Part # 3C34-4K145-BCC or 3C344K145BCC. Ford F250 & F350 Super Duty 4WD with Automatic Transmission, Crew Cab, 6.0L Diesel, 8" Bed & 172.4" Wheelbase Rear Drive Shaft Assembly. Fits various Years. Completely new shaft assembly from end to end fabricated with genuine Spicer components. This shaft assembly has a center support bearing and a 4-bolt flange at the transmission and at the rear differential. Full 12 month unlimited mileage warranty & Free UPS/FEDEX ground shipping to continental USA 48 states is included in the purchase price. Buy with confidence with our secure encrypted checkout. PayPal, Visa, MasterCard or Discover Card accepted.