Kelch 7J201153 Gravely 8000 & 800 Quarter Turn Gas Cap with Gauge This New Quarter Turn Gas Cap Is A Direct Replacement for Gravely OEM Part Number: 021415 These Quarter Turn Gas Caps Work On The Gravely 800 & 8000 Series Tractors This Gas Cap Is 12 1/2" Long, You Will Need A Tank Depth Of At Least 12 3/4" For It To Work These Quarter Turn Gas Caps Work On Metal Tanks, These Are Not Threaded Gas Caps Kelch Gas Caps Are Made In The U.S.A.