Champion QUL77V Spark Plug, (NLA) (NOS)

Champion QUL77V Spark Plug, (NLA) (NOS) Discontinued
Surface Gap
Thread Size: 14mm thread diameter with a 0.5-inch reach.
Hex Size: 13/16 inch (20.65 mm).
Type: Surface-gap ("permagap") plug with built-in resistor (the "Q" prefix denotes suppression for electronic noise).