BLAST LED 40 SERIES GO KART TORQUE CONVERTER 1" DRIVER and DRIVEN FREE BELT 203788 COMBO Replaces COMET 203015A (7/8" DRIVEN CLUTCH 3/16" KEY) 1" 40 Series GO KART TORQUE CONVERTER DRIVEN DRIVER CLUTCH PULLEY SET KIT FREE BELT 203788 COMET 40D WORKS WITH 8-18HP ENGINES FITs ALL ENGINES WITH A 1" SHAFT 1/4" KEYWAY DRIVEN CLUTCH HAS 7-1/2" OD, 7/8" BORE 3/16" KEY; 7/8" WIDE X 36 25/32" Cogged & 36 25/32" OD - fits center to center distance on the pulleys 9 3/4" apart. REPLACES OEM Part Numbers:209133A, 209133, 2432, 203015A, 203015