Rear Seat Belt is a direct fit for the following:

2003-2008 Chevrolet Express 1500
2003-2008 Chevrolet Express 2500
2003-2008 Chevrolet Express 3500
2003-2008 GMC Savana 1500
2003-2008 GMC Savana 2500
2003-2008 GMC Savana 3500

Genuine GM Part Number: 19148943