COMETIC SKU: 68-9628

Cometic Base Gasket with O-Ring 10-Pack - Harley Evo Big Twin & Twin Cam

$22.02
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About Cometic

Cometic Gasket manufactures multi-layer steel head gaskets and complete gasket kits in Concord, Ohio. On a built V-twin running higher compression or a big-bore kit, the MLS head gasket is what keeps the top end sealed — which is why Cometic is the default spec on so many engine builds.

This Cometic Evo Big Twin/Twin Cam base gasket with O-ring seal is sold in a convenient 10-pack, making it ideal for engine rebuilds and top-end service. It's a direct replacement for Harley-Davidson and Indian V-twin engines requiring the OE# 11256 gasket, ensuring a precise and leak-free seal.

Why riders pick this

  • Base gasket with O-ring seal for secure fit
  • Direct OEM replacement for Harley OE# 11256
  • Fits Harley Evo Big Twin and Twin Cam engines
  • Prevents oil leaks at the cylinder base
  • Value 10-pack for engine rebuilds and service

When you're diving into the top-end of your Evolution Big Twin or Twin Cam engine, a reliable base gasket is crucial for preventing oil leaks and maintaining proper compression. This Cometic 10-pack provides high-quality gaskets with an integrated O-ring seal, engineered to meet or exceed OEM specifications. You can trust these gaskets to withstand the demanding conditions within your V-twin, ensuring a long-lasting and secure seal.

Critical Sealing for Engine Rebuilds

  • Features an integrated O-ring seal for superior leak prevention
  • Direct OEM replacement for Harley OE# 11256
  • Designed for Evolution Big Twin and Twin Cam engines
  • Durable construction for reliable, long-term performance
  • Convenient 10-pack for shops or multiple engine projects

Build with Confidence and Precision

Every engine builder knows the importance of proper sealing. This Cometic base gasket 10-pack ensures you have the right components on hand for multiple cylinder installations or rebuilds. By using a fresh, high-quality gasket, you eliminate potential leak points and lay the foundation for a strong, reliable engine. Don't cut corners on critical engine components; choose Cometic for peace of mind.

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C9628
  • UPC: 191070018009
  • Quantity: 10 per pack
  • Length: 3.8 in
  • Width: 5.7 in
  • Height: 0.45 in
  • Weight: 0.01 lbs

Common questions

What specific Harley-Davidson engines does this base gasket fit?

This gasket is designed to fit Harley-Davidson Evolution Big Twin and Twin Cam V-twin engines. It cross-references to Harley OEM part number 11256. Always confirm your engine type and model using our Shop by Bike tool before ordering.

Why are these base gaskets sold in 10-packs?

The 10-pack quantity is intended for professional shops, technicians, or individuals who frequently service or rebuild multiple engines. It ensures you always have a fresh, high-quality gasket available when needed.

Is this Cometic gasket equivalent to the Harley OEM gasket?

Yes, Cometic manufactures this base gasket to OEM specifications, making it a direct replacement for Harley-Davidson OE# 11256, ensuring comparable fitment and sealing performance.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDCometic
TYPEGaskets/Seals
SKU68-9628
WEIGHT0.01 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.71
14 RATINGS
5★ 11
4★ 2
3★ 1
2★ 0
1★ 0
✓ VERIFIED
Apr 1, 2024

keeps them lookin shiny

keeps the oil on the right side

— Frank N
✓ VERIFIED
Dec 4, 2023

Easy to install. Good quality and price. Does what it is supposed to do

— Brendan S
✓ VERIFIED
Apr 9, 2019

Very good quality/value for the price, I would buy them again.

— Anonymous
✓ VERIFIED
May 1, 2016

Good gasket, I like these because they are the same thickness as factory, and do not change the end play on the cam and breather

— Anonymous
✓ VERIFIED
Apr 29, 2015

Decent gasket. Sticks out of the nosecone cover a bit at the top as it doesn't follow the nose cone shape precisely. Seals well.

— Anonymous
✓ VERIFIED
Jun 22, 2014

easy to replace just like oem

— Anonymous