Flex-A-Lite 45251V TransLife Heavy-Duty Transmission Oil Cooler Kit with Cooler Guard

The Flex-A-Lite 45251V TransLife transmission oil cooler kit is engineered for extreme heavy-duty towing applications rated up to 25,000 lbs. GVW. Keeping automatic transmission fluid cool is one of the most effective ways to extend drivetrain life — a 20-degree reduction in fluid temperature can significantly extend the life of automatic transmission components, deliver more consistent shifts, and prevent costly heat-related damage under the most demanding towing and hauling conditions.

This kit features a large 7 x 21-inch cooler core and ships complete with all necessary hardware, hose, and fittings so you can get it installed without extra trips to the parts store. The included cooler guard protects the core from road debris and damage. Fittings are 1/2 in. female NPT, and the turbulator internal design promotes superior fluid mixing for maximum heat transfer efficiency.

Key Features:

• Extreme Heavy-Duty Rating — Designed for applications up to 25,000 lbs. GVW
• Large 7 x 21-Inch Cooler Core — High-capacity design for maximum cooling performance
• 1/2 in. Female NPT Fittings — Secure, leak-free connections
• Billet Barbed Fittings — More secure hose connections compared to standard fittings
• High-Efficiency Turbulator Design — Superior internal fluid mixing for improved heat transfer
• Cooler Guard Included — Protects the cooler core from road debris
• Complete Kit — Includes all hardware, hose, and fittings
• Multilingual Instructions — Easy-to-follow installation guide in English, French, and Spanish

The Flex-A-Lite TransLife line has long been a trusted solution for protecting automatic transmissions in towing, hauling, and performance applications. Select the appropriate cooler size based on your vehicle's GVW rating and severity of service for optimal protection.