About us

We design and manufacture high-performance transmission cooler kits built for vehicles that work hard – whether it’s towing a caravan, hauling heavy loads, or tackling tough off-road terrain.

Backed by years of industry expertise, our products are purpose-built for 4WDs, towing vehicles, and performance applications, delivering exceptional thermal management to protect your transmission and drivetrain under pressure. From weekend warriors to commercial fleets, our customers trust Coolmaster to keep their vehicles running cooler, longer, and more efficiently.

Our coolers feature an advanced stacked plate & fin design, allowing for superior heat transfer with minimal flow restriction – which means better lubrication of transmission parts, less wear, and a longer service life. Constructed from durable, lightweight aluminum, our kits are engineered to fit in tight spaces and include high-quality fitting kits with easy DIY installation instructions.

With up to 30% greater efficiency than traditional coolers, our products help reduce costly repairs, improve fuel economy, and deliver peace of mind in the harshest conditions.

Our ever-growing application range includes Ford Ranger, Mazda BT-50, Toyota LandCruiser, Hilux, and many more.

Whether you’re towing a boat up the coast, crossing the outback, or pushing limits on the track – COOLMASTER is built to go the distance.