This viton base o-ring fits 3-3/4, 3-7/8, and 3.927 inch bore cylinders for 1999-11 Harley-Davidson big twin engines. Two required for an engine. Harley-Davidson part number 11256. Note: All reference to H-D part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D part number shown. S&S Part #: 50-8048
Fitment: Twin Cam 88 and TC 96