Stens 125-322 Gas Cap Replaces MTD 951-3111 Toro 112-0321 Grasshopper 100210 Ariens 01538400 Husqvarna 539 91 43-63 Kees 914363 MTD 751-3111 Bobcat 48587 Inside Diameter 2-inch; Height-5/8-inch Cap vented but not with screw down vent CARB approved tethered cap Not compatible with greater than 10-Percent ethanol fuel