Pistons (7.3:1 Compression Ratio)

From VIN 20755 to 41648 North American spec models were fitted with 7.3 to 1 compression ratio pistons, with part numbers UE39154 (A Bank) and UE39156 (B bank) stamped on the pistons.

Cars to North America including Canada, California & Japan from VIN 30001 were also fitted with 7.3:1 CR pistons.

S grade is equivalent to H & J grade   |   T grade isequivalent to K & L grade   |   X grade is equivalent to M & N grade