Description
Get Your Volvo Penta Back on the Water
Hard starting after sitting, stalling under load, or a whining noise from the engine bay — these are classic signs your Volvo Penta's electric fuel pump is failing. Our direct replacement fuel pump assembly restores proper fuel pressure and delivery to your 4.3L, 5.0L, or 5.7L Volvo Penta marine engine. Plug-and-play replacement — no modifications needed.
Symptoms of a Failing Marine Fuel Pump
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Long crank before starting — Pump can't build pressure quickly after sitting
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Engine dies under load — Fuel starvation at higher RPM when demand is greatest
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Whining or buzzing noise — Pump motor bearings wearing out
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Vapor lock issues — Hot restart problems, common with marine engines in enclosed bilges
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Low fuel pressure — Pressure gauge reads below spec at the fuel rail
Compatibility
| Engine Series |
Displacement |
Models |
| Volvo Penta 4.3L |
4.3L V6 |
4.3GL, 4.3Gi, 4.3GXi, 4.3OSi |
| Volvo Penta 5.0L |
5.0L V8 |
5.0GL, 5.0Gi, 5.0GXi, 5.0OSi |
| Volvo Penta 5.7L |
5.7L V8 |
5.7GL, 5.7Gi, 5.7GXi, 5.7OSi |
Replaces OEM Part Numbers: 21608511, 21545142, 3855104, 3858267
Specifications
| Specification |
Detail |
| Type |
Electric in-line fuel pump — complete assembly with mounting bracket |
| Voltage |
12V DC |
| Pressure Rating |
Meets OEM specification for MPI/TBI fuel systems |
| Connector |
Plug-and-play OEM-style electrical connector |
| Includes |
Pump assembly, mounting bracket, inlet/outlet fittings, gasket |
| Marine Safety |
USCG-compliant ignition-protected design |
Installation Tips
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Safety first — Disconnect battery, run blower for 5 minutes, no open flames
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Relieve fuel pressure — At the Schrader valve on the fuel rail
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Remove old pump — Disconnect electrical connector, fuel lines, mounting bolts
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Install new pump — Mount in same orientation, connect lines with new gasket
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Prime and test — Cycle key 2-3 times to prime, check for leaks before starting
Why Choose iFJF?
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Exact OEM replacement — Same form factor, mounting points, and electrical connector
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Marine-rated — Ignition-protected design meets USCG requirements for enclosed engine compartments
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Complete assembly — Pump, bracket, and fittings — everything you need in one box
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Tested pressure output — Each pump is pressure-tested before shipping
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Fast DIY fix — Typical installation in 30-45 minutes
Replacement Pump Unit Available Separately
Only the pump needs replacing? The iFJF low pressure electric fuel pump (21608511) is the pump unit inside this assembly and is available separately — ideal as a spare to keep onboard or when the pump body is the only failing part.
Frequently Asked Questions
Q: Will this fit my Volvo Penta 5.0Gi?
A: Yes. This pump assembly fits all 4.3L, 5.0L, and 5.7L Volvo Penta GL, Gi, GXi, and OSi series engines that use the electric in-line fuel pump.
Q: Is this pump marine-rated?
A: Absolutely. Marine fuel pumps must be ignition-protected to prevent sparks in an enclosed bilge environment. This pump meets USCG 33 CFR 183.410 requirements for marine use.
Q: Does this come with the gasket?
A: Yes — a new mounting gasket is included with the pump assembly.
Q: How long does a marine fuel pump typically last?
A: Marine fuel pumps typically last 500-1,000 hours depending on fuel quality and usage. Ethanol-blended fuel significantly shortens pump life. If you're experiencing symptoms, it's likely time for replacement.
Q: Can I install this with the boat in the water?
A: We strongly recommend doing fuel system work on land or with the boat hauled out. If you must do it on the water, ensure excellent ventilation, run the blower, and have a fire extinguisher ready. Fuel vapors in a bilge are extremely dangerous.
