DIESEL ENGINE, 10 SPEED, SLEEPER WITH BED, AND SEATS, 12,000 LBS FRONT AXLE, 40,000 LBS REAR AXLES, AIR SLIDE 5TH WHEEL TANDEM AXLES, AIRLINER SUSPENSION, GVWR 52,000 LBS, 295/75R22.5 ON ALUMINUM, VIN 1FUJA6CK550U87142