EVIL ENERGY 5/16" Transmission Oil Cooler — 4-Pass Aluminum Tube-and-Fin, Black Compact Kit

EVIL ENERGY's 5/16" transmission oil cooler kit is a compact, universal 4-pass aluminum tube-and-fin cooler designed to lower automatic transmission fluid temperatures for improved heat management in most vehicles with 5/16" ID lines.

This compact cooler kit combines a lightweight aluminum tube-and-fin core with durable CPE hose and a black finish to offer a practical way to add extra cooling capacity to cars, trucks and SUVs. At 15.66" × 5" × 0.75", the cooler is small enough to fit tight spaces yet built to handle the pressures and temperatures associated with transmission service. The kit includes mounting hardware and step-by-step instructions so you can position it where airflow is best—usually behind the grille or in front of the radiator—for maximum effect.

How does this cooler reduce transmission fluid temperature?

The cooler uses a four-pass tube-and-fin design that increases the fluid’s exposure to cooling surfaces and airflow. As ATF moves through the internal tubes, heat transfers to the fins and then to the surrounding air, lowering the fluid temperature before it returns to the transmission. Cooler fluid helps the transmission operate closer to intended temperatures and can help reduce thermal strain during heavy towing or stop-and-go driving.

• 4-pass tube-and-fin core improves heat exchange efficiency
• Aluminum alloy core conducts heat quickly and resists corrosion
• Compact footprint allows placement in high-airflow locations

Will this fit my vehicle and plumbing setup?

This EVIL ENERGY cooler is built for systems that use 5/16" (ID) transmission cooler lines, making it compatible with many cars and light trucks. Always measure your vehicle’s cooler line inner diameter and confirm there is adequate clearance where you plan to mount the cooler. The kit is universal—not vehicle-specific—so check hose routing and space before ordering.

• Designed for 5/16" inside-diameter ATF lines
• Compact dimensions: 15.66" × 5" × 0.75" for tight installs
• Includes hoses and mounting hardware (verify fit before cutting lines)

What materials and durability specs should I expect?

The cooler core is aluminum alloy for rapid heat transfer and light weight, while the included hoses are made of chlorinated polyethylene (CPE) formulated for fluid systems. The hose is rated for a working pressure of 145 PSI with a bursting pressure listed at 900 PSI, and it withstands temperatures from -40°F to 257°F for dependable service in varied climates.

• Core: corrosion-resistant aluminum alloy, black finish
• Hose: CPE material; working pressure 145 PSI, burst 900 PSI
• Temperature range: -40°F to 257°F for wide operating conditions

How difficult is installation and where should I mount it?

Installation is straightforward for anyone comfortable with basic automotive plumbing and hand tools. The kit includes instructions and mounting hardware; plan to mount the cooler where it receives the most unobstructed airflow — typically in front of the radiator or behind the grille. Secure hoses away from hot exhaust components and sharp edges to ensure long-term reliability.

• Includes clear installation instructions and mounting hardware
• Best mounted in high-airflow locations for optimal cooling
• Avoid routing hoses near exhaust and moving parts

Who this cooler is for: drivers who need a compact, universal transmission oil cooler to help manage ATF temperatures—especially owners of tow-capable cars, light trucks, and vehicles frequently used in heavy traffic or hot climates. It’s also a practical aftermarket upgrade for anyone wanting an affordable, easy-to-install oil cooler solution that fits tight spaces without requiring vehicle-specific plumbing adapters.