CARMOCAR Electric Fuel Pump Assembly for Volvo Penta 4.3L/5.0L/5.7L - Dual Pump with Reservoir, Direct-Fit OEM Replacement

The CARMOCAR Electric Fuel Pump Assembly is a direct-fit replacement for select Volvo Penta 4.3L, 5.0L and 5.7L engines, combining dual pumps and an integrated reservoir to restore reliable fuel delivery.

If your inboard or sterndrive engine is showing hesitation, low performance, or inconsistent fuel pressure, the fuel pump module is a common culprit. This CARMOCAR assembly is built to match OEM fit and function for multiple Volvo Penta part numbers, so you can swap it in without major modifications. It includes two pumps within a single housing and a reservoir to maintain steady pressure under load—an important design for marine applications where operating angles and vibration differ from cars.

Which Volvo Penta models and part numbers does this replace?

This assembly is engineered as a replacement for a range of Volvo Penta gasoline engines and several OEM references. Check compatibility by comparing your current part number or engine model before purchasing to ensure fitment.

• Compatible engines: 4.3L, 5.0L, 5.7L gasoline models (OSI, GXI, GI, OSXI variants).
• Interchangeable OEM numbers: 21608511, 21545138, 21397771, 3594444, 3861355, 3860210, 23306461.
• Designed for Volvo Penta sterndrive and inboard installations of the listed displacements.

How does the dual-pump design help marine engine performance?

The two-pump arrangement plus reservoir reduces the risk of fuel starvation during acceleration, tight turns, or rough water. One pump maintains baseline pressure while the second provides extra flow when demand spikes, keeping fuel supply consistent and helping the engine run smoothly.

• Dual pumps: continuous baseline flow plus on-demand boost for high RPM or load.
• Reservoir: keeps a small fuel supply near the pumps to prevent vapor lock or starvation.
• Stable pressure: improves throttle response and engine consistency in marine conditions.

What should I expect during installation and fitment?

Installation mirrors the OEM module swap, typically requiring removal of the old assembly from the tank or module housing and replacement with the CARMOCAR unit. Basic mechanical skills and standard tools are usually sufficient; consult service manuals or a marine mechanic for tank-access procedures.

• Direct-fit design for listed Volvo Penta part numbers—no drilling or housing mods expected.
• Electrical and fuel line connections match OEM locations; verify connector types before installation.
• Follow safety best practices: disconnect battery, relieve fuel system pressure, and work in a ventilated area.

What quality and support can I expect from CARMOCAR?

This product is produced to replace worn OEM modules and restore expected fuel delivery characteristics. CARMOCAR provides a one-year customer service period and recommends verifying OEM numbers against your existing module before ordering. Support is available for fitment questions or issues that arise after purchase.

• Manufactured for marine fuel handling and compatibility with gasoline sterndrive systems.
• One-year customer service period with responsive support for installation or performance questions.
• Advice: compare photographs and OEM numbers to ensure a correct match before installation.

Who is this for: Boat owners, marine mechanics, and fleet operators running Volvo Penta 4.3L, 5.0L or 5.7L gasoline engines who need a straightforward, OEM-interchange fuel pump module. Choose this assembly if you want a plug-compatible replacement that addresses intermittent fuel pressure, hesitation under load, or a failing pump—while keeping installation close to the original configuration.