The Cometic C9953 Complete EST Gasket Kit is designed for 2004 Harley-Davidson Sportster Evolution models requiring a complete engine overhaul gasket set. Built using Cometic’s Extreme Sealing Technology (EST), this kit provides the sealing performance and component coverage needed for dependable service on high-performance V-Twin engines. It is an ideal replacement for Harley-Davidson original equipment part number 17027-04 where applicable.
This complete gasket kit includes the gaskets, seals, washers, and O-rings needed to service the engine, helping simplify installation and reduce the need to source individual sealing components. The kit incorporates MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM sealing material for durable performance across critical engine sealing points.
Cometic continuously develops its gasket materials, manufacturing processes, and designs to meet the demands of modern V-Twin engines. The C9953 kit is intended for fitment on 2004 Harley-Davidson Sportster Evolution applications; verify the exact model, engine configuration, and original equipment part number before installation. Manufacturer part number: C9953. Vendor part number: C9953.
Features:
- Brand: Cometic
- Manufacturer: Cometic Gasket
- Manufacturer part number: C9953
- Vendor part number: C9953
- Fitment: 2004 Harley-Davidson Sportster Evolution models
- Reference part number: Harley-Davidson 17027-04
- Kit type: Complete EST engine gasket kit
- Technology: Extreme Sealing Technology for demanding V-Twin engine applications
- Included components: Gaskets, seals, washers, and O-rings for a complete overhaul
- Head gaskets: Multi-layer steel construction
- Base gaskets: Steel with Viton coating
- Valve stem seals: Blue Viton material
- Additional sealing material: AFM components