Engineered Marine Products Circulating Water Pump 95-03599, Replaces 382218, for GM V-6 and Small Block V-8 Engines

This Engineered Marine Products circulating water pump (part number 95-03599) is a bi-directional replacement pump built for GM V-6 and small block V-8 marine engines. It draws raw water through the engine's cooling circuit to keep operating temperatures in check, and because it is bi-directional it can be installed without regard to engine rotation direction, simplifying the swap for installers working on different GM-based inboard and sterndrive setups. The pump ships with the correct mounting gasket (18-0981) already included, so there is no need to source a separate gasket kit before installation. Its housing has a machined exterior finish for a precise fit against the engine block and consistent sealing surface. At 12 x 6 x 6 inches and 10.727 pounds, it matches the dimensional footprint of the OEM circulating pump it replaces, allowing for a direct swap using existing mounting hardware and coolant lines. This pump is cross-referenced to several OEM and aftermarket circulating pump numbers, making it a straightforward replacement for GM V-6 and small block V-8 engines that use one of those original part numbers. Whether you are restoring an aging cooling system or replacing a pump that has started to leak or seize, this unit is manufactured to provide reliable, consistent water circulation for GM V-6 and small block V-8 marine applications.

Specifications

• Brand: Engineered Marine Products
• Manufacturer Part Number: 95-03599
• Product Dimensions: 12 x 6 x 6 inches
• Weight: 10.727 pounds
• Finish: Machined
• Design: Bi-Directional
• Included Gasket: 18-0981
• Engine Fitment: GM V-6 and small block V-8 engines
• OEM Cross Reference: 382218, 980477, 985429, 3853850
• UPC: 840080418254

Fitment

• GM V-6 engines
• GM small block V-8 engines

Replaces (OEM)

• 382218
• 980477
• 985429
• 3853850

Frequently Asked Questions

What engines does the 95-03599 circulating water pump fit? The Engineered Marine Products circulating water pump 95-03599 is built for GM V-6 and small block V-8 marine engines.

Is this pump bi-directional? Yes, the 95-03599 circulating water pump is bi-directional, so it can be installed regardless of the engine's rotation direction.

Which OEM part numbers does 95-03599 replace? This pump cross-references to OEM and aftermarket numbers 382218, 980477, 985429, and 3853850.

Does the pump come with a gasket? A mounting gasket, part number 18-0981, is included with the 95-03599 circulating water pump, so no separate gasket purchase is needed.

What are the dimensions and weight of this water pump? The 95-03599 circulating water pump measures 12 x 6 x 6 inches and weighs 10.727 pounds.

What is the housing finish on this pump? The 95-03599 pump has a machined exterior finish for a precise fit against the engine block.

Will this pump fit engines that originally used part number 980477? Yes, part number 980477 is one of the OEM numbers the Engineered Marine Products 95-03599 circulating water pump replaces.

Is 95-03599 a genuine Engineered Marine Products part or a generic aftermarket copy? It is manufactured by Engineered Marine Products and sold under their own part number, 95-03599, rather than a repackaged generic pump.

What should I check before ordering this pump for my engine? Confirm your GM engine is a V-6 or small block V-8 and that your original pump matches one of the cross-reference numbers 382218, 980477, 985429, or 3853850 before ordering the 95-03599.

Do I need any additional parts to install this pump? No additional gasket is required since the 95-03599 circulating water pump ships with gasket 18-0981 included.

How is this pump mounted? The 95-03599 circulating water pump uses the included 18-0981 gasket at the mounting surface and installs using the engine's existing mounting hardware and coolant line connections.