PCM Modular Returnless Fuel System – 5.0/5.7L Closed Cooling | RA080034A
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
PCM Modular Returnless Fuel System – 5.0/5.7L Closed Cooling | RA080034A
A complete modular returnless fuel system assembly for PCM 5.0L and 5.7L closed-cooling inboard engines. The returnless design eliminates the fuel return line from the engine back to the tank, reducing heat soak in the fuel rail and simplifying the fuel circuit — a cleaner, more reliable setup than older return-style systems.
This is a high-value assembly that combines the fuel delivery components into a single serviceable module. Replacing the full assembly rather than individual components ensures all parts are matched, correctly calibrated, and free of wear — critical on a fuel system where a failure at sea is not an option.
Best Use Case
Best suited for restoring or rebuilding the fuel delivery system on PCM 5.0L and 5.7L closed-cooling inboard engines where the existing fuel system has failed, is leaking, or is no longer delivering consistent fuel pressure. Also the correct replacement when upgrading from a return-style fuel system to a returnless configuration on compatible engine builds. At this price point, this is a professional-grade repair typically performed by a certified marine technician.
- Application: PCM 5.0L and 5.7L closed-cooling inboard engines
- System type: Modular returnless fuel delivery
- Part number: RA080034A
- Includes: Complete modular fuel system assembly
- Cooling system compatibility: Closed cooling (freshwater cooled)
Parts Desk Insights
Confirm your engine’s exact model, serial number, and cooling system configuration before ordering — PCM 5.0/5.7L engines were produced in both raw-water and closed-cooling variants, and fuel system components are not interchangeable between them. This assembly (RA080034A) is paired in the PCM catalog with the Crusader Fuel/Water Separator RA080033 — if you’re replacing the fuel system, inspect the separator at the same time. For closed-cooling system components, also see the PCM Thermostat 170°F Closed Cooling R026007. Installation should be performed by a qualified marine technician; fuel system work requires proper pressure testing and leak verification before returning the vessel to service.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.