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  2. Auto Parts
  3. Ignition
  4. Secondary Ignition
  5. Spark Plug
  6. Autolite XP646

Autolite XP646 Spark Plug

Autolite XP646 Spark Plug Image 1
Autolite XP646 Spark Plug Image 2
Autolite XP646 Spark Plug

Autolite
Brand:Autolite
Part Number: XP646
UPC: 009100044648
Weight: 0.15 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the Autolite XP646 Spark Plug for your vehicle. Buy now and secure your purchase online!

Autolite Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.

Features and Benefits:

  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Engineered with an Iridium-enhanced center electrode and fine-wire design that increases ignitability and provides a more focused ignition for improved engine performance.
  • Includes a lifetime limited warranty that guarantees optimum performance equal to OE designed plugs.
  • Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.
  • Its proprietary platinum ground electrode provides increased durability* and resistance to wear, extending the life of the plug.
  • The tapered ground wire improves engine ignitability.

Specifications:

Center Electrode Core Material:
Copper
Center Electrode Design:
Fine Wire
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:
Iridium
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:
Taper Cut
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
Champion Spark Plug #:
2105
NGK #:
7214
NGK #:
GR5IX
Country of Origin:
MX

Select a vehicle to narrow Autolite XP646 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
 
Iridium XP
Gap .060 (in)
8th VIN Digit: K
 

Buick Skyhawk



2.0L L4 Gas SOHC Iridium XP
Gap .060 (in)
8th VIN Digit: K

4 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Calais

8.2L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Calais



8.2L V8 Gas OHV Iridium XP
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
 
Iridium XP
Gap .060 (in)
 

Cadillac Commercial Chassis



6.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac Commercial Chassis

7.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Commercial Chassis



7.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Commercial Chassis

8.2L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Commercial Chassis



8.2L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac DeVille

6.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac DeVille



6.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac DeVille

7.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac DeVille



7.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac DeVille

8.2L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac DeVille



8.2L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac Eldorado

6.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Eldorado



6.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1978

 

1977

 

1978

 

1977

 
Cadillac Eldorado

7.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Eldorado



7.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Eldorado

8.2L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Eldorado



8.2L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1984

 

1983

 

1982

 

1981

 

1980

 

1984

 

1983

 

1982

 

1981

 

1980

 
Cadillac Fleetwood

6.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Fleetwood



6.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1979

 

1978

 

1977

 

1979

 

1978

 

1977

 
Cadillac Fleetwood

7.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Fleetwood



7.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1976

 

1975

 

1976

 

1975

 
Cadillac Fleetwood

8.2L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Fleetwood



8.2L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1981

 

1980

 

1981

 

1980

 
Cadillac Seville

6.0L V8 Gas OHV
8
 
Iridium XP
Gap .060 (in)
 

Cadillac Seville



6.0L V8 Gas OHV Iridium XP
Gap .060 (in)

8 Per Vehicle

1996

 

1995

 

1994

 

1993

 

1996

 

1995

 

1994

 

1993

 
Chrysler Concorde

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Concorde



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1995

 

1995

 
Chrysler Concorde

3.3L V6 Flex OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Concorde



3.3L V6 Flex OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

2000

 
Chrysler Grand Voyager

3.3L V6 Flex OHV,
3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Grand Voyager



3.3L V6 Flex OHV,
3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1993

 

1992

 

1991

 
Chrysler Imperial

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Imperial



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1991

 

1990

 

1991

 

1990

 
Chrysler Imperial

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Imperial



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1993

 

1992

 

1991

 
Chrysler New Yorker

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler New Yorker



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Chrysler New Yorker

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler New Yorker



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Chrysler Town & Country

3.3L V6 Flex OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Flex OHV Iridium XP
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
 
Iridium XP
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 
Chrysler Town & Country

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Town & Country



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Chrysler Town & Country

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Town & Country



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1990

 

1990

 
Chrysler Town & Country

3.0L V6 Gas SOHC
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Town & Country



3.0L V6 Gas SOHC Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

2000

 
Chrysler Voyager

3.3L V6 Flex OHV,
3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Chrysler Voyager



3.3L V6 Flex OHV,
3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Dodge Caravan

3.3L V6 Flex OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Caravan



3.3L V6 Flex OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Dodge Caravan

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Caravan



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1999

 

1998

 

1997

 

1996

 

1999

 

1998

 

1997

 

1996

 
Dodge Caravan

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Caravan



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1995

 

1994

 
Dodge Caravan

3.3L V6 CNG OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Caravan



3.3L V6 CNG OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1992

 

1991

 

1990

 

1993

 

1992

 

1991

 

1990

 
Dodge Dynasty

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Dynasty



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Dodge Grand Caravan

3.3L V6 Flex OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 Flex OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

2000

 

1999

 

1998

 

1997

 

1996

 
Dodge Grand Caravan

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Grand Caravan



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Dodge Grand Caravan

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1996

 

1996

 
Dodge Grand Caravan

3.3L V6 CNG OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Grand Caravan



3.3L V6 CNG OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1997

 

1996

 

1997

 

1996

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Intrepid



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1995

 

1995

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
8th VIN Digit: T
 

Dodge Intrepid



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)
8th VIN Digit: T

6 Per Vehicle

1994

 

1993

 

1994

 

1993

 
Dodge Intrepid

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Dodge Intrepid



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1997

 

1996

 

1995

 

1994

 

1993

 

1997

 

1996

 

1995

 

1994

 

1993

 
Eagle Vision

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Eagle Vision



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Oldsmobile Firenza

2.0L L4 Gas SOHC
4
 
Iridium XP
Gap .060 (in)
8th VIN Digit: K
 

Oldsmobile Firenza



2.0L L4 Gas SOHC Iridium XP
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
 
Iridium XP
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 Flex OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

1990

 
Plymouth Grand Voyager

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1999

 

1998

 

1999

 

1998

 
Plymouth Grand Voyager

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Grand Voyager



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1996

 

1996

 
Plymouth Grand Voyager

3.3L V6 CNG OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Grand Voyager



3.3L V6 CNG OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1995

 

1994

 
Plymouth Grand Voyager

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Grand Voyager



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

2000

 

1999

 

1998

 
Plymouth Voyager

3.3L V6 Flex OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 Flex OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 

2000

 

1999

 

1998

 

1997

 

1996

 

1995

 

1994

 

1993

 

1992

 

1991

 
Plymouth Voyager

3.3L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1999

 

1999

 
Plymouth Voyager

3.8L V6 Gas OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Voyager



3.8L V6 Gas OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1995

 

1994

 

1995

 

1994

 
Plymouth Voyager

3.3L V6 CNG OHV
6
 
Iridium XP
Gap .050 (in)
 

Plymouth Voyager



3.3L V6 CNG OHV Iridium XP
Gap .050 (in)

6 Per Vehicle

1993

 

1993

 
Pontiac LeMans

1.6L L4 Gas SOHC
4
 
Iridium XP
Gap .060 (in)
 

Pontiac LeMans



1.6L L4 Gas SOHC Iridium XP
Gap .060 (in)

4 Per Vehicle

1989

 

1989

 
Pontiac LeMans

2.0L L4 Gas SOHC
4
 
Iridium XP
Gap .060 (in)
 

Pontiac LeMans



2.0L L4 Gas SOHC Iridium XP
Gap .060 (in)

4 Per Vehicle

1989

 

1988

 

1989

 

1988

 
Pontiac LeMans

1.6L L4 Gas SOHC
4
 
Iridium XP
Gap .060 (in)
 

Pontiac LeMans



1.6L L4 Gas SOHC Iridium XP
Gap .060 (in)

4 Per Vehicle

1988

 

1987

 

1988

 

1987

 
Pontiac Sunbird

2.0L L4 Gas SOHC
4
 
Iridium XP
Gap .060 (in)
 

Pontiac Sunbird



2.0L L4 Gas SOHC Iridium XP
Gap .060 (in)

4 Per Vehicle