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Start ShoppingCOMETIC C9359 Evo Sportster Seal - High-Performance Gasket for Reliable Engine Sealing
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Description
Ensure peak engine performance with the COMETIC C9359 Evo Sportster Seal, engineered to deliver exceptional durability and leak resistance for motorcycle engines. This high-performance gasket is designed to withstand extreme temperatures and pressures, keeping your engine running smoothly and reliably.
Key Features
- High-Temperature Resistance: Constructed from advanced materials to endure extreme heat without warping or degrading.
- Durable Rubber Compound: Reinforced rubber ensures long-lasting sealing and resistance to oil and fuel exposure.
- Precision Fitment: Engineered for a perfect fit on Evo Sportster engines to prevent leaks and maintain compression.
- Easy Installation: Designed for straightforward replacement, saving time and labor during maintenance.
Why Choose This Product
Upgrade your engine's reliability with a gasket built for high-performance motorcycles. The COMETIC C9359 offers superior sealing capabilities, reducing the risk of oil leaks and engine damage. Its durable construction ensures compatibility with demanding riding conditions, while the precise design guarantees optimal engine efficiency. Trust Cometic for parts that meet rigorous industry standards and deliver consistent performance.
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Ensure peak engine performance with the COMETIC C9359 Evo Sportster Seal, engineered to deliver exceptional durability and leak resistance for motorcycle engines. This high-performance gasket is designed to withstand extreme temperatures and pressures, keeping your engine running smoothly and reliably.
Key Features
- High-Temperature Resistance: Constructed from advanced materials to endure extreme heat without warping or degrading.
- Durable Rubber Compound: Reinforced rubber ensures long-lasting sealing and resistance to oil and fuel exposure.
- Precision Fitment: Engineered for a perfect fit on Evo Sportster engines to prevent leaks and maintain compression.
- Easy Installation: Designed for straightforward replacement, saving time and labor during maintenance.
Why Choose This Product
Upgrade your engine's reliability with a gasket built for high-performance motorcycles. The COMETIC C9359 offers superior sealing capabilities, reducing the risk of oil leaks and engine damage. Its durable construction ensures compatibility with demanding riding conditions, while the precise design guarantees optimal engine efficiency. Trust Cometic for parts that meet rigorous industry standards and deliver consistent performance.
| SKU | GMD5856077 |
|---|---|
| MPN | C9359 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Sportster XL Evo (883/1100/1200) | 1986-1994 |
| Harley-Davidson | Sportster XLH/XL1200 | 1986-1994 |
Frequently Asked Questions
Yes, C9359 fits all 1986-1994 Evolution Sportster models including 883, 1100, and 1200.
Yes, 0.040" MLS vs. stock paper gasket ~0.030". Check piston-to-valve clearance for high-comp builds.
Cometic MLS gaskets are designed to seal dry, but light sealant on edges can help on rough surfaces.
Yes, available in various thicknesses; confirm bore size matches your 87mm Evo.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- head bolt kit
Pro Tips
- Clean cylinder head and block surfaces meticulously
- Use Cometic sealant on both sides if needed
- Torque in criss-cross pattern to spec (typically 35-45 ft-lbs)
Common Mistakes to Avoid
- Not cleaning surfaces thoroughly
- Incorrect torque sequence
- Reusing old head bolts
Comparison vs Stock/OEM
MLS construction vs. stock composite/paper gasket
Improvements
- Superior heat resistance
- No warping or blowing
- Better for high-compression and boosted applications
Considerations
- Requires flat surfaces; more expensive
Durability & Warranty
Expected Lifespan
Engine life (100,000+ miles if installed properly)
Warranty
1 year Cometic manufacturer warranty
Maintenance
Inspect during top-end service; no routine maintenance needed
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