Fits Briggs & Stratton 2-4 HP engines. Replaces OE# 298425 and 493982. 1-1/2" diameter. Vented, high dome cap with liner. Fits Briggs & Stratton 2-4 HP engines Replaces OE# 298425 and 493982 1-1/2" diameter Vented, high dome cap with liner. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov