Cometic Base gasket Fits: > 99-17 Twin Cam 110"
- Front & rear gasket for one engine. .020" thick SLS (Single Layer Steel), a non-embossed steel core with a .001" thick coating of heat resistant nitrile rubber on both sides.
- Bore Size 4,000"
- Fits: > 99-17 Twin Cam 110" (excl. 14-16 Twin Cooled). With 4" bore 110" engines