
The Gates straight coolant hose for 2003–2007 Peterbilt 379 with Caterpillar C15 engines is a lower engine-to-pipe replacement offered as a two-ply straight hose. It restores the lower coolant pathway and provides a direct-fit replacement in heavy-duty cooling systems. Use this hose during routine cooling system service to return proper routing and dependable flow for supported Peterbilt applications.
Gates 03-07 Peterbilt 379 Caterpillar C15 Diesel Lower - Eng. To Pipe Straight Coolant Hose (2-Ply)