HTRACING Transmission Cooler 2-Pass Tube-and-Fin Universal 5/16" Black — Aluminum Core, Copper Tubes

HTRACING's 2-pass tube-and-fin transmission cooler is a universal external cooler designed to lower transmission fluid temperature and help protect automatic transmissions under heavy load.

This compact kit includes a lightweight T-6061 aluminum cooler with copper tubing, embossed turbulators to maximize heat transfer, and all mounting hardware and a 5-foot 5/16" hose for quick installation. It’s built to resist corrosion and repeated thermal cycles while fitting a wide range of cars and light trucks. The black finish provides a low-profile, durable look that blends with front-end components.

How does the 2-pass tube-and-fin design improve cooling?

The 2-pass flow forces fluid to travel through two separate channels, increasing contact time with the copper tubes and aluminum fins so more heat is shed to ambient air. Embossed turbulators agitate the fluid inside the tubes, breaking laminar flow and improving thermal exchange without adding electrical components.

• Two-pass routing for extended thermal contact.
• Copper tubing expanded into aluminum fins for efficient conduction.
• Embossed turbulators to disrupt fluid flow and boost heat transfer.
• Extruded plastic heat-sink shields to protect fins from debris.

Will this cooler fit my vehicle and how hard is it to install?

This cooler is a universal fit intended for many compact cars, SUVs and light trucks using 5/16" lines or hose adapters. The kit includes a radiator insta-dapt, 5 ft of 5/16" hose, clamps, mounting rods, clips and foam pads so most installations require basic hand tools and moderate DIY skill.

• Includes 5/16" (8mm) hose and Insta-Dapt radiator adapter for common OEM fittings.
• Four mounting rods, clips and foam pads for secure installation and isolation.
• Hose rated to 145 psi and -40°F to 176°F working temperature for durability.
• Installation time typically 1–2 hours for experienced DIYers.

What materials and durability features does the cooler offer?

The core combines durable T-6061 aluminum with copper tubing mechanically expanded into the fins for strong thermal contact and corrosion resistance. The black anodized finish helps protect the aluminum, while included heat shields and foam pads reduce stone and debris damage when mounted behind the grille.

• T-6061 aluminum core resists harsh environments and thermal cycling.
• Copper tubing for superior heat conduction into aluminum fins.
• Black coating improves corrosion resistance and low-profile appearance.
• Extruded plastic shields and foam pads protect fins from road hazards.

What improvements can I realistically expect after installing this cooler?

The external cooler helps lower and stabilize transmission fluid temperatures during towing, heavy city traffic, or spirited driving, which can reduce thermal stress on transmission components and help preserve shifting performance. Results vary based on vehicle load, airflow, and original transmission condition.

• Lower peak fluid temperatures under heavy load.
• More consistent operating temperatures during long or hard driving.
• Potentially improved shift feel compared with overheated fluid.
• Recommended as preventive protection for high-stress use.

Who is this for? The HTRACING 2-pass tube-and-fin transmission cooler is aimed at vehicle owners who tow, carry heavy loads, or do frequent stop-and-go driving and want an affordable, bolt-on way to help protect their automatic transmission. It’s also a practical upgrade for performance-minded drivers who need extra cooling capacity without complex lines or pumps. If your vehicle uses overdrive-specific cooling strategies or has limited front-end space, check fitment and flow direction before ordering.