The 1989 Mercruiser 3.0 fuel pump is a mechanical marine pump designed for inboard engines. It delivers fuel from the tank to the carburetor at consistent pressure. This OEM pump is durable and built to withstand marine conditions.

The 1989 Mercruiser 3.0 fuel pump is a mechanical diaphragm-type pump with the following specifications:

Size: Approximately 4.5 inches in diameter and 3 inches in height.

Grade: Designed for marine gasoline engines (87-93 octane).

Viscosity: Compatible with fuels meeting ASTM D4814 standards.

Buoyancy: Not applicable (non-submersible design).

Material: Housing made of corrosion-resistant aluminum or zinc alloy; diaphragm typically nitrile rubber or similar fuel-resistant elastomer.

Pressure Output: 4-6 psi (pounds per square inch).

Flow Rate: ~30 gallons per hour (GPH).

Mounting: Bolt-on, engine-mounted with gasket seal.

Connections: Inlet/outlet ports for 5/16" or 3/8" fuel lines.

Compatibility: OEM part number 807223A2 or equivalent aftermarket replacements.