EVIL ENERGY 5/16" Transmission Oil Cooler Kit — 4-Pass Black 15.66" Core, Compact Aluminum

EVIL ENERGY's 4-pass 5/16" transmission oil cooler kit is a compact aluminum cooler with hoses and fittings designed to reduce automatic transmission fluid temperature for most vehicles using 5/16" ID lines.

This bolt-on kit brings a durable, space-conscious cooling solution for drivers wanting to protect transmission longevity and performance under towing, heavy loads, or spirited driving. The cooler features a 4-pass tube-and-fin design in a black anodized finish, paired with CPE high-pressure hoses, clamps, and basic installation hardware. It's sized to fit tighter mounting locations while delivering improved airflow and heat dissipation compared with a single-pass core.

How does this 4-pass cooler lower transmission fluid temperature?

The 4-pass configuration routes fluid through multiple internal channels to increase exposure to the fin surface and lengthen dwell time, which improves heat transfer to incoming air. Finned tubing maximizes contact area so airflow carries heat away efficiently, helping ATF run cooler under load.

• Four internal passes increase fluid path and heat exchange.
• Tube-and-fin construction expands surface area for better cooling.
• Black aluminum alloy resists corrosion and sheds heat faster.
• Compact footprint fits tighter vehicle locations without sacrificing performance.

Will this kit fit my vehicle and transmission lines?

The kit is designed for universal fitment where transmission cooler hoses measure 5/16" inner diameter. Before purchasing, verify your vehicle lines are 5/16" ID and that you have a clear mounting area—typically in front of the radiator or AC condenser—for a 15.66" x 5" cooler core.

• Core dimensions: 15.66" long × 5" tall × 0.75" thick for tight spaces.
• Intended for 5/16" ID transmission cooler lines — measure first.
• Mounting brackets and hardware included for straightforward installation.
• Requires a location with direct airflow for optimal performance.

What materials and durability features are included?

The cooler uses aluminum alloy for the core, providing a strong, lightweight structure with good thermal conductivity. Hoses are made from CPE compound rated for wide temperatures and high working pressure, offering resistance to oil degradation and heat-related swelling.

• Aluminum alloy core: corrosion-resistant and lightweight.
• CPE hoses: working pressure 145 PSI, burst 900 PSI, temperature −40°F to 257°F.
• Black finish reduces visible wear and complements engine bay styling.
• Tube-and-fin array designed for long-term heat transfer efficiency.

How difficult is installation and what does the kit include?

Installation is intended to be do-it-yourself friendly for mechanically inclined owners and shops alike. The kit ships with the cooler, pre-cut CPE hoses, clamps, brackets, and a simple instruction sheet; plan about an hour depending on vehicle access and whether you relocate existing lines.

• Comes with hoses, clamps, mounting brackets, and instructions.
• Typical install time: roughly 30–90 minutes depending on vehicle.
• Requires a secure mount in an area with unobstructed airflow.
• Basic hand tools needed: wrenches, screwdrivers, hose cutters or utility knife.

Who is this for: This EVIL ENERGY transmission oil cooler kit is aimed at drivers who tow, haul, or push their vehicle's transmission harder than stock conditions—towing rigs, off-roaders, performance street cars, or anyone seeking to extend transmission service life by lowering ATF temperatures. It's best for vehicles that have 5/16" ID cooler lines and limited mounting room where a compact yet effective 4-pass core is required.