Cometic Twin Cam EST Gasket Kit — Harley-Davidson Softail Heritage Classic, Softail Fat Boy, Road King (1999-2017)

Cometic Twin Cam EST gasket kit containing all gaskets, seals, washers, and O-rings needed for a complete engine overhaul on Harley-Davidson Twin Cam models. Features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals engineered for high-performance V-Twin engines.

Features

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

Specifications

• Brand: Cometic
• Manufacturer Part #: C9951
• Length: 8.89 in
• Width: 7.4 in
• Height: 2.04 in
• Weight: 0.05 lbs

Fitment

Fits Harley-Davidson Twin Cam EST models. Verify your specific engine code before ordering to ensure compatibility.

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 AFM material components.

Will this fit my Twin Cam engine?

This kit is designed for Twin Cam EST engines. Confirm your engine designation matches before ordering, as different Twin Cam generations use different gasket sets.

Do I need any additional seals or gaskets beyond what's in this kit?

This is a complete overhaul kit, so all major gaskets and seals are included. Minor hose clamps or fasteners may need sourcing separately.

What makes Cometic gaskets different from OEM?

Cometic uses advanced materials like MLS head gaskets and Viton seals designed to handle modern high-performance V-Twin engines with improved durability and sealing.