Fuel Pump for Mercruiser GM Big Block V8 Mounts on Raw Water Pump 861677T

Fuel Pump that mounts on the raw water pump on Mercruiser GM big block V8 7.4 454 and 8.2 502 standard horsepower engines.

When GM changed the design of the 454 engine in 1991, they called it a Generation 5 engine. GM did away with the provision for mounting a mechanical fuel pump on the engine block.

Most companies changed to electric fuel pumps, but Mercruiser made a special raw water pump to accept a mechanical fuel pump and used this on engines from 1991 to 1995

This Pump has 1/4 NPT ports and fits on the raw water pump on Mercruiser Generation 5 Engines. 1991-1995.

Not for HP engines.