Cometic, EST top end gasket kit. Twin Cam 3-7/8" bore 99-17 95"/103" Twin Cam (excl. Twin Cooled) (NU)

With MLS (Multi-Layer-Steel) .045" thick head gaskets. The SLS (Single-Layer-Steel) cylinder base gaskets and SLS rocker cover gaskets used in these sets are .020" thick and have .001" of high temperature viton rubber coating on both sides. Kit comes with all gaskets seals and o-ring for a complete top end rebuild. Note: Kit comes with 99-04 style valve seals and 99-10 style breather gaskets. 99-17 95"/103" Twin Cam (excl. Twin Cooled) (NU)