Fuel Pump Gasket – Fits Yamaha Outboard 20–90HP (Replaces 648-24435-02-00)
Fuel Pump Gasket – Fits Yamaha Outboard 20–90HP (Replaces 648-24435-02-00) is backordered and will ship as soon as it is back in stock.
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Fuel Pump Gasket – Fits Yamaha Outboard 20–90HP (Replaces 648-24435...
Product Details
This aftermarket Fuel Pump Gasket – Fits Yamaha Outboard 20–90HP (Replaces 648-24435-02-00) is designed for a precise fit on a range of Yamaha Outboard engines from 20HP to 90HP (both 2-stroke and 4-stroke models, 1986–1993) and the 1990 Yamaha WaveRunner WR650D. It ensures a reliable seal for the fuel pump assembly.
This part is a direct replacement for Yamaha OEM part numbers 648-24435-02-00 and its successor, 648-24435-03-00.
- Engineered for direct OEM replacement installation.
- Made from materials designed to withstand gasoline exposure.
- Seals the fuel pump to prevent leaks and maintain pressure.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 648-24435-02-00 | 648-24435-03-00 |
| Yamaha | 648-24435-03-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket fits a wide range of Yamaha marine engines. Please verify your specific model is listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha Outboard | 25HP | 25 | 1986, 1987, 1990, 1993 | 648-24435-02-00 | Fuel Tank Component | |
| Yamaha Outboard | 30HP | 30 | 1990, 1992, 1993 | 648-24435-02-00 | Fuel Tank Component | |
| Yamaha Outboard | 40HP | 40 | 1987–1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha Outboard | 50HP | 50 | 1987–1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha Outboard | 55HP | 55 | 1989, 1992 | 648-24435-02-00 | Fuel Tank Component | |
| Yamaha Outboard | 60HP | 60 | 1991–1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha Outboard | 70HP | 70 | 1987–1989, 1992, 1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha Outboard | 85HP | 85 | 1989–1991, 1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha Outboard | 90HP | 90 | 1987–1993 | 648-24435-02-00 | Fuel System Component | |
| Yamaha WaveRunner | WR650D LX | 2-Stroke | 1990 | 648-24435-02-00 | Fuel Pump Component |
Technical Specs
- Product Type
- Fuel Pump Gasket
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Housing Material
- OEM material (likely rubber/paper composite)
- Product Length
- 9.5 in
- Product Width
- 10.0 in
- Product Height
- 0.3 in
What’s in the Box
- 1 x Fuel Pump Gasket (Replaces 648-24435-02-00/648-24435-03-00)
Installation Notes
- Before you begin, disconnect the negative battery cable for safety. Ensure the engine is cool.
- Relieve pressure from the fuel system according to the manufacturer's service manual to prevent fuel spray.
- Carefully remove any components blocking access to the fuel pump. Note their order and placement.
- Unscrew the fuel pump assembly and gently remove it, taking care not to damage mating surfaces.
- Remove the old gasket. Use a plastic scraper and an approved solvent to clean both the pump and engine block surfaces of any old gasket material or sealant residue. Ensure surfaces are completely clean and dry.
- Position the new gasket correctly on the fuel pump or engine block. Do not use sealant unless explicitly required by your service manual.
- Reinstall the fuel pump, tightening the bolts in a crisscross pattern to the torque specified in your service manual.
- Reconnect fuel lines and any other components you removed. Reconnect the battery cable.
- Prime the fuel system as per your owner's manual. Start the engine and carefully check for any fuel leaks around the gasket area.
Troubleshooting & FAQ
How do I know if this gasket will fit my specific Yamaha engine?
The best way to ensure compatibility is to check the Engine & Model Compatibility table on this page. Match your engine's model, horsepower, and year with the listed applications. You can also verify that your existing part number is 648-24435-02-00 or 648-24435-03-00.
What are the signs of a failing fuel pump gasket?
Common signs include a visible fuel leak or fuel smell around the engine, difficulty starting, rough idling, engine hesitation, or a loss of power. A compromised gasket can lead to a loss of fuel pressure.
When should this gasket be replaced?
It's good practice to replace the fuel pump gasket whenever the fuel pump is removed for service or replacement. It should also be replaced immediately if any signs of leaking or degradation are noticed.
Do I need to use gasket sealant with this part?
In most cases, this gasket is designed to be installed dry without any additional sealant. Using sealant can sometimes interfere with a proper seal. Always consult your engine's service manual for specific recommendations.
Is this a direct replacement for the original part?
Yes, this is an aftermarket part designed to be a direct replacement, matching the fit and function of the original Yamaha gasket (648-24435-02-00).
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 vs 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.
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