Gaskets and Seals› O-rings, Grommets and Vacuum Caps
Cometic Gasket
Cometic Harley-Davidson Twin Cam Support Plate Plug O-Ring 1999-06, 10Pk,
SKU: C006 C9631
Beginner — under 30 min
Description
Part #: C9631
Today's lightweight engines are producing more horsepower, higher cylinder pressures, clamp loads and extreme temperatures. Our commitment is to provide innovative, quality gaskets while maximizing your engine's power and performance. Cometic's gaskets are proudly made in the USA with materials manufactured on American soil. We are constantly updating and adding models to our ever growing library of gaskets for Powersports, Street Bikes, Snowmobiles, Harley-Davidson and V-Twin applications.
Support Plate Plug O-Ring | 10 Pack
MIA's Description
Fitment
Fitment Guaranteed
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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 C9631 |
Videos
Review and Install of the Cometic Gasket for The Harley Primary Cover.
Harley Davidson Rocker Box Gaskets Replacement Made EASY
James Gasket Kits Buyers Guide for Harley at RevZilla.com
Reviewing Cometic's MLX Head Gaskets
How To Install A Rocker Housing Gasket On A Harley-Davidson-DIY
Fire Ring Head Gasket Sealing System Explained
Why You NEVER ATTEMPT To Use RTV Gasket Maker Without Doing This First!!
Choosing The Right Head Gasket For Your Performance Engine Application
Performance Head Gaskets EXPLAINED!
A New Solution To Cylinder Sealing? SCE Vulcan Cut-Ring Head Gasket Overview
Buy with Confidence
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.
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