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Circulating Pumps

Block mounted circulating pumps must be of the marine type.
Automotive circulating pumps do not have bronze impellers, stainless backing plates
or stainless steel shafts. They will fail in a few months.

Sterndrives.com stocks a very good selection of quality circulation pumps for
GM small block engine and GM big block engines.

The 454 or 7.4L GM Big Block Circulation Pumps are part number 850454--1 for $229.00
(gaskets are included).

The 350 cid, 5.7L, 305 cid, 5.0L GM Small Block Circulation Pumps 850399--1 for $148.00
(gaskets are included).

We also know the scoop for the infamous Mercruiser 470 circulating pump
and what it takes to repair that coolant leaking from the bottom front
of your 470 aluminum block engine.
Click here for more about the 470/3.7L leak issue.

Mercruiser Sterndrive Parts.
Pre-Alpha, R, MR and MC1 Parts
Alpha One Parts
Seal Kits
Alpha One Gimbal (Transom) Parts and Kits
Alpha Gen II Parts
Alpha Gen II Gimbal (Transom) Parts and Kits
Bravo One Parts
Bravo Two Parts
Bravo Three Parts
Bravo Gimbal (Transom) Parts and Kits
TR and TRS Parts
Transom Seal Kits
Gimbal Bearings
Shift Cable Kits
Gear Kits
Shift Interuptor Switch Kits
Anodes and Zinc Kits
Water Pump Kits
Power Trim Pump Kits and Trim System Parts
Decal Sets
Sterndrive Special Tools
Mercruiser shop Manuals
Remote Controls
Trim Sender Switches
Trim Cylinder Assemblies
Mercruiser Engine Parts
Filters and Filter Kits
Tuneup Kits
Carburetor Rebuild Kits
Raw Water Pump Kits
Circulation Water Pumps
Spark Plugs
Spark Plug Wire Kits
Gasket Sets
Exhaust Manifolds
Exhaust Elbows
Exhaust Riser Kits
Exhaust Water Shutter Kits
Ignition Modules and Ignition Coils
Cooling System Parts
Starter Motors
Alternators and Charging Systems
Belts and Belt-Pulley Kits
Drive Couplers
Fuel Pumps (Mechanical and Electric)
Wire Harnesses
Gauges and Instruments
Partial Engine Assemblies
Grease, Lubricants and Adhesives

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