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Start ShoppingCOMETIC Evo Big Twin Transmission Gasket - MLS Steel with Silicone Beading for 4-Speed
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Description
Ensure flawless performance and leak prevention with COMETIC's premium transmission gasket designed specifically for Evo Big Twin 4-speed transmissions. This advanced gasket combines multi-layer steel construction with silicone beading for maximum sealing reliability and heat resistance.
Key Features
- Multi-Layer Steel (MLS) Construction: Provides exceptional durability and heat resistance for long-term performance in high-stress transmission environments.
- Silicone Beading: Creates a perfect seal around critical transmission components to prevent leaks and ensure optimal fluid retention.
- 0.030" Thickness: Precisely engineered for proper sealing without over-compression, ensuring compatibility with original equipment specifications.
- 4-Speed Big Twin Fitment: Directly manufactured to fit OEM transmission top covers, eliminating installation guesswork and ensuring a perfect fit.
Why Choose This Product
Upgrade your transmission system with a gasket engineered for maximum reliability and performance. The MLS steel construction resists warping and degradation, while silicone beading ensures airtight sealing. This precision-fitted solution reduces maintenance intervals and prevents costly leaks, making it an essential upgrade for riders demanding peak performance from their Big Twin engines.
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Ensure flawless performance and leak prevention with COMETIC's premium transmission gasket designed specifically for Evo Big Twin 4-speed transmissions. This advanced gasket combines multi-layer steel construction with silicone beading for maximum sealing reliability and heat resistance.
Key Features
- Multi-Layer Steel (MLS) Construction: Provides exceptional durability and heat resistance for long-term performance in high-stress transmission environments.
- Silicone Beading: Creates a perfect seal around critical transmission components to prevent leaks and ensure optimal fluid retention.
- 0.030" Thickness: Precisely engineered for proper sealing without over-compression, ensuring compatibility with original equipment specifications.
- 4-Speed Big Twin Fitment: Directly manufactured to fit OEM transmission top covers, eliminating installation guesswork and ensuring a perfect fit.
Why Choose This Product
Upgrade your transmission system with a gasket engineered for maximum reliability and performance. The MLS steel construction resists warping and degradation, while silicone beading ensures airtight sealing. This precision-fitted solution reduces maintenance intervals and prevents costly leaks, making it an essential upgrade for riders demanding peak performance from their Big Twin engines.| SKU | GM66F79A4A |
|---|---|
| MPN | C9264F |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Evo Big Twin 4-Speed | 1980-1986 |
| Harley-Davidson | Evolution Big Twin | 1984-1999 |
Frequently Asked Questions
Yes, fits all 1984-1999 Evolution Big Twin 4-speed transmissions including Softail models.
0.030" thickness - standard replacement thickness for Evo transmissions.
Recommended to use new or like-new bolts. Old bolts can have stretched threads.
This is Cometic's MLS (multi-layer steel) construction for superior sealing.
Installation Guide
Difficulty
Easy
Est. Time
20 min
Tools Required
- Socket set (3/8" drive)
- Torque wrench
- Gasket scraper
- Harley transmission cover bolts
Pro Tips
- Clean surfaces with brake cleaner
- Torque to 10-15 ft-lbs in crisscross pattern
- Apply thin layer of assembly lube to bolt threads
Common Mistakes to Avoid
- Not cleaning mating surfaces thoroughly
- Over-torquing bolts
- Reusing old bolts
Comparison vs Stock/OEM
MLS construction vs paper stock gasket
Improvements
- Superior sealing
- Higher temperature tolerance
- Re-usable multiple times
- No compression set
Considerations
- Slightly higher cost than paper gasket
Durability & Warranty
Expected Lifespan
Indefinite with proper torque - reusable
Warranty
Cometic 1-year warranty
Maintenance
Inspect during transmission service
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