Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Gaskets and Seals› Engine Gaskets and Seals
Cometic Gasket
Cometic Harley-Davidson 99-Up 3 7/8in Big Bore FltS Only Comp. Mtr Kit
SKU: C006 C9806F
Easy — 1–2 hours
Overview
Show original supplier description
Part #: C9806F
Cometic utlizes their in-house dynamometersand engine assembly rooms to ensure quality and reliability
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Cometic Gasket |
| Part Number | C006 C9806F |
Videos
S&S Big Bore Kits and Cylinder Heads for Harley Review at RevZilla.com
DIY Mechanic Tip: How To Remove Gasket Material Faster
Fuel Moto 95" Big Bore Kit with Wood TW-222-1 Camshaft for Harley-Davidson Twin Cam Motorcycle
Cometic Gaskets presented by J&P Cycles.
How to Reassemble Top End Harley Twin-Cam (99-17)
Review and Install of the Cometic Gasket for The Harley Primary Cover.
High Compression Harley M8 124 128 big bore cylinder kits by Cycle Solutions
95" Big Bore Kit on Harley Twin Cam Install
How-To: Leaky Rocker Box Gasket Fix on Harley-Davidson Sportster
Harley Evo's Can Make Power, Twin Cams Shouldn't Have all the Fun
Reviewing Cometic's MLX Head Gaskets
Harley Davidson Exhaust Gasket! How to install.
James Gaskets Product Review | Fix My Hog
HOW TO CHOOSE A HEAD GASKET FOR A HARLEY EVO EVOLUTION MOTOR ENGINE - GASKETS IN STOCK
Back to Basics: Evo Sportster Rocker Box Gasket Service
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy