Cometic Evo Sportster EST Gasket Kit - Oe#17026-91b — Harley-Davidson Sportster 1200, Sportster 1200 Custom, Sportster Sport (1991-2003)

Cometic Evo Sportster EST gasket kit with all seals, gaskets, and o-rings needed for a complete engine overhaul. Features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals designed for V-Twin performance.

Features

• MLS head gaskets
• Steel Viton-coated base gaskets
• Blue Viton valve stem seals
• AFM material components
• Complete motor overhaul kit — all gaskets and seals included

Specifications

• Brand: Cometic
• Manufacturer Part #: C9758F
• Length: 22.5 in
• Width: 13.2 in
• Height: 1.8 in
• Weight: 1.8 lbs

Fitment

Fits Harley-Davidson Evo Sportster models with Extreme Sealing Technology (EST) specification.

Frequently Asked Questions

What's included in this kit?

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

Will this fit my Evolution Sportster?

Yes — this kit is engineered for Harley Evo Sportster engines. Verify the OE part number 17026-91B matches your engine before ordering.

What is EST gasket technology?

Extreme Sealing Technology uses MLS head gaskets and Viton-coated steel base gaskets for improved sealing under high heat and pressure.

Is professional installation required?

Gasket kits require engine disassembly and proper torque sequencing. Professional installation is recommended unless you have V-Twin engine experience.