Peterbilt 587 Transmission Coolers - Keep Your Truck Running Cool and Efficient The Peterbilt 587 is a heavy-duty semi-truck known for its rugged performance and reliability. At the heart of this workhorse is the transmission, which requires proper cooling to operate efficiently and prevent overheating. Upgrade your Peterbilt 587 with a high-quality transmission cooler to maximize its power and longevity. These coolers come in a range of sizes and configurations to fit your specific needs, ensuring your truck maintains ideal operating temperatures even under the toughest conditions. With a focus on quality and durability, Peterbilt 587 transmission coolers help you get the job done without worry, delivering the dependable performance you demand from your semi-truck.