Autolite AR94 Spark Plug

Autolite racing spark plugs are the preferred choice for many professionals. They contain an Yttrium-enhanced alloy, which enables up to 8 percent reduction in side wire temperatures for improved durability and less pre-ignition. These replacement spark plugs are available in colder heat ranges than most plug manufacturers to support modified engines. They feature a cut background electrode, which improves ignitibility and faster flame kernel growth. Autolite racing spark plugs have a nickel plated finish for long life and corrosion resistance. They're available in a variety of styles, sizes, and other options--in universal or vehicle-specific applications.
 
Spark Plug Thread Size: 14mm
Spark Plug Reach (in.): 0.708 in.
Spark Plug Reach (mm): 17.98mm
Manufacturer Heat Range: 4
Shorty Spark Plug: No
Resistor: No
Electrode Tip Material: Chromium nickel alloy
Electrode Core Material: Copper
Center Electrode Type: Projected
Spark Plug Seat Style: Tapered
Wrench Diameter: 5/8 in.