47-3577 WATER PUMP F/GM 409-502 CID (SIE 3577)

Marine Water Circulating Pump for early model Chevy Big Block V-8 454 CID, 7.4L Engines using a stamped steel timing cover.

Features ...
* Brass Bi-directional impeller.
* All mounting hubs checked for proper roll-out.
* All new pump body castings, not rebuilt units.
* Produced domestically at Sierra's Clearwater, Florida facility.
* Stainless steel backing plate and attaching hardware.
* All pumps are vacuum tested to insure proper operation.