This replacement fuel return line is precision-engineered to match the fit and design of the original equipment return line on specific vehicles. It is made of durable materials specifically to withstand exposure to fuel and extreme temperatures. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [chevrolet silverado 2500 hd: 2001, 2002, 2003, 2004] - [chevrolet silverado 3500: 2001, 2002, 2003, 2004] - [gmc sierra 2500 hd: 2001, 2002, 2003, 2004] - [gmc sierra 3500: 2001, 2002, 2003, 2004].