Transchill Arctic Black Transmission Cooler Kit for DMAX / BT-50 3.0L (TCB645DPK)


The NEW 32mm 14 row TransChill Transmission cooler kit TCB645DPK fits Isuzu D-Max and Mazda BT-50 4JJ3-TCX (3.0L 4cyl) 2020 – On models and is designed specifically to reduce excessive transmission heat caused by towing, carrying loads and driving in sand, snow, off-road or hot conditions.

The 32mm TransChill Transmission cooler is an effective & economical way to keep the transmission at its optimum operating temperature. High efficiency turbulators in each tube direct the fluid for superior heat transfer. The unique 32mm plate & fin design allows for extreme cooling whilst the compact design is perfect for our vehicle specific mounting.

  • New & Improved model

  • Designed and engineered in Australia

  • 32mm, 14 row fin & plate design allows for extreme cooling

  • Durable Black powder coat resists oxidisation

  • 100% pressure tested at 150psi for quality assurance

  • Internal tubulation for efficient heat transfer

  • Up to 50% more efficient (*heat transfer rate – BTU/hr)

  • Pre-drilled mounting plates for easy installation

  • Inlet & Outlet size: M16 fittings



Due to the extreme heat generated in an automatic transmission, an auxiliary oil cooler is an economical and efficient way to help protect against costly transmission repairs.
Automatic Transmission Fluid (ATF) cools, lubricates and cleans internal transmission components. When transmission components exceed 93°C (200°F) the performance of ATF is seriously compromised.

Subsequently the life span of the ATF, seals and internal components of the transmission are significantly reduced. Higher internal temperatures also increase the wear rate of the friction and clutch plates.


The Direction-Plus™ Transmission Cooler Kit can reduce the temperature of the ATF by as much as 33°C and assist maintaining acceptable operating temperatures. A reduction of just 11°C that can double the life expectancy of the transmission, ATF and all internal components.


    • Vehicle specific laser cut 4mm 5005-H34 aluminum mounting brackets

    • All mounting hardware included

    • ATF Hose (Meets or exceeds SAE J1019 requirements)

    • 1x Davies Craig Black 32mm 14 row oil cooler

    • 3yr Warranty *Conditions apply

When ordering a product please make sure you order correctly as a restocking fee may apply for wrongly ordered parts. Should you be unsure contact us for free assistance  Please include your Rego or VIN on the contact form or alternatively have this available when you call us on (07) 5619 7869


All parts are in brand-new condition. Please inspect the goods for any damage before signing the delivery note. If the items were damaged during transit a claim should be made. Should any part be found defective, please contact us within 7 days. The buyer must return the part at their own expense for validation of fault. Proper procedures must be followed when installing injectors. Coding of the injectors via a scan tool by a professional is required.

When returning a product, the product must be unused and still in its sealed condition. RETURN POSTAGE IS NOT REFUNDABLE, OPEN PACKAGES CANNOT BE REFUNDED.

Warranty For your peace of mind

Warranty of 12 Months or 20,000kms (whichever occurs first), so you can feel confident with every service and repair.

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