14363 (743-20-30) drive belt. Replaces the American Sportworks (Manco) 14363, the Carter Brothers 513-1046, 5131046 G759, Comet 203581, 203581A, 203581B, 203581C, and the Hammerhead M150-1033000. Very common size for go-karts, ATVs, & street scooters with GY6 engines. 29-1/4″ overall length. 3/4″ width. 30 degree angle. Product Description The 14363 drive belt for 150cc American Sportworks go-karts is a replacement for the Manco belt. Our 14363 go-kart belt replaces the American Sportworks (Manco) 14363, the Carter Brothers 513-1046, 5131046 G759, Comet 203581, 203581A, 203581B, 203581C, and the Hammerhead M150-1033000. The 14363 is also known as the 743-20-30. In addition to being a great go-kart belt, this handy item works on most street-legal motor scooters that use the ubiquitous 125cc-150cc 4-stroke GY6 scooter engines. As well as go-karts and street scooters, these GY6 engines powered numerous ATVs, dirt bikes, dune buggies, and a plethora of other powersports fun-machines.