Make: Kenworth Mileage: 536,521 Mi Year: 2011 VIN Number: 286737 Condition: Used Unit 50864 (114697) listed by iSellPro, for sale by Wisconsin Kenworth Madison - 2011 KENWORTH T660 TANDEM AXLE SLEEPER FOR SALE IN WISCONSIN :: - KENWORTH T660 for Sale Engine: CUMMINS ISX 450 HP Transmission: 10 Spd. Axles: Tandem Suspension: AG 380 Rear Ratio: 3.55