Fleece Performance Transmission

Fleece Performance Transmission cooler lines are transmission oil cooler hose assemblies (also called transmission cooler lines or transmission line kits) for diesel trucks running Allison and Cummins-era automatic transmissions. They replace the factory lines that carry transmission fluid between the transmission and the cooler.

Key Features:

• Designed to carry transmission fluid to and from the cooler for better heat management
• Made as direct-replacement assemblies for the original factory lines
• Suited to towing, hauling and high-horsepower diesel applications
• Each part number in the line is built for its own transmission and engine combination

Fleece Performance is known for diesel performance parts. This product line gives you a durable replacement for stock cooler lines. Choose the variant that matches your truck and transmission.