ACDelco 29544804 Allison 1000 4WD Rear Adapter Housing, 2001-2007 GM 2500HD, GMC Sierra Chevrolet Silverado 8.1LPart Number: 29544804
GMC Sierra Chevrolet Silverado 2500HD 8.1L 2001, 2002, 2003, 2004, 2005, 2006, 2007
Replace your cracked or broken rear extension housing. Updated version with thicker webbing in critical areas. Always be sure to carefully inspect the drive shaft and U joints if you have a damaged extension housing. Driveline vibration is the most common reason of failure on this item.