The Peterbilt 37 Series Yellow Powder Coated Steel Upper Coolant Tube (OEM Number PC0706508) is a durable and practical solution for your Peterbilt 37 Series models. Made with steel construction and a yellow powder coated finish, this coolant tube is built to last. It fits most Peterbilt 37 Series models and can be used as a replacement for both OEM and aftermarket parts. With its high-quality construction and reliable performance, this coolant tube is a must-have for any Peterbilt owner.