Peterbilt 388 Transmission Coolers provide essential cooling for the transmission system in Peterbilt 388 semi-trucks. These highly durable and efficient coolers help maintain optimal transmission temperatures, extending the life of critical components and ensuring smooth, reliable performance. Featuring robust construction, these coolers can withstand the demanding conditions of heavy-duty trucking applications. Whether you're upgrading an existing Peterbilt 388 or building a custom rig, Peterbilt 388 Transmission Coolers are a must-have accessory to keep your truck's powertrain running at peak efficiency. With a focus on quality, these coolers deliver the dependable cooling you need to tackle any job on the road.