Gaskets and Seals› Engine Gaskets and Seals

Cometic Gasket

Cometic 84-91 Harley-Davidson Ebo Big Twin Top End Gasket Kit w/ .030in Head Gasket

$140.45

SKU: C006 C9747-030

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Special Order
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Cometic Top End Gasket - EST C9747 is a gasket kit designed for Big Twin engines. It features embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber material for extreme sealing. The head gasket material helps dissipate heat to eliminate hot spots and prevent gasket failure. This set includes all necessary gaskets, seals, and O-rings for a top-end rebuild from the cylinder base upward.

Fitment

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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.

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Specifications

BrandCometic Gasket
Part NumberC006 C9747-030

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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