EVIL ENERGY 5/16ft Transmission Oil Cooler - Universal Tube & Fin Kit

In this review the EVIL ENERGY 5/16' transmission oil cooler is evaluated for drivers who need a compact, universal cooler that fits 5/16' ID transmission cooler lines. The bottom line: this kit is best for owners who want a straightforward, budget-friendly upgrade to help lower automatic transmission fluid temperatures because it pairs a lightweight aluminum tube-and-fin cooler with complete CPE hose and fittings, and it is simple enough for a DIY install if there is room in front of the radiator.

Key Features

• Universal fit: Designed for vehicles with 5/16' ID transmission cooler lines so most cars and light trucks can use the kit provided there is installation space.
• Aluminum cooler core: The tube-and-fin aluminum alloy core helps shed heat from ATF as air passes over the fins, improving transmission cooling during heavy use.
• Compact dimensions: At approximately 15.66' by 7.5' by 0.75' the cooler is easy to tuck into common grille or bumper locations without occupying excessive space.
• CPE hoses and fittings: Included CPE hose is rated to 145 psi working pressure and withstands -40F to 257F, offering reliable fluid handling across a wide temperature range.
• Simple installation: The kit ships with mounting hardware and instructions so most mechanically comfortable owners can install it where airflow is good.

Who It's For

This cooler is aimed at DIY mechanics, weekend racers, and owners of towing vehicles who want an economical way to reduce transmission fluid temperatures and extend transmission life. The universal 5/16' line compatibility and compact tube-and-fin design make it appropriate for many cars and light trucks that have room ahead of the radiator or in the bumper area.

Owners who need a heavy-duty, high-capacity cooler for continuous commercial towing or large trailers should look for larger multi-pass cores or vehicle-specific heavy-duty kits; this universal kit is a good value but is best suited to light- to medium-duty cooling needs.

Pros & Cons

Pros

• Good value: the kit includes the cooler, hoses, and mounting hardware for a complete install.
• Effective tube-and-fin design: fins help dissipate heat as ATF flows through the tubes and air moves over the core.
• Durable hose spec: CPE hoses rated to 145 psi working pressure and a wide temperature range provide confidence in most driving conditions.
• Easy to install: straightforward instructions and a compact size speed up DIY installs when space is available.

Cons

• Mixed long-term durability reports: some users note cracking over time, so it may not match heavy-duty commercial units for longevity.
• Universal fit requires space: vehicles with very tight front-end layouts may not have adequate room for installation.

Specifications

Compatibility	Universal for 5/16' ID transmission cooler lines
Cooler material	Aluminum alloy
Core dimensions	15.66' x 7.5' x 0.75'
Hose material	CPE
Hose working pressure	145 psi
Hose bursting pressure	900 psi
Hose temperature range	-40F to 257F

Our Verdict

The EVIL ENERGY 5/16' transmission cooler is a practical, cost-conscious choice for drivers who need a compact tube-and-fin cooler that pairs with 5/16' lines and installs without major modification. It delivers sensible cooling performance and comes as a complete kit, making it good value for light- to medium-duty use, though those needing heavy-duty longevity should consider larger, vehicle-specific coolers.

Frequently Asked Questions

Will this cooler fit my car?
It fits vehicles with 5/16' ID transmission cooler lines, but you must confirm there is physical space in front of the radiator or bumper area for the 15.66' x 7.5' core.

Is the included hose durable for towing?
The included CPE hose is rated to 145 psi working pressure and a wide temperature range, suitable for most towing and towing-adjacent use, though heavy commercial duty may exceed its ideal service life.

How hard is installation?
Installation is straightforward for mechanically inclined owners; the kit includes hardware and instructions and works best when mounted where airflow is good.