Fuel Pump Gasket – Fits Yamaha 4HP/5HP Outboard Motors (Replaces 6E0-24435-00)
Fuel Pump Gasket – Fits Yamaha 4HP/5HP Outboard Motors (Replaces 6E0-24435-00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Fuel Pump Gasket – Fits Yamaha 4HP/5HP Outboard Motors (Replaces 6E...
Product Details
This replacement Fuel Pump Gasket – Fits Yamaha 4HP/5HP Outboard Motors is designed for a precise fit on Yamaha 4HP and 5HP 2-stroke models from 1984–2002 (including 4AC, 4MSH, 4AS, 4A, 5C, 5CS, and 5CMH series). It is also compatible with Mercury/Mariner 4A and 5C 2-stroke outboard engines.
It serves as a direct interchange for Yamaha part numbers 6E0-24435-00, 6E0-24435-00-00, 6E0-24471-00, 648-14342-23-00, and Mercury/Mariner 27-91746M.
- Installs as a direct OEM-replacement component.
- Engineered to seal the fuel pump body, preventing leaks.
- Made from a durable rubber/composite blend for longevity.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 6E0-24435-00 |
| Yamaha | 6E0-24435-00-00 |
| Yamaha | 6E0-24471-00 |
| Yamaha | 648-14342-23-00 |
| Mercury/Mariner | 27-91746M |
| Sierra | 18-99147 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits select Yamaha 4HP and 5HP 2-stroke outboard motors manufactured between 1984 and 2002.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | 4AC | 4 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 4MSH | 4 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 4AS | 4 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 4A | 4 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 5C | 5 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 5CS | 5 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
| Yamaha | 5CMH | 5 | 2-Stroke | 1984–2002 | 6E0-24435-00 |
Also compatible with specific Mercury and Mariner 4HP and 5HP 2-stroke models.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Mercury | 4A | 4 | 2-Stroke | 27-91746M | |
| Mercury | 5C | 5 | 2-Stroke | 27-91746M |
Technical Specs
- Product Type
- Fuel Pump Gasket
- Installation
- Direct Replacement
- Fuel Type
- Gasoline
- Material
- Rubber/Composite
- Dimensions
- 4.0" x 5.0" x 0.16"
- Weight
- 0.02 lb (0.009 kg)
- Other Technical Attributes
- Located between fuel pump body components
What’s in the Box
- 1 x Fuel Pump Gasket (Replaces 6E0-24435-00)
Installation Notes
- Disconnect the battery and ensure the engine is cool.
- Turn off the fuel supply and carefully disconnect the fuel lines from the pump.
- Remove the mounting bolts securing the fuel pump to the engine block.
- Gently separate the fuel pump from the engine and remove the old gasket.
- Thoroughly clean both mating surfaces, ensuring they are free of old gasket material and debris.
- Position the new gasket correctly on the mounting surface.
- Reinstall the fuel pump, tightening bolts to the manufacturer's recommended torque specification.
- Reconnect fuel lines, restore the fuel supply, and check for leaks before starting the engine.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
Verify your engine's brand, model, horsepower, and year against the compatibility tables provided on this page. Cross-referencing your old part number with the Part Number Matrix is the most reliable method.
What are the signs of a bad fuel pump gasket?
Common symptoms include visible fuel leaks around the fuel pump, a strong smell of gasoline, poor engine performance, stalling, or difficulty starting. A physical inspection may reveal a cracked or deteriorated gasket.
Should I use sealant with this gasket?
This gasket is designed to be installed dry. Applying sealants is generally not recommended unless specifically required by your engine's service manual, as it can interfere with proper sealing.
How often should this gasket be replaced?
This gasket should be replaced any time the fuel pump is removed for service or if you detect any signs of a leak. It is a critical sealing component that ensures fuel system integrity.
Is this an OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch-inspections for consistency.
What are your shipping speed and cost?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window, provided the item is unused and in its original condition. Please see our full policy page or reach out for detailed instructions.
Safety & Important Info
- Verify images and specifications against your original part before purchase. If anything differs—even if your model appears in the compatibility list—do not purchase.
- This is an aftermarket replacement component, not an OEM part.
- Professional installation is recommended for safety and optimal 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 quality control.
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