Fleece Performance Transmission Cooler & Line Kit

2013–2018 Ram 2500 / 3500 6.7L Diesel

Part #: FPE-TC-CUMM-1318

Overview

The Fleece Performance Transmission Cooler & Line Kit is a premium upgrade designed specifically for 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine and 68RFE transmission. This kit addresses one of the most critical aspects of heavy-duty towing and hauling — transmission temperature control. By significantly improving heat rejection, it helps maintain optimal transmission operating temperatures, reducing the risk of overheating and extending the life of your transmission.

Ideal for Ram owners who demand reliability and durability under heavy loads, this kit ensures your truck can tow with confidence, even in the most demanding conditions. It offers a direct-fit solution that replaces the factory cooler and lines without any cutting or splicing, making it a straightforward upgrade for both professional installers and experienced DIY enthusiasts.

Key Features

Engineered to deliver superior cooling performance and durability, this transmission cooler and line kit includes:

• Drop-in replacement for the factory transmission cooler with no modifications required
• Massive 2X increase in heat rejection compared to the stock transmission cooler
• All-new heavy-duty transmission lines designed to withstand high pressure and temperature
• AN fittings for a secure, leak-free installation
• 100% pressure and leak tested to ensure reliability and peace of mind
• Specifically designed for 68RFE transmissions found in 2013–2018 Ram 2500 and 3500 6.7L Diesel trucks
• Improves transmission fluid cooling efficiency, helping prevent premature transmission wear
• Enhances towing capability by maintaining stable transmission temperatures under load

Construction & Design

The transmission cooler is constructed from high-quality materials engineered for maximum heat dissipation and durability. The cooler core features an optimized fin design that maximizes airflow and thermal transfer, effectively doubling the heat rejection capacity over the OEM unit. The heavy-duty transmission lines are crafted from robust materials with AN fittings that provide a secure, vibration-resistant connection, eliminating leaks and ensuring long-term reliability.

Fleece Performance’s engineering team designed this kit from the ground up to meet the demanding requirements of heavy-duty diesel trucks, focusing on both performance and ease of installation. The result is a rugged, efficient cooling system that integrates seamlessly with your Ram’s existing transmission setup.

Installation & Fitment

This kit is a direct-fit replacement for the factory transmission cooler and lines on 2013–2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine and 68RFE transmission. Installation requires no cutting, splicing, or modifications to the original equipment lines, making it a clean and straightforward upgrade. All components are designed to fit precisely, ensuring a hassle-free installation process that can be completed with basic hand tools.

Whether you’re upgrading your truck for heavy towing or simply looking to improve transmission longevity, this kit provides a reliable and efficient cooling solution that integrates perfectly with your vehicle.

What's Included

• High-performance transmission cooler core
• Heavy-duty transmission lines with AN fittings
• All necessary mounting hardware
• Installation instructions

Ideal For

This transmission cooler and line kit is ideal for Ram 2500 and 3500 owners who regularly tow heavy trailers, haul large payloads, or operate their trucks in demanding environments where transmission temperatures can quickly rise. It is perfect for diesel enthusiasts seeking to enhance their truck’s reliability and transmission lifespan without complicated modifications.