Fuel Pump for Mercury Mariner 135HP, 150HP, 200HP & 225HP — Replaces 14360A53, 14360A69 and 14360A66

Product Details

This aftermarket fuel pump for Mercury Mariner 135HP, 150HP, 200HP and 225HP outboard engines is intended for specified Mercury Marine DFI, EFI Pro Max, Pro Max and Super Mag applications. Listed applications include Mercury 135 HP DFI, 150 HP DFI and EFI Pro Max, 200 HP EFI Pro Max and Pro Max/Super Mag, and 225 HP EFI Pro Max models within the serial-number ranges shown below.

This replacement pump is listed for Mercury Marine part numbers 14360A53, 14360A69, 14360A66, 14360T75 and 15930A21. Confirm the complete engine model, serial number, original pump and mounting arrangement before ordering.

• Replacement fuel-pump assembly for specified Mercury Marine outboards
• Designed for gasoline fuel-system applications
• Single fuel-pump assembly; supplied as shown

Part Number Matrix

Use the following references to compare the replacement with the part number on your original pump. Part-number references do not replace model and serial-number verification.

Engine & Model Compatibility

The applications below are organized by model family, horsepower and serial range. Verify the complete serial number and engine configuration against the original part or the applicable engine parts diagram before installation.

Technical Specifications

Product Type

Aftermarket fuel-pump assembly

Fuel Type

Gasoline

Application

Specified Mercury Marine Mariner outboard engines

Horsepower Range

135 HP, 150 HP, 200 HP and 225 HP

Replacement References

14360A53, 14360A69, 14360A66, 14360T75 and 15930A21

Package Type

Single fuel-pump assembly

What's in the Box

• 1 × Fuel pump assembly

Mounting gaskets, seals, hardware and additional components are not confirmed as included unless shown with the product or specifically stated by the seller.

Installation Notes

1. Disconnect the battery negative terminal and relieve fuel-system pressure before beginning work.
2. Locate the fuel pump and identify the fuel-line and electrical-connection routing before removal.
3. Disconnect the fuel lines and electrical connectors, preventing dirt from entering the fuel system.
4. Remove the mounting fasteners and carefully take out the old pump.
5. Inspect the mounting surface, fuel lines, connectors and seals for damage, contamination or wear.
6. Install new gaskets or seals where required by the engine service procedure; they are not confirmed as included with this product.
7. Position the replacement pump, align the mounting holes and tighten the fasteners to the engine manufacturer's specification.
8. Reconnect the fuel lines in their original positions and secure all connections.
9. Reconnect the electrical connectors and confirm that each locking feature is fully seated.
10. Reconnect the battery and prime the fuel system according to the engine service manual.
11. Start the engine and inspect every fuel connection for leaks before operating the boat.
12. Stop immediately if leakage, abnormal noise or poor engine operation is observed.

Troubleshooting & FAQ

How do I know if my fuel pump may be failing?

Possible symptoms include hard starting, loss of power under load, sputtering, stalling, inconsistent engine speed or fuel starvation at higher speeds. Check for leaks and damaged lines, and test fuel-system pressure only according to the applicable service procedure.

Will this fit a Mercury engine if its serial number is not listed?

Do not assume compatibility when the serial number is outside the ranges shown. Compare the complete engine model, serial number, original pump and mounting arrangement with the applicable parts diagram before ordering.

Can I install this pump myself?

Fuel-system work requires appropriate tools, mechanical knowledge and strict fuel-safety procedures. Relieve fuel pressure, disconnect battery power and follow the engine service manual. Professional installation is recommended if you are not experienced with marine fuel systems.

Are mounting gaskets or seals included?

The listed package contains one fuel-pump assembly. Gaskets, seals and mounting hardware are not confirmed as included unless they are shown with the product or specifically stated in the order documentation.

Is this an OEM part?

No. This listing is for an aftermarket replacement fuel-pump assembly. The replacement references above are provided for application comparison and do not indicate that the part is manufactured by Mercury Marine.

How should I verify the replacement before installation?

Compare the original pump's part number, mounting pattern, connector configuration, fuel-line positions and engine serial number with the information above. Do not install the pump if any of these details differ.

Safety & Important Information

• Work in a well-ventilated area away from flames, sparks and ignition sources.
• Relieve fuel-system pressure and disconnect battery power before removing the pump.
• Verify the model, serial range, original part number and physical configuration before purchase.
• Inspect all fuel connections for leaks before operating the engine.
• This is an aftermarket replacement, not an OEM Mercury Marine component.
• Professional installation is recommended for safe and reliable fuel-system service.

About Sea Sierra

• Marine Replacement Parts — We provide aftermarket components for a range of marine repair applications.
• Application-Focused Listings — Product references and compatibility information are provided to help with part comparison.
• Support for Part Verification — Always compare the original component and complete engine identification details before ordering.