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1979 Cadillac DeVille

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Autolite APP646 Spark Plug
for 1979 Cadillac DeVille 7.0L V8 Gas OHV

Autolite APP646 Spark Plug - 1979 Cadillac DeVille Image 1
Autolite APP646 Spark Plug - 1979 Cadillac DeVille Image 2
Autolite APP646 Spark Plug - 1979 Cadillac DeVille

Autolite
Brand:Autolite
Part Number: APP646
UPC: 009100005397
Weight: 0.15 lbs
Condition:New



On Sale:

$8.81

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

Product Information

Description:

Get the Autolite APP646 Spark Plug for your 1979 Cadillac DeVille. Buy now and secure your purchase online!

Autolite Double Platinum spark plugs have a platinum-to-platinum design that decreases gap erosion, reduces misfires, and provides improved durability*, leading to longer service life. It provides superior performance over copper and platinum plugs primarily used in distributorless ignition system (DIS) engines.

Features and Benefits:

  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.

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:
Platinum
Core Nose Length:
0.934 in.
Core Nose Length:
23.72 mm
Electrical Terminal Type:
Non-Removable Nut
Grade Type:
Performance
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Ground Electrode Tip Material:
Platinum
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:
Crush
ACDelco #:
41-819
Champion Spark Plug #:
31
Champion Spark Plug #:
RN14PMP5
Champion Spark Plug #:
RN14PYP
Chrysler #:
4727114
Mopar #:
SPRN14PMP5
Country of Origin:
MX

Manufacturer Warranty:

5 Years

Autolite APP646 Spark Plug compatibility with your 1979 Cadillac DeVille...

Last Updated: 10/05/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac DeVille

7.0L V8 Gas OHV
8
 
Double Platinum
Gap .060 (in)
 

Cadillac DeVille



7.0L V8 Gas OHV Double Platinum
Gap .060 (in)

8 Per Vehicle

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