Cometic C9952 Complete EST Gasket Kit for Harley-Davidson Evolution Sportster

The Cometic C9952 Complete EST (Extreme Sealing Technology) Gasket Kit provides a comprehensive solution for rebuilding Harley-Davidson Evolution Sportster engines with 3.500" bore. This professional-grade kit includes every gasket, seal, washer, and O-ring needed for a complete engine overhaul, eliminating the guesswork and ensuring you have all the components required for a leak-free rebuild.

Advanced EST Technology Features:

• Multi-Layer Steel (MLS) head gaskets for superior sealing under high compression
• Steel Viton-coated base gaskets for excellent heat and oil resistance
• Blue Viton valve stem seals for long-lasting performance
• Aluminum Foam Material (AFM) race-style exhaust gaskets that won't fray into ports
• One-piece Evolution rocker box base gasket made from .020" thick embossed Viton-coated steel

Complete Kit Includes:

• Base gaskets, head gaskets, and cylinder case gaskets
• Primary, derby, and inspection cover gaskets
• Rocker box gaskets (inner and outer)
• Oil pan and pump gaskets
• Crankcase, transmission, and shifter shaft oil seals
• Carburetor and intake manifold gaskets
• Multiple O-rings, hat seals, and stud washers

Designed for builders who demand the best, this complete gasket set uses application-specific materials chosen for optimal performance in each sealing surface. Cometic's proven gasket technology has been validated through rigorous testing on both street and track applications. Made in the USA with a focus on quality and long-term value. OE replacement for Harley-Davidson part number 17027-04.