BARTOO Transmission Oil Cooler Kit 5/16" Universal 4-Pass Aluminum (Silver) — Compact High-Efficiency Tube-and-Fin, 145 psi

If you drive a modified street car, tow frequently, or take your vehicle on spirited rides, transmission fluid can run hotter than optimal. This universal cooler provides an additional cooling path for automatic transmission fluid (ATF), helping heat move from the fluid into the airstream with a high-efficiency turbulators design and tube-and-fin construction. The kit is compact (13.58" × 5" × 0.75") and built from T-6061 aluminum to deliver good thermal conductivity and corrosion resistance while supporting up to 145 psi working pressure.

How does this cooler lower transmission oil temperature?

The 4-pass layout forces fluid through multiple channels so heat transfers more effectively from the ATF to the aluminum tubes and fins. Air traveling across the fins then carries heat away, reducing the temperature of the returning fluid. Internal turbulators increase fluid turbulence, improving heat exchange without adding significant backpressure.

• Four-pass tube-and-fin flow path maximizes surface contact with fluid.
• Turbulators inside each tube create turbulent flow for better heat transfer.
• Aluminum construction quickly dissipates heat into the surrounding air.

Will this cooler fit my vehicle and how do I install it?

This cooler is designed as a universal unit for systems with 5/16" (8mm) transmission cooler lines. Before buying, measure your existing line inner diameter and available mounting space; the unit is compact but needs adequate airflow and clearance. Installation is straightforward: mount where airflow is good, connect with the supplied hose and clamps, and secure using the included brackets and foam pads to avoid vibration contact.

• Fits transmissions with 5/16" (8mm) cooler lines—measure first.
• Includes hose, hose clamps, mounting rods, clips, and foam pads for a full install.
• Recommended placement: unobstructed airflow, away from debris and heat sources.

What are the cooler's materials, limits and durability expectations?

The core is machined from T-6061 aluminum alloy for balanced weight, conductivity, and resistance to corrosion. Rated working pressure is 145 psi and the operational temperature window spans -40°F to 257°F, suitable for most automotive conditions excluding extreme industrial use. The slim profile helps fit in tight spaces while the tube-and-fin fins are designed to withstand typical road vibration when mounted properly.

• T-6061 aluminum core for effective thermal transfer and corrosion resistance.
• Working pressure: 145 psi; temperature range: -40°F to 257°F.
• Compact dimensions: 13.58" × 5" × 0.75" for tight installs.

What comes in the package and what additional parts might I need?

The kit arrives with everything required for a basic installation: the cooler, a 5/16" (8mm) hose, hose clamps, mounting rods, foam pads, mounting clips, and an Insta-dapt adapter for smoother hose transitions. Depending on your vehicle, you may need basic hand tools, additional hose length, or extra brackets if your intended mounting point differs from standard locations.

• Included: transmission cooler, 5/16" hose, clamps, mounting rods, foam pads, clips, and Insta-dapt adapter.
• Suggested extras: basic hand tools, thread sealant if required, or longer hose for remote mounting.
• Mount where airflow is best and keep away from debris and road spray for longevity.

Who is this for: The BARTOO Universal 5/16" Transmission Oil Cooler Kit is aimed at car owners who need an economical, easy-to-fit cooling upgrade for automatic transmissions—especially modified street vehicles, weekend track cars, light towing rigs, and anyone wanting to reduce transmission oil temperatures without complex plumbing. If your vehicle uses 5/16" cooler lines and you have a reasonable mounting location with airflow, this compact aluminum cooler offers a practical way to improve thermal management and help maintain transmission operating conditions during demanding use.