3 GM AC Delco 42FF Fire Ring Spark Plugs GENERAL MOTORS CORVETTE Genuine

This set of 3 Ac Delco 42FF Fire Ring Spark Plugs is a must-have for any car enthusiast. These spark plugs are exclusively designed for aluminum experimental heads and have a thread diameter of 12mm with a hex size of 13/16. The material used in these spark plugs is oil quench steel/porcelain, which makes them highly durable.
The spark plugs are originally new old stock and have a vintage part, making them a unique addition to your collection. These performance parts are suitable for gasoline fuel type and have an unspecified length warranty. The item length is 3.5 inches, and the manufacturer part number is 42ff, which is an OE/OEM part number for type 42ff. Made in the United States, these spark plugs have a surface finish of original nos and do not have universal fitment.