Find Input Part OEM number or machinery model MARINE TRANSMISSION Select model MARINE TRANSMISSION Caterpillar parts: For full view, you need register 7211 MARINE TRANSMISSION 7211 1YB (1985) 7211 66X (1979) 7221 MARINE TRANSMISSION 7221 1ZB (1985) 7221 98X (1978) 7231 MARINE TRANSMISSION 7231 17W (1975) 7241 MARINE TRANSMISSION 7241 39E (1970) 7251 MARINE TRANSMISSION 7251 4GB (1986) 7261 MARINE TRANSMISSION 7261 6LB (1984) 7261 89B (1974) 7271 MARINE TRANSMISSION 7271 2PB (1986) 7271 36W (1980) C8.7 MARINE TRANSMISSION C8.7 6P7 (2017) online parts diagram catalog Search for genuine and aftemarket cat parts.