SOLD INDIVIDUALLY. (please note all the autolite have changed to silver plugs, so the body is no longer black)

Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. The copper core increases the rate of heat conduction in the spark plug tip and improves resistance to all types of fouling.

Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
Multi-rib insulator reduces danger of "flash-over"
One-piece terminal post adds strength
Resistor reduces radio frequency interference (RFI) and electrode erosion
Cold-formed steel shell precision rolled threads
Full copper core electrode provides better performance in all conditions

*If you would like the spark plug in black, please use AC Delco R43TS they may also be substituted if AUTOLITE is not available *

BUICK 1981-1992
CADILLAC 1990-1992
CHEVROLET 1970-1993
FORD 1970-1997
GMC 1970-1993
ISUZU 1989-1994
JEEP 1984-1986
MERCURY 1970-1971
OLDSMOBILE 1976-1992
PONTIAC 1971-1992

Center Electrode Core Material Copper
Electrical Terminal Type Stud
Center Electrode Tip Material Nickel
Center Electrode Design Standard / Regular
Ground Electrode Core Material Nickel
Ground Electrode Configuration Single
Ground Electrode Design Tapered
Ground Electrode Tip Material Nickel
Insulator Material Ceramic
Insulator Type Mid
Reach (in) .431"
Resistance 3k - 12k
Gap (Factory Preset) .044" (1.1mm)
Thread Size 14mm X 1.25
Drive Size 5/8" (16mm)
Seat Style Tapered
Resistor Resistor