First Fire Spark Plug FF15

14 mm Thread Dia.; .375" Reach; 13/16" Hex Socket. Superior Fouling Resistance. Replaces Champion: J8, J8C, RJ8, RJ8C, RJ12YC. Replaces NGK: BPR5S, BPR6S. Replaces Autolite: 85, 295, 306, 308, 4275. Item: FF-15 O.E. Replacement Part Number: SP-35 , SP-40 , J8 , J8C , RJ8 , RJ8C , RJ12YC , BPR5S , BPR6S , 85 , 295 , 306 , 308 , 4275 Features Consistent stars, Dependable performance, Superior fouling resistance Replaces Champion J8, J8C, RJ8, RJ8C, RJ12YC Replaces NGK BPR5S, BPR6S Replaces Autolite 85, 295, 306, 308, 4275