Fuel Pump Assembly for Mercury/Mariner 30–300 HP 2-Stroke Outboards — Replaces 14360A78, 14360A73 and 14360A43
Fuel Pump Assembly for Mercury/Mariner 30–300 HP 2-Stroke Outboards — Replaces 14360A78, 14360A73 and 14360A43 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Fuel Pump Assembly for Mercury/Mariner 30–300 HP 2-Stroke Outboards...
Fuel Pump Assembly for Mercury/Mariner 30–300 HP 2-Stroke Outboards — Replaces 14360A78, 14360A73 and 14360A43 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket fuel pump assembly is designed as a replacement for selected Mercury and Mariner 2-stroke outboard applications. It is commonly cross-referenced with Mercury/Mariner fuel pump part number 14360A78 and related numbers listed below.
Fitment depends on the exact engine configuration and serial-number range. Mercury parts catalogs show that similar fuel pump references may appear in different fuel-pump configurations, so confirm the engine model, stroke, serial number, mounting arrangement and pump appearance before ordering.
- Product type: Aftermarket fuel pump assembly
- Primary application: Selected Mercury and Mariner 2-stroke outboard engines
- Installation: Direct replacement when the original pump and application match
- Package contents: 1 fuel pump assembly and 1 mounting gasket, as supplied for this listing
Part Number References
The following manufacturer and aftermarket reference numbers are provided for identification and cross-reference purposes. A matching number alone does not replace verification of the complete engine application.
| Brand | Reference Part Number |
|---|---|
| Mercury/Mariner | 14360A78 |
| Mercury/Mariner | 14360A73 |
| Mercury/Mariner | 14360A71 |
| Mercury/Mariner | 14360A43 |
| Mercury/Mariner | 14360A50 |
| Mercury/Mariner | 14360A41 |
| Mercury/Mariner | 14360A16 |
| Mercury/Mariner | 14360A15 |
| Mercury/Mariner | 14360A14 |
| Mercury/Mariner | 98766-C1 |
Engine and Model Compatibility
The reference application range covers selected Mercury and Mariner 2-stroke outboards from approximately 30 HP through 300 HP. The ranges below summarize the applications associated with the listed reference numbers; they are not a substitute for checking the engine serial number and original pump configuration.
| Brand | Rated HP | Stroke | Approximate Years | Reference | Application and serial-number notes |
|---|---|---|---|---|---|
| Mercury/Mariner | 30–60 | 2-Stroke | Selected applications, approximately 1992–2009 | 14360A78 | Includes selected 2-cylinder, 3-cylinder, 4-cylinder and Jet applications. Serial ranges vary by model and configuration, including ranges beginning 0G, 0P, 0T, 9589039 and 9793577. |
| Mercury/Mariner | 65–90 | 2-Stroke | Selected applications, approximately 1992–2009 | 14360A78 | Includes selected 3-cylinder, Jet and larger outboard applications. Examples include serial ranges 0C222000–0D283221, 0D283222–0G760299, 0G760300–0T979999 and 0P017000–0P325499. |
| Mercury/Mariner | 100–125 | 2-Stroke | Selected applications, approximately 1995–2009 | 14360A78 | Selected 4-cylinder applications. Serial ranges vary by model and may include 0G760300–0G965520, 0G960500–0T979999 and 0P017000–0P325499. |
| Mercury/Mariner | 150–175 | 2-Stroke | Selected applications, approximately 1998–2004 | 14360A78 | Verify the exact serial range before ordering; examples in the supplied application data include 0G960500–0T408999. |
| Mercury/Mariner | 200–225 | 2-Stroke | Selected applications, approximately 1995–2007 | 14360A78 | Includes selected larger-displacement applications, including some 3.0 L models. Serial ranges vary substantially by model. |
| Mercury/Mariner | 250–300 | 2-Stroke | Selected applications, approximately 1995–2004 | 14360A78 | Verify the original pump style and serial range. The 300 HP application data includes separate serial ranges such as 0G610221–0T105297 and 0T235084–0T429939. |
Important: The same reference number can appear in catalog diagrams labeled for different pump configurations, including manual and electric fuel-pump diagrams. Confirm that the replacement matches your original pump, hose routing, mounting pattern and engine serial number.
Technical Specifications
- Product Type
- Aftermarket fuel pump assembly
- Application
- Selected Mercury and Mariner 2-stroke outboard engines
- Installation
- Direct OEM-style replacement when application and configuration match
- Fuel Type
- Gasoline
- Connection
- Fuel-hose barb fittings; verify hose routing against the original pump
- Pump Design
- Replacement diaphragm-style outboard fuel-pump assembly for applicable installations
- Housing
- Metallic housing with rubber diaphragm construction, as represented by the supplied product information
- Approximate Dimensions
- 10 × 9 × 6 cm (4 × 3.5 × 2.4 in)
- Approximate Weight
- 227 g (0.5 lb)
What's in the Box
- 1 × Fuel pump assembly
- 1 × Mounting gasket, reference 98769-1
Installation Notes
- Disconnect the battery, allow the engine to cool and safely relieve fuel-system pressure.
- Place absorbent rags beneath the existing pump and note the orientation of every fuel and pulse hose.
- Disconnect the fuel inlet, fuel outlet and pulse hoses. Cap or protect open fuel lines from contamination.
- Remove the mounting fasteners and take off the old fuel pump.
- Clean the mounting surface and remove all old gasket material without damaging the engine surface.
- Position the supplied gasket and replacement pump. Tighten the fasteners to the engine manufacturer's specified torque.
- Reconnect each fuel and pulse hose to the correct fitting and secure the hose clamps.
- Prime the fuel system with the primer bulb, inspect carefully for leaks and confirm correct operation before returning the boat to service.
Always use the service information for the specific engine when determining hose routing, fastener torque and safety procedures.
Troubleshooting and FAQ
How do I know if my fuel pump is failing?
Possible symptoms include hard starting, engine bogging at higher speed, sputtering, loss of RPM under load or fuel leakage around the pump body. These symptoms can also be caused by restricted fuel lines, a faulty primer bulb, contaminated fuel, an air leak or an ignition problem, so diagnose the complete fuel system before replacement.
Will this fit if my part number is slightly different?
This assembly is cross-referenced to the numbers listed in the Part Number References section, but a similar number is not sufficient by itself. Confirm the engine brand, model, horsepower, stroke, serial number, pump configuration, mounting pattern and hose connections.
What is the pulse connection used for?
On applicable 2-stroke installations, the pulse hose transfers crankcase pressure changes to the pump diaphragm. The hose must be connected to the correct port and must not be kinked, split or incorrectly routed.
Does the pump require periodic maintenance?
This type of replacement pump is generally treated as a replacement component rather than a routinely serviceable item. Use clean fuel, keep the fuel system free of debris and replace fuel filters at the intervals recommended for the engine.
Is this an OEM part?
No. This is an aftermarket replacement assembly. Mercury and Mariner names and part numbers are used only to identify the intended applications and reference numbers.
What should I do if the replacement looks different?
Do not force installation or modify the pump. Compare the mounting holes, fittings, hose routing and overall configuration with the original part and verify the engine serial number before use.
Safety and Important Information
- Fuel is flammable. Work in a well-ventilated area away from flames, sparks and ignition sources.
- Confirm the complete engine application and serial number before ordering.
- Compare the replacement pump with the original part before installation.
- Do not operate the engine if any fuel leak is present.
- Professional installation is recommended when you are not familiar with marine fuel systems.
About Sea Sierra
- Pro-Grade Standards — Marine replacement parts selected for practical service applications.
- Global Fulfillment — Standard delivery and available shipping options are shown at checkout.
- Replacement-Part Value — Aftermarket alternatives for maintaining compatible marine engines.
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