The Cometic C9855F Complete EST Gasket Kit is engineered for Harley-Davidson Evo Sportster models from 1991 and later. Designed as a comprehensive overhaul solution, this kit includes the gaskets, seals, washers, and O-rings needed to support a complete engine rebuild. It is manufactured for reliable sealing performance in high-performance V-Twin applications and corresponds with the Harley-Davidson original equipment reference 17026-91B.
Cometic’s EST, or Extreme Sealing Technology, combines advanced materials, precise manufacturing processes, and application-specific gasket designs to meet the demands of modern Harley-Davidson engines. The kit includes MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM sealing material. These components help provide dependable sealing across critical engine surfaces while supporting consistent performance and long-term durability.
Feature: Complete gasket, seal, washer, and O-ring coverage for a full Evo Sportster engine overhaul. Feature: MLS head gaskets designed for reliable cylinder-head sealing. Feature: Steel Viton-coated base gaskets for durable sealing at the engine base. Feature: Blue Viton valve stem seals help control oil migration through the valve guides. Feature: AFM material supports dependable sealing in selected engine applications. Feature: Application-specific fitment for Harley-Davidson Evo Sportster models from 1991 and later. Verify the exact year, engine configuration, and original equipment reference before installation.
Features:
- Complete gasket, seal, washer, and O-ring coverage for a full Evo Sportster engine overhaul
- MLS head gaskets designed for reliable cylinder-head sealing
- Steel Viton-coated base gaskets for durable sealing at the engine base
- Blue Viton valve stem seals help control oil migration through the valve guides
- AFM sealing material supports dependable sealing in selected engine applications
- Fits Harley-Davidson Evo Sportster models from 1991 and later
- Cometic EST construction uses application-specific materials and designs for Harley-Davidson V-Twin engines
- Manufacturer part number: C9855F
- Vendor part number: C9855F
- Harley-Davidson original equipment reference: 17026-91B