Cometic Evo Sportster EST Gasket Kit - Oe#17027-04b — Harley-Davidson Sportster 1200 Custom, Forty-Eight, Roadster (2007-2019)

Cometic Evo Sportster EST Gasket Kit is a complete engine overhaul gasket set engineered with Extreme Sealing Technology (EST) for V-twin motorcycles. Includes MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material for reliable sealing across all critical engine surfaces.

Features

• MLS head gaskets
• Steel Viton-coated base gaskets
• Blue Viton valve stem seals
• AFM material gaskets
• Complete overhaul kit — all gaskets, seals, washers, and o-rings included

Specifications

• Brand: Cometic
• Manufacturer Part #: C9176
• OE Number: 17027-04B
• Length: 13.4 in
• Width: 22.9 in
• Height: 1.9 in
• Weight: 1.735 lbs

Fitment

Fits Evo Sportster and compatible V-twin motorcycle engines.

Frequently Asked Questions

What's included in this gasket kit?

Every gasket, seal, washer, and o-ring needed for a complete engine overhaul — head gaskets, base gaskets, valve stem seals, and more.

What is EST (Extreme Sealing Technology)?

Cometic's EST technology combines MLS head gaskets, Viton coatings, and AFM materials to provide superior sealing under high heat and pressure.

Can I use this kit for a partial rebuild?

Yes — the kit includes both top-end and complete motor components, so you can use only what you need for your rebuild scope.

Is this an OEM gasket kit?

No — this is a Cometic aftermarket kit engineered to OE specifications with upgraded sealing materials for improved durability.