Yoscam 40 Series Go Kart Torque Converter 3/4" Driven 1" Driver Clutch Pulley Set Kit Comet 40D Clutch bore : 3/4" & 1"; 1" 40 series go kart torque converter driven driver clutch pulley set kit comet 40D Unit replaces:Comet: 209133A, 209133, 209139A, 209139, 209151A, 209151, 2432, 203015A, 203015 This Small engine Torque Converter clutches are heavily used in riding lawnmowers, small tractors, g he Model 40 were designed for recreational vehicles such as Go Karts, Mini Bikes, ATV's, LTV's and E