Pistons (7.3:1 Compression ratio)

Cars for North America, Canada, Japan and California were fitted with 7.3 to 1 compression ratio pistons, part number UE39154 (A Bank) and UE39156 (B Bank). Cars for the rest of the world were fitted with 9 to 1 ratio pistons.

S grade is the same as H & J grade   |   T grade is the same as K & L grade   |   X grade is the same as M grade