BRAND NEW KELCH 3 1/2 INCH DIAMETER GAS CAPS MADE PROUDLY IN THE U.S.A. WORKS FOR GRAVELY MOWERS THESE NEW GAS CAPS ARE 3 1/2 INCHES IN DIAMETER, AND 10 INCHES LONG THIS GAS CAP IS KNOWN TO WORK ON MANY ZERO TURN MOWER TANKS THEY WORK PERFECT FOR THE GRAVELY 272H-XZD’S THESE GAS CAPS WORK ON ANY 3 1/2 INCH DIAMETER ZERO TURN FILLER NECK, THAT IS AT LEAST 10 1/2 INCHES DEEP GRAVELY 250-Z SERIES, THE 260 Z SERIES, AND THE 270 Z SERIES OF ZERO TURN MOWERS ALL HAVE THE 3 1/2″ FILLER NECKS ITS CRITICAL YOU MEASURE YOUR TANK DEPTH, AS THERE ARE DIFFERENT TANK DEPTHS ON SOME MODELS MAKE SURE YOUR FUEL TANK IS AT LEAST 10 1/2 INCHES DEEP MEASURE FROM THE TOP OF THE FILLER NECK, STRAIGHT DOWN TO THE TANK BOTTOM PLEASE MEASURE YOUR TANK TO BE SURE OF FITMENT