Automatic Transmission Oil Cooler Assembly

Keep your Toyota SUV shifting smooth with a high‑efficiency oil cooler. This direct‑fit unit lowers ATF temperature, protects clutches, and keeps viscosity stable during towing, off‑road climbs, and hot city traffic. Stable heat means longer gearbox life and cleaner shifts — a smart upgrade and a must‑have replacement when the old cooler leaks, corrodes, or flows poorly. Ideal for heavy‑duty use and hot climates, it’s the reliable Prado oil cooler replacement you can trust.

How it works ❄️

Hot transmission fluid runs through a stacked‑plate aluminum core. Airflow (and on some setups, engine coolant) removes heat, then the cooled ATF returns to the valve body and torque converter. The result: consistent hydraulic pressure, steady shift timing, and reduced oxidation of WS‑spec fluid, even under load.

What if it fails ⚠️

Symptoms include slipping or harsh shifts, burnt smell, rising temps, warning lights, and wet fittings. Severe failures may cause coolant/ATF mixing, damaging bearings and clutch packs. Driving overheated can lead to varnish, warped steels, and a costly rebuild.

Install tips

Bolts to factory mounts with OE‑style quick connectors. Replace O‑rings, flush lines, torque fittings, and verify ATF level after a hot‑soak road test. Check for leaks, confirm stable temps, and always install a new cooler after any gearbox failure to avoid debris recirculation ♻️.

• Land Cruiser Prado