Fuel Pump – Fits Mercury Mariner 135HP 150HP 200HP 225HP (Replaces 14360A53, 14360A69, 14360A66)

Product Details

This aftermarket Fuel Pump – Fits Mercury Mariner 135HP 150HP 200HP 225HP is designed for Mercury Marine outboard engines across multiple DFI, EFI Pro Max, Pro Max, and Super Mag series. Compatible engines 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 spanning serial number ranges from 0D935000 through 0G856999.

This pump directly replaces Mercury Marine part numbers 14360A53, 14360A69, 14360A66, 14360T75, and 15930A21.

• Direct-mount installation using factory bolt pattern
• Suitable for gasoline fuel systems
• Includes complete pump assembly as shown

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Fuel Type

Gasoline

Application

Mercury Marine outboard engines

Horsepower Range

135, 150, 200, 225 HP

OEM Equivalent

14360A53

What's in the Box

• 1 × Fuel Pump

Installation Notes

1. Disconnect the battery negative terminal and relieve fuel system pressure before beginning work.
2. Locate the fuel pump mounted on the engine block and disconnect fuel lines, noting their orientation.
3. Disconnect electrical connectors from the pump assembly.
4. Remove mounting bolts and carefully extract the old pump; inspect mounting surfaces for damage or debris.
5. Clean the mounting flange and install new gaskets or seals if included.
6. Position the new pump onto the mounting surface, aligning bolt holes.
7. Hand-tighten mounting bolts, then torque to manufacturer specification in a cross pattern.
8. Reconnect fuel lines securely, ensuring correct inlet and outlet placement.
9. Reconnect electrical connectors, ensuring proper seating and locking.
10. Reconnect the battery and prime the fuel system according to engine manual procedures.
11. Start the engine and inspect for leaks at all fuel connections.
12. Test engine operation under load to confirm proper fuel delivery.

Troubleshooting & FAQ

How do I know if my fuel pump is failing?

Common symptoms include hard starting, loss of power under load, engine sputtering or stalling, inconsistent RPM, or fuel starvation at higher speeds. Inspect for fuel leaks, listen for abnormal pump noise, and test fuel pressure if possible.

Will this fit my Mercury engine if the serial number is not listed?

Only install if your serial number falls within the specified ranges (0D935000–0G856999 for applicable models). If your serial is outside these ranges or your model differs, verify compatibility with your engine's parts diagram before purchasing.

Can I install this pump myself?

Installation requires moderate mechanical skill, proper tools, and familiarity with fuel system safety. You must relieve fuel pressure, disconnect battery power, and torque fasteners correctly. Professional installation is recommended if you lack experience with fuel systems.

What is the expected service life of this pump?

Service life varies based on fuel quality, operating hours, and maintenance practices. Inspect the pump annually and replace if you notice declining performance, fuel leaks, or unusual noise. Keep fuel filters clean to extend pump life.

Is a new gasket or seal included?

The package includes the fuel pump assembly as shown. Verify mounting gaskets or seals in product images. If not visible, order OEM gaskets separately to ensure a leak-free installation.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.