AUTOLITE part description

Product Description

Autolite 425 Copper Resistor Spark Plug

Features & Benefits

  • One-Piece terminal stud provides a reliable high voltage electrical connection
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • High alumina multi-rib insulator helps prevent flash-over which can lead to misfires
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • Heat-fused glass composite resistor center seal provides high performance EMI noise suppression and a 100 percent leak-proof seal
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Solid copper core center electrode provides optimal thermal and electrical conductivity for better performance in all driving conditions
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • High nickel alloy side electrode resists electrical and chemical wear providing excellent durability
  • 2 year limited warranty

Product Attributes

Resistance 5000 82
Ground Electrode Tip Design Standard
Ground Electrode Core Material Nickel
Electrical Terminal Type Removable Nut
Center Electrode Core Material Copper
Center Electrode Tip Material Nickel
Pre-Gap Size 0.03 IN
Ground Electrode Quantity 1
Hex Size 21 MM
Seat Type Flat
Reach 0.5 IN
Thread Diameter 14 MM
Insulator Material Ceramic
Resistor Type Yes
Ground Electrode Tip Material Nickel
9608 Standard
9805 Short Projection
Washer Included Yes
Grade Type Regular
Hex Size 13/16 IN
Manufacturer Heat Range 8
9459 Yes
9507 Hex
9746 No
Pre-Gap Size 0.7619999999999999 MM
Reach 12.7 MM

Additional Information

Country of Origin (Primary) CN
Harmonized Tariff Code (Schedule B) 8511100000
Warranty Time 2
Warranty Time UOM YR
Harmonized Tariff Code (HTS) 8511100000
UPC 00009100004253
UNSPSC 26101732

Part Interchanges

Fits Vehicles

  • Yamaha LB80 Chappy (1977)
  • Volkswagen 411 (1971)
  • Lotus Eleven (1957)
  • Mercedes-Benz 180 (1953-1957)
  • Dellow MK I (1949-1950)
  • Jaguar Mark IV (1946-1948)
  • Arctic Cat Kitty Cat (1980-1981, 1985-1999)
  • Kawasaki MC1M (1974-1975)
  • Honda MR50 (1974-1975)
  • Yamaha GT1 (1973)
  • Kawasaki MC1 (1973-1975)
  • Yamaha G7S (1972)
  • Kawasaki MT1 (1971-1972, 1974-1975)
  • Yamaha G6S (1970-1971)
  • Skoda Octavia (1960-1967)
  • Wolseley 1500 (1959-1965)
  • Skoda SS450 (1958-1959)
  • Skoda S440 (1958-1959)
  • Skoda S445 (1958-1959)
  • Fairthorpe Atomata (1958-1962)
  • Skoda 1201 (1956-1957)
  • Dellow Mk VI (1956-1959)
  • Dellow MK IIE (1956-1959)
  • Skoda 440 (1956-1957)
  • Alvis TC108/G (1956-1958)
  • Dellow MK III (1952-1955)
  • Dellow MK V (1954-1959)
  • Dellow MK IIC (1951-1957)
  • Alvis TC21/100 (1954-1955)
  • Skoda 1200 (1952-1957)
  • Alvis TC21 (1953-1956)
  • Reliant Regal (1952-1960)
  • Wolseley 6/80 (1949-1954)
  • Wolseley 4/50 (1949-1953)
  • Skoda 1101 (1946-1951)
  • Lea-Francis Fourteen (1950-1954)
  • Alvis TA21 (1950-1953)
  • Skoda 1102 (1946-1951)
  • Riley 1 1/2 Litre (1946-1955)
  • Hotchkiss Gregoire (1950-1954)
  • Jowett Javelin (1950-1954)
  • Humber Pullman (1946-1953)
  • Humber Super Snipe (1946-1953)
  • Humber Imperial (1949-1953)
  • Alvis TB21 (1950-1953)
  • Morgan 4/4 Series III (1960)
  • Morgan 4/4 Series II (1955-1959)
  • Fiat 1900 (1953-1955)
  • Ford Anglia (1946-1959)
  • Saab 92B (1953-1955)
  • Renault Fregate (1953-1954)
  • Saab 92 (1950-1952)
  • Opel Olympia Rekord (1953-1962)
  • Morgan Plus Four (1955-1959)
  • Opel Caravan (1953-1962)
  • Frazer Nash Continental (1956-1957)
  • Ford Taunus (1948-1959)
  • Ford Squire (1956-1960)
  • Ford Escort (1956-1961)
  • Fiat 1400 (1950-1955)
  • Mercedes-Benz 170 S (1950)
  • Mercedes-Benz 170S-V (1954-1955)
  • Mercedes-Benz 170 (1951-1953)
  • Mercedes-Benz 170 V (1950)
  • AC Two-Litre (1947-1958)
  • Opel Olympia (1947-1952)
  • Triumph 2000 (1949)
  • Ford Prefect (1946-1961)
  • Opel Kapitan (1947-1957)
  • Volkswagen Standard (1946-1949)
  • Volkswagen Transporter (1949-1974)
  • Volkswagen Thing (1973-1974)
  • Volkswagen Super Beetle (1971-1980)
  • Volkswagen Squareback (1966-1973)
  • Volkswagen Karmann Ghia (1955-1974)
  • Volkswagen Fastback (1966-1973)
  • Volkswagen Campmobile (1968-1973)
  • Lotus Super Seven (1961-1962)
  • Lotus Seven (1958-1961)
  • Lotus Elite (1961)
  • Jaguar XK120 (1949)
  • Jaguar Mark V (1949-1950)
  • Chevrolet Corvair (1969)
  • Volkswagen Beetle (1950-1979)

Don't know your part number?

Take a photo and we'll identify it!

Recommended Products

More from AUTOLITE (Browse all)