron

1.8L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

Cadillac Cimarron

1.8L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE

1 Per Vehicle

1982

Cadillac Cimarron

1.8L L4 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Cadillac Cimarron

1.8L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

1993

Cadillac Commercial Chassis

4.9L V8 Gas OHV,
5.7L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Except LEADED FUEL EMIS EXPORT (NM8)

Cadillac Commercial Chassis

4.9L V8 Gas OHV,
5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

1987

Cadillac Commercial Chassis

4.1L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

Cadillac Commercial Chassis

4.1L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

1 Per Vehicle

1987

Cadillac DeVille

4.1L V8 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

Cadillac DeVille

4.1L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

1 Per Vehicle

1985

Cadillac DeVille

4.1L V8 Gas OHV,
4.3L V6 Diesel OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

Cadillac DeVille

4.1L V8 Gas OHV,
4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21)(1 WIRE

1 Per Vehicle

1982

Cadillac DeVille

4.1L V6 Gas OHV

1 Upstream

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
8th VIN Digit: 4

Cadillac DeVille

4.1L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(1 WIRE
8th VIN Digit: 4

1 Per Vehicle

See More Fitments on Page 2 - or - Select Your Vehicle Above

Customers who bought ACDelco AFS21 Oxygen Sensor also purchased

ACDelco AFS21 Oxygen Sensor

Product Information

Description:

Features and Benefits:

Specifications:

Select a vehicle to narrow ACDelco AFS21 Oxygen Sensor fitment info!

Buick Century 2.2L L4 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVEREng: LN28th VIN Digit: 4

Buick Century

2.2L L4 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVEREng: LN28th VIN Digit: 4 1 Per Vehicle

Buick Century 3.3L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER8th VIN Digit: N

Buick Century

3.3L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER8th VIN Digit: N 1 Per Vehicle

Buick Century 2.5L L4 Gas OHV

1

Upstream

W/WIRE LEAD)(M18X1.5-6E MATING CONN USE 121173858th VIN Digit: R

Buick Century

2.5L L4 Gas OHV Upstream W/WIRE LEAD)(M18X1.5-6E MATING CONN USE 121173858th VIN Digit: R 1 Per Vehicle

Buick Century 3.3L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

3.3L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD 1 Per Vehicle

Buick Century 2.5L L4 Gas OHV,2.8L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

2.5L L4 Gas OHV,2.8L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD 1 Per Vehicle

Buick Century 3.8L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

Buick Century

3.8L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD 1 Per Vehicle

Buick Century 2.8L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

2.8L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE 1 Per Vehicle

Buick Century 3.8L V6 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

3.8L V6 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE 1 Per Vehicle

Buick Century 2.5L L4 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

2.5L L4 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE 1 Per Vehicle

Buick Century 3.0L V6 Gas OHV,4.3L V6 Diesel OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

Buick Century

3.0L V6 Gas OHV,4.3L V6 Diesel OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE 1 Per Vehicle

Buick Commercial Chassis 5.7L V8 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #21 Except LEADED FUEL EMIS EXPORT (NM8)

Buick Commercial Chassis

5.7L V8 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #21 Except LEADED FUEL EMIS EXPORT (NM8) 1 Per Vehicle

Buick Commercial Chassis 5.0L V8 Gas OHV

1

Upstream

MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #21 Except LEADED FUEL EMIS EXPORT (NM8)

Buick Commercial Chassis

5.0L V8 Gas OHV Upstream MATING CONN USE 12117385 IN EXH MANIFOLD/CROSSOVER)(TYPE #21 Except LEADED FUEL EMIS EXPORT (NM8) 1 Per Vehicle

Buick Century

2.2L L4 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LN2
8th VIN Digit: 4

2.2L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
Eng: LN2
8th VIN Digit: 4

1 Per Vehicle

Buick Century

3.3L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

3.3L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER
8th VIN Digit: N

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV

W/WIRE LEAD)(M18X1.5-6E
MATING CONN USE 12117385
8th VIN Digit: R

2.5L L4 Gas OHV

Upstream W/WIRE LEAD)(M18X1.5-6E
MATING CONN USE 12117385
8th VIN Digit: R

1 Per Vehicle

Buick Century

3.3L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

3.3L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

2.5L L4 Gas OHV,
2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

Buick Century

3.8L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER, W/WIRE LEAD, M18 X 1.5 THD

1 Per Vehicle

Buick Century

2.8L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

2.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

3.8L V6 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

3.8L V6 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

2.5L L4 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

2.5L L4 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Century

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

3.0L V6 Gas OHV,
4.3L V6 Diesel OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #20)(1 WIRE

1 Per Vehicle

Buick Commercial Chassis

5.7L V8 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

5.7L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle

Buick Commercial Chassis

5.0L V8 Gas OHV

MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

5.0L V8 Gas OHV

Upstream MATING CONN USE 12117385
IN EXH MANIFOLD/CROSSOVER)(TYPE #21
Except LEADED FUEL EMIS EXPORT (NM8)

1 Per Vehicle