2009, KW T800, Cummins ISX550, 18 speed 1850TQ, .. Blew apart in about 5 miles and 40 minutes mostly idleing. We installed an Eaton dual plate 6 button, clutch 15.5" 2050Tq rating. Drove 4 miles hooked A Peterbilt to tow to Cummins for engine work, talked to c... Login to read more.