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Yamaha F25-F40 Manual Release Screw O-Ring 6D8-43863-00-00
| Quantity | Price |
| 1 | 2.85 |
OEM Yamaha Manual Release Screw O-Ring
Yamaha F25-F40 Power Trim & Tilt Manual Release O-Ring
This genuine OEM Yamaha O-ring is used on the manual release screw in select Yamaha F25 through F40 power trim and tilt assemblies.
The manual release screw O-ring helps seal the trim and tilt hydraulic system around the manual release valve area to help prevent fluid leakage and maintain proper trim operation.
Compatible Applications
| Engine Range | Engine Type | System | Application Notes |
|---|---|---|---|
| Yamaha F25 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
| Yamaha F30 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
| Yamaha F40 | FourStroke | Power Trim & Tilt | Select models using 6D8-style trim assembly |
Always verify your Yamaha model, year, serial number, and trim assembly diagram before ordering hydraulic trim seals and O-rings.
OEM Part Numbers & Cross References
| Brand | Part Number |
|---|---|
| Yamaha OEM | 6D8-43863-00-00 |
| Alternate Search Format | 6D8438630000 |
What This O-Ring is Used For
This Yamaha O-ring seals the manual release screw area of compatible power trim and tilt hydraulic assemblies.
The manual release screw allows the engine to be manually tilted when hydraulic trim operation is unavailable or when service access is needed.
A worn or damaged O-ring can allow hydraulic fluid seepage around the manual release screw and may affect trim and tilt performance.
Replacing the O-ring during manual release screw service helps maintain proper hydraulic sealing and reliable trim system operation.
Key Features and Benefits
- Genuine OEM Yamaha replacement O-ring
- Fits select Yamaha F25-F40 FourStroke trim assemblies
- Used on the manual release screw / manual release valve area
- Helps seal the power trim and tilt hydraulic system
- Helps prevent hydraulic fluid leakage
- Common replacement during trim system service
- OEM Yamaha fit and material compatibility
- Sold individually
O-Ring Details
- Brand: Yamaha
- Part Type: Manual Release Screw O-Ring
- OEM Part Number: 6D8-43863-00-00
- Application: Yamaha F25-F40 Power Trim & Tilt Systems
- System: Trim / Tilt Hydraulic System
- Use: Manual release screw sealing
- Quantity Sold: Each
FAQ
What does this O-ring fit?
This O-ring fits select Yamaha F25, F30, and F40 FourStroke outboards using compatible power trim and tilt assemblies.
Where is this O-ring used?
It is used on the manual release screw area of the Yamaha power trim and tilt hydraulic assembly.
Is this a genuine Yamaha part?
Yes. This is a genuine OEM Yamaha O-ring, part number 6D8-43863-00-00.
Can a bad manual release screw O-ring cause a leak?
Yes. A worn or damaged O-ring can allow hydraulic fluid to leak around the manual release screw area.
Should I verify my serial number before ordering?
Yes. Yamaha used different trim assemblies depending on model and production range, so serial number and diagram verification are recommended.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Hydraulic trim components should be installed only after confirming correct fitment.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
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