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SKU:
NLT1R00514
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Electric Fuel Pump Module for Matching MerCruiser 4.3L 5.0L and 5.7L Systems
$64.99
In Stock
$64.99
Sale price
$64.99
Regular price
Electric marine fuel-pump module for select MerCruiser 4.3L, 5.0L, and 5.7L engine packages with the identical stamped pump number, pressure system, ports, and electrical connection.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Select MerCruiser 4.3L marine engines with the identical pump number and low- or high-pressure design
- Select MerCruiser 5.0L marine engines with the identical pump number and system layout
- Select MerCruiser 5.7L marine engines with the identical pump number and system layout
Product Overview
A boat that cranks but will not start, loses power on plane, or needs repeated priming may have a fuel-delivery problem—but engine displacement does not identify the correct MerCruiser pump. Carbureted low-pressure systems and EFI high-pressure systems can use very different modules on the same 4.3L, 5.0L, or 5.7L engine size.
This electric pump moves fuel at the pressure required by its specific marine system. Order only after comparing the number stamped on the original pump, carbureted versus EFI layout, pressure specification, inlet and outlet threads, mounting bracket, connector, and cooling or vapor-separator arrangement.
Key Features & Performance
- Electric fuel-pump assembly for physically matching MerCruiser installations
- Covers select 4.3L, 5.0L, and 5.7L packages only after exact identification
- Addresses a confirmed pressure or pump-motor failure
- Marine-system fitment requires more than engine displacement
Common Uses
- Replacing a pump that has correct voltage and ground but will not run
- Correcting low measured fuel pressure after restrictions are eliminated
- Repairing a leaking or corroded pump module with an exact physical match
- Restoring delivery after contaminated fuel has been removed from the system
Technical Specifications
- Product Type: Electric Marine Fuel Pump Module
- Engine Families: Select MerCruiser 4.3L, 5.0L, and 5.7L
- Fuel System: Must match original carbureted low-pressure or EFI high-pressure design
- Condition: New aftermarket
- Fitment Requirement: Original stamped number and full physical comparison
Installation & Fitment
- Identify the original stamped number and obtain the specified fuel-pressure range before ordering
- Disconnect battery power, ventilate the bilge, and eliminate every ignition source
- Use marine-rated hose, seals, clamps, and fittings and correct any tank contamination
- Pressure-test the system and inspect for fuel vapor or liquid leakage before engine operation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, electrical or fuel-system version, dimensions, installed options, and previous repairs can affect fitment. Compare the original part and application information before purchase.
Frequently Asked Questions
Q: Why can’t I choose this pump by 4.3L, 5.0L, or 5.7L alone? A: MerCruiser used carbureted and EFI systems with different pressures and fittings on those displacements. The original pump number and system design must match.
Q: Can a clogged anti-siphon valve imitate a weak pump? A: Yes. Tank vents, pickup tubes, filters, anti-siphon valves, lines, and electrical voltage drop can all reduce fuel delivery.
Q: How do I confirm fitment before ordering? A: Match the original reference number where available, then compare the removed part, dimensions, connections, mounting details, model, serial or production information, and package photos.
Q: Is this an original-equipment part? A: No. This is a new aftermarket part. Brand names and reference numbers are used only to identify compatible applications.
Part Summary
keywords: MerCruiser electric fuel pump, 4.3 marine fuel pressure repair, 5.0 MerCruiser pump module, 5.7 boat fuel pump, carbureted versus EFI pump, marine no start fuel delivery
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.