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  2. Auto Parts
  3. Ignition
  4. Secondary Ignition
  5. Spark Plug
  6. Autolite 646

Autolite 646 Spark Plug

Autolite 646 Spark Plug Image 1
Autolite 646 Spark Plug Image 2
Autolite 646 Spark Plug

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



On Sale:

$3.61

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

Product Information

Description:

Get the Autolite 646 Spark Plug for your vehicle. 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

Select a vehicle to narrow Autolite 646 Spark Plug fitment info!

Last Updated: 10/05/2024

Years Vehicle Per Vehicle Fit NotesFitment Notes

1988

 

1987

 

1988

 

1987

 
Buick Skyhawk

2.0L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
8th VIN Digit: K
 

Buick Skyhawk



2.0L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)
8th VIN Digit: K

4 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Calais

8.2L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Calais



8.2L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1984

 

1983

 

1982

 

1981

 

1980

 

1984

 

1983

 

1982

 

1981

 

1980

 
Cadillac Commercial Chassis

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

Cadillac Commercial Chassis



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

8 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac Commercial Chassis

7.0L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Commercial Chassis



7.0L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Commercial Chassis

8.2L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Commercial Chassis



8.2L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac DeVille

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

Cadillac DeVille



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

8 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac DeVille

7.0L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac DeVille



7.0L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac DeVille

8.2L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac DeVille



8.2L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac Eldorado

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

Cadillac Eldorado



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

8 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Cadillac Eldorado

7.0L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Eldorado



7.0L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Eldorado

8.2L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Eldorado



8.2L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

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

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac Fleetwood

7.0L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Fleetwood



7.0L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Fleetwood

8.2L V8 Gas OHV
8
 
Copper Resistor
OE Style
Gap .060 (in)
 

Cadillac Fleetwood



8.2L V8 Gas OHV Copper Resistor
OE Style
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac Seville

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

Cadillac Seville



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

8 Per Vehicle

1996

 

1995

 

1994

 

1993

 

1996

 

1995

 

1994

 

1993

 
Chrysler Concorde

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Concorde



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1995

 

1995

 
Chrysler Concorde

3.3L V6 Flex OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Concorde



3.3L V6 Flex OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

2000

 

2000

 
Chrysler Grand Voyager

3.3L V6 Flex OHV,
3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Chrysler Grand Voyager



3.3L V6 Flex OHV,
3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1993

 

1992

 

1991

 
Chrysler Imperial

3.8L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Imperial



3.8L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1991

 

1990

 

1991

 

1990

 
Chrysler Imperial

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Imperial



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1993

 

1992

 

1991

 
Chrysler New Yorker

3.8L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler New Yorker



3.8L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Chrysler New Yorker

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler New Yorker



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Chrysler Town & Country

3.3L V6 Flex OHV
6
 
Copper Resistor
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Flex OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Chrysler Town & Country

3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 
Chrysler Town & Country

3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Chrysler Town & Country



3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1994

 

1994

 
Chrysler Town & Country

3.8L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Town & Country



3.8L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Chrysler Town & Country

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1990

 

1990

 
Chrysler Town & Country

3.0L V6 Gas SOHC
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Chrysler Town & Country



3.0L V6 Gas SOHC Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

2000

 

2000

 
Chrysler Voyager

3.3L V6 Flex OHV,
3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Chrysler Voyager



3.3L V6 Flex OHV,
3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Dodge Caravan

3.3L V6 Flex OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Caravan



3.3L V6 Flex OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Dodge Caravan

3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Caravan



3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1999

 

1998

 

1997

 

1996

 

1999

 

1998

 

1997

 

1996

 
Dodge Caravan

3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Caravan



3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1995

 

1994

 
Dodge Caravan

3.3L V6 CNG OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Caravan



3.3L V6 CNG OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Dodge Caravan

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Caravan



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Dodge Dynasty

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Dynasty



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Dodge Grand Caravan

3.3L V6 Flex OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 Flex OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Dodge Grand Caravan

3.3L V6 Gas OHV,
3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 Gas OHV,
3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1996

 

1996

 
Dodge Grand Caravan

3.3L V6 CNG OHV
6
 
Copper Resistor
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 CNG OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Dodge Grand Caravan

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1997

 

1996

 

1997

 

1996

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Intrepid



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1995

 

1995

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
8th VIN Digit: T
 

Dodge Intrepid



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)
8th VIN Digit: T

6 Per Vehicle

1994

 

1993

 

1994

 

1993

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Dodge Intrepid



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1997

 

1996

 

1995

 

1994

 

1993

 

1997

 

1996

 

1995

 

1994

 

1993

 
Eagle Vision

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Eagle Vision



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Oldsmobile Firenza

2.0L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
8th VIN Digit: K
 

Oldsmobile Firenza



2.0L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)
8th VIN Digit: K

4 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Plymouth Grand Voyager

3.3L V6 Flex OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 Flex OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Plymouth Grand Voyager

3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1999

 

1998

 

1999

 

1998

 
Plymouth Grand Voyager

3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Grand Voyager



3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1996

 

1996

 
Plymouth Grand Voyager

3.3L V6 CNG OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 CNG OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1995

 

1995

 
Plymouth Grand Voyager

3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Grand Voyager



3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Plymouth Grand Voyager

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1994

 

1994

 
Plymouth Grand Voyager

3.8L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Plymouth Grand Voyager



3.8L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Plymouth Voyager

3.3L V6 Flex OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 Flex OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Plymouth Voyager

3.3L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1999

 

1999

 
Plymouth Voyager

3.8L V6 Gas OHV
6
 
Copper Resistor
Gap .050 (in)
 

Plymouth Voyager



3.8L V6 Gas OHV Copper Resistor
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1995

 

1994

 
Plymouth Voyager

3.3L V6 CNG OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 CNG OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1993

 

1992

 

1991

 

1995

 

1994

 

1993

 

1992

 

1991

 
Plymouth Voyager

3.3L V6 Gas OHV
6
 
Copper Resistor
OE Style
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 Gas OHV Copper Resistor
OE Style
Gap .050 (in)

6 Per Vehicle

1993

 

1993

 
Pontiac LeMans

1.6L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
 

Pontiac LeMans



1.6L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)

4 Per Vehicle

1989

 

1989

 
Pontiac LeMans

2.0L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
 

Pontiac LeMans



2.0L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)

4 Per Vehicle

1989

 

1988

 

1989

 

1988

 
Pontiac LeMans

1.6L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
 

Pontiac LeMans



1.6L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)

4 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Pontiac Sunbird

2.0L L4 Gas SOHC
4
 
Copper Resistor
OE Style
Gap .060 (in)
 

Pontiac Sunbird



2.0L L4 Gas SOHC Copper Resistor
OE Style
Gap .060 (in)

4 Per Vehicle