Ram 3500 Transmission Cooler & Line Kit - Fleece Performance - `13-`18 is a purpose-built transmission cooler and hard-line kit for 6.7L Cummins-equipped Rams from 2013 through 2018. This kit is designed to reduce transmission fluid temperatures under heavy towing, hauling, and high-load driving conditions.

Engineered for durability and direct-fit installation, the Fleece Performance cooler and line kit includes a high-capacity aluminum cooler and pre-bent hard lines to replace factory plumbing. The cooler increases fluid capacity and improves heat rejection compared with stock units, helping maintain transmission operating temperatures during extended towing and hard use. The kit is built to resist corrosion and vibration, and it installs with vehicle-specific brackets and fittings to minimize modification time.

Features

• High-capacity aluminum transmission cooler for improved heat dissipation
• Pre-formed hard lines and fittings for a direct-fit installation
• Corrosion-resistant construction and durable mounting hardware
• Designed specifically for 2013–2018 Ram 2500/3500 6.7L Cummins applications

If you have questions about fitment, installation, or performance expectations, call us directly — we’re happy to help. We offer installation and customization at our two locations in Austin, Texas and the Los Angeles, California area. Contact us at 512-982-9393 (TX) or 562-981-6800 (CA). We install on premises at both locations. If you’re considering purchasing multiple items, please contact us for possible shipping discounts.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov