Spark Plug Champion J12YC Model Number: 21672

Model Number: 21672

and precision alignment work — delivers hard strikes with zero rebound

Progressive Pitch: Smaller teeth near the shank and larger teeth at the tip for smoother starts and faster cuts

mild contours

Spark Plug Champion J12YC Model Number: 21672The Champion J12YC Spark Plug is a Copper Plus spark plug known for its durability and reliable performance, especially in small engines and older vehicles. Here are the key specifications: Thread Size: 14mm Thread Reach: 0. 375 inch Hex Size: 13 16 inch (20mm) Heat Range: 12 Seat Type: Gasket Preset Gap: 0. 035 inch (0. 89mm) Center Electrode Tip Material: Nickel Copper Alloy Ground Electrode Tip Material: Nickel Design: Standard with copper core