The 1994 Mercruiser 4.3 fuel pump is a marine-specific mechanical pump designed for reliable fuel delivery in boating applications. It ensures consistent fuel pressure to the engine, supporting optimal performance in marine environments. This pump is built to withstand corrosion and harsh conditions typical of marine use.

The 1994 Mercruiser 4.3 fuel pump is a mechanical diaphragm-type pump designed for marine applications. Key specifications include:

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

Grade: Meets OEM marine standards for durability and corrosion resistance.

Viscosity: Compatible with fuels ranging from 10W-30 to 20W-50 engine oil viscosity.

Buoyancy: Not applicable (non-floating design).

Material: Housing is typically made of cast aluminum or stainless steel, with a nitrile or Viton diaphragm for fuel resistance.

Pressure Rating: Operates at 4-7 psi, suitable for carbureted engines.

Flow Rate: Approximately 30-35 gallons per hour (GPH).

Mounting: Bolt-on design, compatible with Mercruiser 4.3L V6 engines.

Compatibility: Works with gasoline (ethanol blends up to E10).