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ACDelco 334-2121 Alternator

ACDelco 334-2121 Alternator Image 1
ACDelco 334-2121 Alternator Image 2
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ACDelco 334-2121 Alternator Image 4
ACDelco 334-2121 Alternator

ACDelco
Brand:ACDelco
Part Number: 334-2121
UPC: 00707773051832
Weight: 10.58 lbs
Condition:Remanufactured



Core: See Value In Cart
Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

REMAN ALTERNATOR (33)

ACDelco Gold (Professional) Remanufactured Alternators are the high quality alternative to Original Equipment (OE) parts. These alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals. Rotors and stators are electronically tested and then sealed with secondary insulating coating. Remanufacturing alternators is an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ⚠ WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Features and Benefits:

  • Alternators use high-quality bearings with high-temp lubricant and double-lipped rubber seals, reducing friction, vibration, and noise
  • Performance-tested and inspected to ensure they meet your expectations for quality design and component specifications
  • Remanufactured using consistent quality processes; not just rebuilt
  • Remanufacturing is an industry standard practice that returns parts into service rather than scrapping them
  • Rotors and stators are electronically tested and then sealed with secondary insulating coating to help prevent shorts
  • Tested to ensure they perform to ACDelco specifications

Specifications:

Alternator Case Material:
Aluminum
Amperage Rating:
42 Ampere
Country of Origin 10:
JP
Country of Origin 11:
IL
Country of Origin 12:
FR
Country of Origin 13:
PL
Country of Origin 14:
KR
Country of Origin 15:
DK
Country of Origin 16:
DE
Country of Origin 6:
MX
Country of Origin 7:
CA
Country of Origin 8:
BR
Country of Origin 9:
SI
DE to Pulley 1st Groove (mm):
24.0mm
DE to Rotor Shaft End (mm):
29.0
Decoupled Or Clutch Pulley:
No
External Fan Included:
Yes
Family:
Delco
Fan Type:
External
Finish:
Same as OE
Ground Type:
Negative
Mounting Type:
1 Pivot ft
Plug Clock Rear View Main Mounting Ear at 6 O Clock:
3
Pulley Belt Type:
V-belt
Pulley Groove Quantity:
1
Pulley Included:
Yes
Regulator Type:
Internal
Rotation Direction:
Clockwise (Right)
Terminal Connection Quantity:
2
Voltage:
12 VDC
Voltage:
12.0 Volts DC

Features and Benefits:

  • – It is also important that all electrical connections are kept clean and firmly attached, which will make sure the battery is being properly charged by the alternator.
  • – There is a cooling fan in most alternators to keep it from overheating. Making sure that the fan is clean will help the fan and alternator run properly.

Specifications:

Country of Origin:
US

Select a vehicle to narrow ACDelco 334-2121 Alternator fitment info!

Last Updated: 03/10/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes
American Motors Matador

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

American Motors Matador



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Buick Century

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Buick Century



3.8L V6 Gas OHV Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Buick Century

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Buick Century



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Buick Regal

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Buick Regal



3.8L V6 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Blazer

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Blazer



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet C10 Suburban

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet C10 Suburban



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet C20 Suburban

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet C20 Suburban



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Camaro

2.5L L4 Gas OHV
1
 
Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Camaro



2.5L L4 Gas OHV Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Camaro

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
Fuel Sys: CARB
 

Chevrolet Camaro



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
Fuel Sys: CARB

1 Per Vehicle
Chevrolet Caprice

4.1L L6 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Caprice



4.1L L6 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Chevelle

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Chevelle



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet El Camino

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet El Camino



3.8L V6 Gas OHV Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet El Camino

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet El Camino



3.8L V6 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet El Camino

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet El Camino



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G10

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G10



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G10 Van

7.4L V8 Gas,
7.4L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G10 Van



7.4L V8 Gas,
7.4L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G10 Van

5.0L V8 Gas
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G10 Van



5.0L V8 Gas Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G20

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G20



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G20

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G20



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G20

7.4L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G20



7.4L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G20 Van

7.4L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G20 Van



7.4L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G30

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G30



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G30

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G30



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G30

7.4L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G30



7.4L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet G30 Van

7.4L V8 Gas,
7.4L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet G30 Van



7.4L V8 Gas,
7.4L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Impala

4.1L L6 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Impala



4.1L L6 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet K10 Suburban

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet K10 Suburban



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet K20 Suburban

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet K20 Suburban



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet K5 Blazer

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet K5 Blazer



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Chevrolet Laguna

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Chevrolet Laguna



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
GMC Caballero

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

GMC Caballero



3.8L V6 Gas OHV Gold-- (Remanufactured)---
wo/ AC, wo/ Heated Back window
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
GMC Caballero

3.8L V6 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

GMC Caballero



3.8L V6 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
GMC Jimmy

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

GMC Jimmy



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
GMC Jimmy

6.6L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

GMC Jimmy



6.6L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Pontiac Grand Am

5.0L V8 Gas OHV
1
 
Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Pontiac Grand Am



5.0L V8 Gas OHV Gold-- (Remanufactured)---
without Air Conditioning
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle
Pontiac Ventura

2.5L L4 Gas OHV
1
 
Gold-- (Remanufactured)---
wo/ AC, Standard, w/ 42 amp alt.
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42
 

Pontiac Ventura



2.5L L4 Gas OHV Gold-- (Remanufactured)---
wo/ AC, Standard, w/ 42 amp alt.
Unit MFR DE
Remanufactured
Regulator IR
Pulley 1V
Fan EF
Family DE-10SI
Clock 3:00
Amps 42

1 Per Vehicle