Your cart is empty
Start ShoppingCOMETIC C9688 Sportster Head/Base Gasket - MLS Multi-Layer Steel Gasket for High-Performance Engines
Fits your
May not fit your
Description
Upgrade your Sportster engine's reliability with COMETIC's C9688 MLS head/base gasket. Engineered for high-performance applications, this durable gasket ensures perfect sealing and long-lasting power delivery for motorcycle riders.
Key Features
- Multi-Layer Steel (MLS) Construction: Superior sealing capabilities for high-temperature and high-pressure engine environments
- 0.040 in. Thickness (1.02mm): Optimal compression and heat dissipation for enhanced engine efficiency
- 3.875 in. Bore (98.43mm): Precision-engineered fit for Sportster engines
- Head Gasket Dimensions: Perfectly sized for Sportster engine compatibility
- 0.2 lbs Weight: Lightweight yet durable construction for easy installation
Why Choose This Product
COMETIC's C9688 gasket delivers unmatched durability and sealing performance for Sportster engines. The MLS design prevents blow-by and coolant leaks, while precise specifications ensure a perfect fit. Ideal for riders seeking reliable power and long-term engine protection. Whether you're modifying your Sportster or maintaining its performance, this gasket provides peace of mind with its high-quality construction and engineered fit.
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Purchasing is temporarily paused. You can still add items to your cart and check back soon.
Pay in 4 with
or
$0.00 x 4 interest-free
or
$0.00 x 4 interest-free
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$55.99
In Cart
Upgrade your Sportster engine's reliability with COMETIC's C9688 MLS head/base gasket. Engineered for high-performance applications, this durable gasket ensures perfect sealing and long-lasting power delivery for motorcycle riders.
Key Features
- Multi-Layer Steel (MLS) Construction: Superior sealing capabilities for high-temperature and high-pressure engine environments
- 0.040 in. Thickness (1.02mm): Optimal compression and heat dissipation for enhanced engine efficiency
- 3.875 in. Bore (98.43mm): Precision-engineered fit for Sportster engines
- Head Gasket Dimensions: Perfectly sized for Sportster engine compatibility
- 0.2 lbs Weight: Lightweight yet durable construction for easy installation
Why Choose This Product
COMETIC's C9688 gasket delivers unmatched durability and sealing performance for Sportster engines. The MLS design prevents blow-by and coolant leaks, while precise specifications ensure a perfect fit. Ideal for riders seeking reliable power and long-term engine protection. Whether you're modifying your Sportster or maintaining its performance, this gasket provides peace of mind with its high-quality construction and engineered fit.
| SKU | GM6336F26E |
|---|---|
| MPN | C9688 |
| Brand | Cometic |
| Category | Gaskets/Seals |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Sportster XL883, XL1200 | 2004-2017 |
Frequently Asked Questions
Yes, C9688 fits 2004-2017 Sportster XL883/XL1200 models with 3.875" bore.
This is 0.040" MLS; stock is typically 0.060". Use for higher compression builds.
Recommended for optimal compression; check piston-to-valve clearance.
Yes, rated up to 98mm bore; verify your specific bore size.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- head bolt kit
Pro Tips
- Clean mating surfaces meticulously
- Follow Harley torque specs in criss-cross pattern
- Consider new ARP head studs for high compression
Common Mistakes to Avoid
- Not cleaning surfaces thoroughly
- Incorrect torque sequence
- Reusing old head bolts
Comparison vs Stock/OEM
MLS construction vs. stock composite; handles higher pressures and temperatures
Improvements
- Better sealing for high compression
- Increased durability under boost/nitrous
- Reduced chance of blowouts
Considerations
- Requires precise surface prep
- May need head milling
Durability & Warranty
Expected Lifespan
Engine rebuild lifespan (50,000+ miles typical)
Warranty
1 year Cometic manufacturer defect warranty
Maintenance
Inspect during valve adjustments; no specific maintenance required
What Others Are Saying
Reviews from across the web
