Fuel Pump Diaphragm – Fits Yamaha 25-90HP (Replaces 692-24411-00-00)
Fuel Pump Diaphragm – Fits Yamaha 25-90HP (Replaces 692-24411-00-00) 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 Diaphragm – Fits Yamaha 25-90HP (Replaces 692-24411-00-00)
Product Details
This replacement Fuel Pump Diaphragm is designed for a wide range of Yamaha 2-stroke and 4-stroke outboard motors from 25HP to 90HP, covering models from 1984 to later. As a critical component for maintaining fuel pressure, it ensures reliable engine performance by restoring the pump's original function.
It serves as a direct replacement for Yamaha part number 692-24411-00-00, Sierra 18-7391, and other aftermarket equivalents like 18-7787.
- Installs directly into the OEM fuel pump housing.
- Engineered for use in marine fuel systems with gasoline.
- Includes one diaphragm, a common component in larger fuel pump repair kits.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 692-24411-00-00 |
| Sierra | 18-7391 |
| Aftermarket | 18-7787 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This diaphragm fits a wide variety of Yamaha C-Series and standard series 2-stroke outboards from the mid-1990s through the late 2000s.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | C25 | 25 | 2-Stroke | 1996–1997 | 692-24411-00-00 | |
| Yamaha | C30 | 30 | 2-Stroke | 1996–1997 | 692-24411-00-00 | |
| Yamaha | C40 | 40 | 2-Stroke | 1995–2003 | 692-24411-00-00 | |
| Yamaha | C50 | 50 | 2-Stroke | 1998–2001 | 692-24411-00-00 | |
| Yamaha | C60 | 60 | 2-Stroke | 1996–2001 | 692-24411-00-00 | |
| Yamaha | C70 | 70 | 2-Stroke | 2000–2001 | 692-24411-00-00 | |
| Yamaha | C75 | 75 | 2-Stroke | 1995–1999 | 692-24411-00-00 | |
| Yamaha | C80 | 80 | 2-Stroke | 1996–1997 | 692-24411-00-00 | |
| Yamaha | 40 | 40 | 2-Stroke | 1995–2006 | 692-24411-00-00 | |
| Yamaha | 50 | 50 | 2-Stroke | 1995–2009 | 692-24411-00-00 | |
| Yamaha | 60 | 60 | 2-Stroke | 2001–2006 | 692-24411-00-00 | |
| Yamaha | 70 | 70 | 2-Stroke | 1995–2009 | 692-24411-00-00 | |
| Yamaha | 90 | 90 | 2-Stroke | 1995–2009 | 692-24411-00-00 | |
| Yamaha | B90 | 90 | 2-Stroke | 1997–1999 | 692-24411-00-00 |
Technical Specs
- Product Type
- Fuel Pump Diaphragm
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Dimensions
- 11.0" L x 8.5" W x 0.3" H
- Other Technical Attributes
- Fuel pump diaphragm component
What’s in the Box
- 1 x Diaphragm (692-24411-00-00)
Installation Notes
- Ensure the engine is off and the battery is disconnected.
- Relieve any pressure in the fuel system according to your service manual.
- Place rags or a container under the fuel pump to catch any spilled fuel.
- Carefully disconnect the fuel lines from the pump.
- Unbolt and remove the fuel pump assembly from the engine block.
- Disassemble the pump housing to access the old diaphragm. Note the orientation of all components.
- Remove the old diaphragm and inspect the housing for wear, cracks, or debris.
- Install the new diaphragm, ensuring it is seated correctly.
- Reassemble the fuel pump housing and torque screws to factory specifications.
- Reinstall the pump onto the engine, reconnect fuel lines, and connect the battery.
- Prime the fuel system and check thoroughly for leaks before starting the engine.
Troubleshooting & FAQ
What are the signs of a failing fuel pump diaphragm?
Common symptoms include difficulty starting, engine stalling, rough idling, poor acceleration, and visible fuel leaks from the pump housing. A torn or stiff diaphragm cannot maintain proper fuel pressure, leading to these issues.
How do I confirm this diaphragm fits my specific engine?
The most reliable method is to match your engine's model and year to the compatibility chart. Additionally, cross-reference the OEM part number (692-24411-00-00) found on your existing part or in your service manual with the numbers in our Part Number Matrix.
Is this the entire fuel pump or just a single component?
This listing is for the internal diaphragm only. It is not a complete fuel pump assembly. This component is typically replaced as part of a fuel pump rebuild.
Can I install this diaphragm myself?
While installation is possible for those with mechanical experience, we recommend professional installation. Working with fuel systems requires specific safety precautions to prevent fire hazards and ensure proper function.
How often should a fuel pump diaphragm be replaced?
There is no fixed replacement interval. It should be inspected during routine service and replaced if it appears stiff, cracked, or damaged. It's often replaced proactively when rebuilding a fuel pump or addressing fuel delivery problems.
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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