Autolite AP666 - Autolite AP666 Platinum Spark Plug
$1268
Package Price for 4 Units
@ $3.17 per unit
In stock
limited availability at this price!
Pay over 3-12 months with
. Learn more
AUTOLITE part description
Product Description
Autolite AP666 Platinum Spark Plug
Features & Benefits
- Full platinum firing tip assures virtually no gap erosion and fewer misfires for a longer plug life
- Engineered with a platinum firing tip that prevents gap erosion for longer service life.
- Manufactured with a center wire platinum firing tip for improved performance and durability
- Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- High nickel alloy side electrode resists electrical and chemical wear to maintain a precise gap for a longer lasting plug
- The multi-rib insulator prevents flash-over.
- Super conductive yttrium enhanced ground electrode provides superior heat transfer
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
- Leak proof, heat fused resistor for added stability
- 4 year limited warranty
- Necked-down center electrode fires quicker and cleaner with less voltage for easier starts, quicker acceleration, and improved fuel economy
Product Attributes
Resistance | 4000 82 |
Ground Electrode Tip Design | Standard |
Ground Electrode Core Material | Nickel |
Electrical Terminal Type | Non-Removable Nut |
Center Electrode Core Material | Copper |
Center Electrode Tip Material | Platinum |
Pre-Gap Size | 0.06 IN |
Ground Electrode Quantity | 1 |
Hex Size | 16 MM |
Seat Type | Tapered |
Reach | 0.431 IN |
Thread Diameter | 14 MM |
Insulator Material | Ceramic |
Resistor Type | Yes |
Ground Electrode Tip Material | Nickel |
9608 | Standard |
9805 | Mid Projection |
Washer Included | No |
Grade Type | Performance |
Hex Size | 5/8 IN |
Manufacturer Heat Range | 7 |
9459 | No |
9507 | Hex |
9746 | No |
Pre-Gap Size | 1.5239999999999998 MM |
Reach | 10.9474 MM |
Additional Information
Country of Origin (Primary) | MX |
Harmonized Tariff Code (Schedule B) | 8511100000 |
Warranty Time | 4 |
Warranty Time UOM | YR |
Harmonized Tariff Code (HTS) | 8511100000 |
UPC | 00009100252562 |
UNSPSC | 26101732 |
Part Interchanges
- Champion Spark Plug 37
- DENSO Auto Parts 5021
- Motorcraft ARF32-6
- NGK 2248
- ACDelco R43CTS6
- Bosch HR9BPY+
- Bosch HR9BPY
- Bosch HR9BPZ+
- Motorcraft ARF32C6
- Motorcraft ARF42-6
- Motorcraft ARF52-6
- Motorcraft ARF52-8
- Motorcraft ARF62-6
- Motorcraft ASF32C-6
- Motorcraft ASF32C6
- Motorcraft ASF42-6
- Motorcraft ASF42C-7
- Motorcraft ASF42C7
- Motorcraft ASF52-6
- Motorcraft ASF52C-7
- Motorcraft ASF52C7
- Motorcraft SP443
- NGK UR45GP
- NGK UR45VX
- NGK UR55VX
- ACDelco R43TS6
- Bosch HR9BPY
- Bosch HR9BPY+
AUTOLITE AP666 Cross Reference
We have 21 alternatives for the AP666 by AUTOLITE:
Fits Vehicles
- Jeep DJ5 (1980-1983)
- Pontiac Laurentian (1976-1977, 1980-1981)
- American Motors Spirit (1980-1982)
- American Motors Eagle (1981-1983)
- American Motors Concord (1980-1982)
- Mercury Zephyr (1978-1979)
- Mercury Monarch (1977-1979)
- Mercury Marquis (1977, 1979)
- Mercury Cougar (1977-1979)
- Mercury Comet (1977)
- Mercury Grand Marquis (1977, 1979)
- Mercury Capri (1979)
- Lincoln Versailles (1977-1979)
- Lincoln Mark V (1977)
- Lincoln Continental (1977)
- Ford Thunderbird (1977-1979)
- Ford Mustang II (1977-1978)
- Ford Mustang (1979)
- Ford Maverick (1977)
- Ford LTD II (1977-1979)
- Ford Granada (1977-1979)
- Ford Fairmont (1978-1979)
- Ford Custom 500 (1977)
- Ford LTD (1977-1979)
- Pontiac Ventura (1975-1977)
- Pontiac Sunbird (1977-1980)
- Pontiac Phoenix (1977-1984)
- Pontiac Parisienne (1976-1977, 1980-1985)
- Pontiac LeMans (1975-1977, 1979-1981)
- Pontiac Grandville (1975)
- Pontiac Grand Safari (1975-1978)
- Pontiac Grand Prix (1975-1987)
- Pontiac Grand LeMans (1975-1977, 1979-1983)
- Pontiac Grand Am (1975, 1979-1980, 1985-1991)
- Pontiac Firebird (1975-1986)
- Pontiac Fiero (1984-1988)
- Pontiac Catalina (1975-1981)
- Pontiac Bonneville (1975-1986)
- Pontiac Astre (1975, 1977)
- Pontiac 6000 (1982-1991)
- Oldsmobile Toronado (1981-1984)
- Oldsmobile Starfire (1977-1980)
- Oldsmobile Omega (1975-1984)
- Oldsmobile Delta 88 (1975, 1977-1985)
- Oldsmobile Cutlass Supreme (1977-1987)
- Oldsmobile Cutlass Cruiser (1980-1983, 1987-1992)
- Oldsmobile Cutlass Ciera (1982-1992)
- Oldsmobile Cutlass Calais (1978-1984, 1988-1991)
- Oldsmobile Cutlass Salon (1978-1980, 1985-1987)
- Oldsmobile Cutlass (1977-1981)
- Oldsmobile Custom Cruiser (1975)
- Oldsmobile Calais (1985-1987)
- Oldsmobile 98 (1975, 1981-1983, 1985)
- GMC Safari (1985-1990)
- GMC Sonoma (1991-1993)
- GMC S15 (1985-1990)
- GMC S15 Jimmy (1985-1988)
- GMC Caballero (1978-1984)
- Chevrolet S10 (1985-1993)
- Chevrolet S10 Blazer (1985-1988)
- Chevrolet Monza (1976, 1978-1980)
- Chevrolet Monte Carlo (1978-1987)
- Chevrolet Malibu (1978-1983)
- Chevrolet Lumina (1990-1992)
- Chevrolet LLV (1987-1993)
- Chevrolet Impala (1980-1985)
- Chevrolet El Camino (1978-1984)
- Chevrolet Citation II (1984-1985)
- Chevrolet Citation (1980-1983)
- Chevrolet Celebrity (1982-1990)
- Chevrolet Caprice (1980-1985)
- Chevrolet Camaro (1980-1986)
- Chevrolet Astro (1985-1990)
- Cadillac Seville (1981-1982)
- Cadillac Fleetwood (1980-1982)
- Cadillac Eldorado (1981-1982)
- Cadillac DeVille (1980-1982)
- Buick Somerset Regal (1985)
- Buick Somerset (1986-1987)
- Buick Skylark (1975-1991)
- Buick Skyhawk (1977-1980)
- Buick Riviera (1975-1979, 1981-1984)
- Buick Regal (1975-1987)
- Buick LeSabre (1975-1985)
- Buick Estate Wagon (1975-1976, 1978-1980)
- Buick Electra (1975-1985)
- Buick Century (1975-1992)
- Buick Apollo (1975)
- Jeep Scrambler (1981-1983)
- Jeep CJ7 (1980-1983)
- Jeep CJ5 (1980-1983)

Don't know your part number?
Take a photo and we'll identify it!