Piston rings diameter 120.62mm CATERPILLAR 3304 3306 BROYT INGERSOLL RAND STEIGER COUGAR STD Piston rings used in CATERPILLAR 7.0 engines - kpl. 1cyl. PARAMETERS diameter: 120.62mm 3Tx3Tx3.15 capacity: 7.0L 4cyl. ENGINES CATERPILLAR 3304 3304DI CATERPILLAR 3306 3306DI MODELS CATERPILLAR 100, 200, 300, 500, 600, 800, 900, CP, CS, D, G, H Challenger BROYT X INGERSOLL RAND ECM, HP, VHP, XHP, XP STEIGER COUGAR