Upgrade your Peterbilt 357, 359, 377, 378, or 379 with this durable stainless steel lower coolant tube, designed to fit most models with Cummins ISX engines. Constructed from 304 stainless steel, this tube is built to last and is sold individually. It is a practical and reliable replacement for OEM number 07-07088, offering a perfect fit and long-lasting performance. Whether for OEM or aftermarket use, this lower coolant tube is a valuable addition to your Peterbilt truck, ensuring efficient coolant flow and engine performance.