MARINE FUEL PUMPThis marine mechanical fuel pump has a polished zinc plated finish and delivers 130 GPH free flow at 9 PSI. Large 1/2" NPT threaded inlet/outlet ports. 1/4" tube for flame arrestor or carburetor. Meets marine USCG specifications. Fits Chevrolet 396, 402, 427 and 454 V8 engines.