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1981 Cadillac Fleetwood

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Autolite 646 Spark Plug
for 1981 Cadillac Fleetwood 6.0L V8 Gas OHV

Autolite 646 Spark Plug - 1981 Cadillac Fleetwood Image 1
Autolite 646 Spark Plug - 1981 Cadillac Fleetwood Image 2
Autolite 646 Spark Plug - 1981 Cadillac Fleetwood

Autolite
Brand:Autolite
Part Number: 646
UPC: 009100006462
Weight: 0.15 lbs
Condition:New



On Sale:

$3.66

Availability:
45 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

Get the Autolite 646 Spark Plug for your 1981 Cadillac Fleetwood. Buy now and secure your purchase online!

Autolite Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.

Features and Benefits:

  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.

Specifications:

Center Electrode Core Material:
Copper
Center Electrode Insulator Tip Projection:
0.133 in.
Center Electrode Insulator Tip Projection:
3.38 mm
Center Electrode Projection:
Mid Projection
Center Electrode Tip Material:
Nickel
Core Nose Length:
0.934 in.
Core Nose Length:
23.72 mm
Electrical Terminal Type:
Non-Removable Nut
Grade Type:
Regular
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Ground Electrode Tip Material:
Nickel
Hex Size:
13/16 in.
Hex Type:
Hex
Indexed:
No
Insulator Height:
2.224 in.
Insulator Height:
56.49 mm
Insulator Material:
Ceramic
Manufacturer Heat Range:
8
Pre-Gap Size:
0.05 in.
Pre-Gap Size:
1.27 mm
Reach:
0.75 in.
Reach:
19.05 mm
Resistance:
4000 Ohm
Resistor Type:
Yes
Seat Type:
Flat
Thread Diameter:
14 mm
Washer Included:
Yes
Washer Type:
Flat
ACDelco #:
41-618
ACDelco #:
R44XLS6
ACDelco #:
R45NSX
ACDelco #:
R45XLS6
Accel #:
117
Bosch #:
7522
Bosch #:
7922
Bosch #:
W10EC
Bosch #:
WR10LCV+
Bosch #:
WR10LCV
Champion Spark Plug #:
31
Champion Spark Plug #:
RN14MC5
Champion Spark Plug #:
RN16YC5
Chrysler #:
4686083
DENSO Auto Parts #:
3015
Delphi #:
32721
General Motors #:
25312033
General Motors #:
5613932
General Motors #:
5613946
General Motors #:
5614128
Mopar #:
SP0RN14MC5
Motorcraft #:
AGR52-6
Motorcraft #:
AGS52C-6
Motorcraft #:
AGS52C6
Motorcraft #:
SP451
NGK #:
4012
NGK #:
BP5ES-13
NGK #:
GR45
NGK #:
GR55
Splitfire #:
SF6F6
Country of Origin:
MX

Manufacturer Warranty:

2 Years

Autolite 646 Spark Plug compatibility with your 1981 Cadillac Fleetwood...

Last Updated: 10/05/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1984

 

1983

 

1982

 

1981

 

1980

 

1984

 

1983

 

1982

 

1981

 

1980

 
Cadillac Fleetwood

6.0L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Fleetwood



6.0L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

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