Peterbilt 375/377 Transmission Coolers: Ensure optimal performance and longevity for your Peterbilt 375 or 377 with our high-quality transmission coolers. Designed to efficiently regulate temperatures and prevent overheating, these coolers are built to handle the demands of heavy-duty trucking. Featuring durable construction and a compact design, our transmission coolers seamlessly integrate with your Peterbilt's existing systems for a hassle-free installation. Stay cool and confident on the road with the reliable cooling you need to keep your transmission running at peak efficiency.