Double Platinum Spark Plug Autolite APP646

Double Platinum Spark Plug Autolite APP646

Double Platinum spark plugs have a platinum-to-platinum design that decreases gap erosion, reduces misfires, and provides improved durability*, leading to longer service life. It provides superior performance over copper and platinum plugs primarily used in distributorless ignition system (DIS) engines.

Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
The multi-rib insulator prevents flash-over.

Center Electrode Design: Standard
Center Electrode Tip Material (Inch): Platinum
Ground Electrode Tip Design: Not Tapered
Ground Electrode Tip Material: Platinum
Hex Size (Inch): 13/16
Thread Diameter (Millimeter): 14
Reach (Inch): 0.75
Seat Type: Gasket
Pre-Gap Size (Inch): 0.05
Manufacturer Heat Range: 8
Resistance (Ohm): 4000
Center Electrode Projection: Mid Projection
Terminal Type: Non Removable Nut