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Start ShoppingATHENA Cyl Head O-Ring Kit Yz - Viton Engine Sealing Kit for Yamaha
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Description
Keep your high-performance engine running smoothly with ATHENA's premium cylinder head o-ring kit. Engineered for Yamaha YZ models, this durable solution ensures perfect head gasket sealing and long-lasting reliability under extreme conditions.
Key Features
- Viton Fluorocarbon Rubber: Resists heat, oil, and chemicals for superior durability in harsh engine environments.
- Complete O-Ring Kit: Includes multiple o-rings for comprehensive head gasket sealing and easy installation.
- Yamaha YZ Compatibility: Precision-engineered for seamless fitment on specified Yamaha models.
Why Choose This Product
Upgrade your engine maintenance with a kit built for performance and longevity. The Viton material withstands extreme temperatures and chemical exposure, reducing the risk of leaks and costly repairs. This complete o-ring set simplifies head gasket maintenance, saving you time and ensuring optimal engine efficiency. Perfect for riders who demand reliability without compromising power or performance.
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Keep your high-performance engine running smoothly with ATHENA's premium cylinder head o-ring kit. Engineered for Yamaha YZ models, this durable solution ensures perfect head gasket sealing and long-lasting reliability under extreme conditions.
Key Features
- Viton Fluorocarbon Rubber: Resists heat, oil, and chemicals for superior durability in harsh engine environments.
- Complete O-Ring Kit: Includes multiple o-rings for comprehensive head gasket sealing and easy installation.
- Yamaha YZ Compatibility: Precision-engineered for seamless fitment on specified Yamaha models.
Why Choose This Product
Upgrade your engine maintenance with a kit built for performance and longevity. The Viton material withstands extreme temperatures and chemical exposure, reducing the risk of leaks and costly repairs. This complete o-ring set simplifies head gasket maintenance, saving you time and ensuring optimal engine efficiency. Perfect for riders who demand reliability without compromising power or performance.| SKU | GM3658B964 |
|---|---|
| MPN | P400485999003 |
| UPC/GTIN | 8051764547807 |
| Brand | Athena |
| Category | Engine |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | YZ250F | 2004-2024 |
| Yamaha | YZ450F | 2006-2024 |
| Yamaha | WR250F | 2008-2024 |
Frequently Asked Questions
Fits Yamaha YZ250F (2004-2024), YZ450F (2006-2024), and select WR250F models. Check full fitment list.
Yes, high-temperature Viton o-rings for superior sealing and durability.
No, these o-rings are designed for dry installation; clean surfaces thoroughly.
Complete set of cylinder head o-rings for one top-end.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- socket set
- torque wrench
- o-ring pick tool
Pro Tips
- Lubricate o-rings with engine oil before install
- Torque head bolts to spec in crisscross pattern
Common Mistakes to Avoid
- Stretching o-rings during installation
- Not cleaning mating surfaces
Comparison vs Stock/OEM
Direct replacement for Yamaha OEM o-rings with premium Viton material
Improvements
- Better heat resistance
- Improved sealing under high compression
- Longer service life
Considerations
- Slightly higher cost than basic OEM
Durability & Warranty
Expected Lifespan
Matches engine rebuild interval (40-100 hours racing)
Warranty
2 year manufacturer defect warranty
Maintenance
Inspect during top-end services; replace with every rebuild
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