C9186 EST motor gasket kit. 3-7/8" bore

For Dyna riders performing a full engine teardown, this Cometic EST motor gasket kit fits 2006 to 2017 103 cubic inch models with a 3-7/8 inch bore. This comprehensive set includes all gaskets, seals, and O-rings for the entire motor, including the primary gaskets. It features .030 inch thick Multi-Layer Steel head gaskets and .020 inch Single-Layer Steel base and rocker gaskets coated in high-temperature Viton rubber. The kit also provides Viton valve seals and 1999 to 2010 style breather gaskets. It is sold as a set and is engineered to provide a superior seal that won't weep or fail under high operating temperatures.