Fuel Pump Kit – Fits Mercury 30–300HP TwoStroke Outboards (Replaces 14360A78)

Fuel Pump Kit – Fits Mercury 30–300HP TwoStroke Outboards (Replaces 14360A78)

This fuel pump repair kit is designed for a wide range of Mercury Marine 30–300HP TwoStroke engines, including multiple models from the 3.0L EFI and DFI series (1996–2008).

It serves as a direct replacement for Mercury Marine part numbers 14360A78 and earlier versions 14360A16, 14360A41, and 14360A43.

• Installation Type: Direct OEM replacement
• Compatible Fuel: Gasoline (marine applications)
• Complete Kit: Includes all necessary gaskets, springs, and diaphragms for a full rebuild.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers.

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Fuel Pump Kit (14360A78) - Includes multiple gaskets, springs, and diaphragms for complete pump rebuild.

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area and have a fire extinguisher nearby.
2. Relieve Fuel Pressure: Carefully loosen a fuel line fitting or use the Schrader valve (if available) to safely release system pressure.
3. Disconnect Fuel Lines: Place a rag under the fittings to catch residual fuel and disconnect the inlet and outlet fuel lines from the pump.
4. Remove Old Pump: Unbolt the old fuel pump assembly from the engine block.
5. Clean Mounting Surface: Thoroughly clean the engine's mounting surface to remove old gasket material and ensure a proper seal.
6. Install New Pump Kit: Assemble the new pump using the components provided. Place the new gasket on the mounting surface and install the new pump, ensuring all parts are correctly aligned.
7. Secure Pump: Tighten the mounting bolts to the manufacturer's recommended torque specifications.
8. Reconnect & Prime: Reattach the fuel lines securely. Squeeze the primer bulb until it is firm to prime the system.
9. Inspect for Leaks: Reconnect the battery, start the engine, and carefully inspect the pump and all connections for any signs of fuel leaks.

Troubleshooting & FAQ

Q: How do I confirm this fuel pump kit fits my Mercury outboard?

A: Verify your engine's model and serial number against the detailed list in the "Compatible Engine Models" table above. For assistance locating your serial number, please consult our Mercury Serial Number Guide.

Q: What are the common signs of a failing fuel pump?

A: Symptoms often include the engine bogging down, sputtering at high speeds, difficulty starting, stalling, or a general loss of power. These issues occur because the engine is not receiving a consistent supply of fuel.

Q: Is this a complete kit for a full pump rebuild?

A: Yes, this is a complete kit that includes all the necessary components for a standard rebuild, including the pump diaphragms, gaskets, and springs as shown in the product images.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.