Fuel Pump Diaphragm – Fits Yamaha 9.9-90 HP Outboards (Replaces 63V-24411-00)
Fuel Pump Diaphragm – Fits Yamaha 9.9-90 HP Outboards (Replaces 63V-24411-00) is backordered and will ship as soon as it is back in stock.
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Fuel Pump Diaphragm – Fits Yamaha 9.9-90 HP Outboards (Replaces 63V...
Product Details
This Fuel Pump Diaphragm – Fits Yamaha 9.9-90 HP Outboards (Replaces 63V-24411-00) is a crucial component for maintaining proper fuel delivery in a range of Yamaha outboards. It is designed for 9.9 HP to 90 HP 2-Stroke models, primarily from the 1980s through the 2000s, where it regulates fuel flow within the fuel pump assembly.
It serves as a direct interchange for Yamaha part number 63V-24411-00 and other equivalent aftermarket references.
- Direct replacement for the original OEM component.
- Made from a durable, gasoline-resistant rubber compound.
- Engineered for optimal fuel delivery and pressure regulation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 63V-24411-00 |
| Aftermarket | REC63V-24411-00 |
| Yamadura | 63V-24411-00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | Various | 9.9 | 2-Stroke | 1980s–2000s | 63V-24411-00 | Used in fuel pump assembly |
| Yamaha | Various | 15 | 2-Stroke | 1980s–2000s | 63V-24411-00 | Used in fuel pump assembly |
| Yamaha | Various | 25-90 | 2-Stroke | 1980s–2000s | 63V-24411-00 | As specified by aftermarket catalog |
Technical Specs
- Product Type
- Fuel Pump Diaphragm
- Installation
- Direct replacement for OEM component
- Fuel Type
- Gasoline
- Material
- Durable membrane/rubber compound
- Dimensions
- 10.0 cm × 9.5 cm × 0.3 cm
- Weight
- 0.01 kg (10 g)
- Warranty
- Varies by manufacturer (typically 1 year)
- Other Technical Attributes
- Designed for optimal fuel delivery and pressure regulation
What’s in the Box
- 1 x Fuel Pump Diaphragm (Replaces 63V-24411-00)
Installation Notes
- Disconnect the battery and relieve any pressure in the fuel system.
- Locate the fuel pump assembly on the engine block.
- Carefully disconnect the fuel lines, noting their original positions for reassembly.
- Remove the mounting bolts that secure the fuel pump assembly.
- Disassemble the pump housing to access the old diaphragm.
- Remove the old diaphragm, ensuring all mating surfaces are clean and free of old gasket material.
- Install the new diaphragm, confirming it is correctly seated and oriented.
- Reassemble the fuel pump housing, tightening screws to the manufacturer’s recommended torque specifications.
- Reinstall the fuel pump assembly onto the engine.
- Reconnect the fuel lines securely.
- Prime the fuel system and carefully check for any leaks before starting the engine.
Troubleshooting & FAQ
How do I know if my fuel pump diaphragm has failed?
Common signs include the engine bogging down, stalling at low speeds, difficulty starting, or visible fuel leaks around the pump housing. Poor engine performance at high RPMs can also indicate a failing diaphragm.
Will this fit my specific Yamaha model and year?
This diaphragm is designed for a wide range of Yamaha 2-stroke outboards from 9.9 HP to 90 HP, primarily from the 1980s to the 2000s. Always verify your OEM part number is 63V-24411-00 and compare your old part to our product images to ensure a perfect match.
What is the recommended replacement interval for this part?
There is no fixed replacement interval, but diaphragms can degrade over time due to fuel additives and age. We recommend inspecting it during regular fuel system service and replacing it at the first sign of wear, stiffness, or leakage.
Is any special tool required for installation?
Basic hand tools such as screwdrivers and wrenches are typically sufficient. However, a torque wrench is recommended for reassembling the pump housing to ensure a proper seal without damaging the components.
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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