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Twin Heavy Duty Transmission Oil Cooler Kit to suit Mazda BT50 Series 1 and 2 6R80 6 Speed Auto (Vehicle Build BEFORE Aug 2020)

$745.00 inc. GST

Bring down the transmission operating temperature to a reasonable level with one of our new Twin Heavy Duty Transmission Oil Cooler Kit that fits ALL bullbar and winch combinations.



Mazda BT50 Twin Mount Transmission Cooler (Vehicle Build BEFORE Aug 2020)

What is the best automatic transmission cooler kit? It’s one that combines durability and reliability with outstanding transmission cooling. Our new Heavy Duty Twin Mount Mazda BT50 Transmission Cooler not only allows your transmission to maintain normal operating temperatures even while towing or going offroad and it is both durable and reliable as 4WD’ing in this country demands but also suits *** ALL *** bullbar and winch combinations – there is no bullbar or winch combination that this kit won’t suit.

Add 2L Full Synthetic Transmission Fluid

When you are installing the transmission cooler you may want to top-up the transmission fluid.  Select the “Add 2L Full Synthetic Transmission Fluid” option from the drop-down menu to add 2L of Full Synthetic Transmission Fluid.

Wholesale’s transmission cooler kits are:

  • 4WD tough – Thick 3mm heavy duty steel
  • Strong single piece bracket design – For maximum rigidity even over corrugations
  • Custom designed for the Mazda BT50
  • Dual coated – both zinc plated and Mannex Black coated for maximum corrosion resistance
  • High efficiency crossflow transmission oil cooler
  • High temp trans cooler hose and fittings
  • Full DIY installation instructions

As the largest 4WD transmission specialist in the southern hemisphere we see many failed from other less experienced retailers. It’s one of the reasons we designed and manufactured our very own Mazda BT50 Transmission Coolers here in Australia for Australian conditions.


  • Never install a multi-piece transmission cooler bracket or one that includes the transmission cooler as part of the bracket structure.  They are prone to fatigue and failure.
  • Never install a stainless steel transmission cooler bracket. Stainless steel induces corrosion in your aluminium cooler. Just google “stainless steel and aluminium” to find out more.

Wholesale is proud of our kits because they are Australian designed and manufactured for our tough, outback conditions. They won’t let you down.

Note! In order to get further control of your transmission temperature you can check out our Transmission Temperature Gauges or Transmission Lock-Up Kits.

Click on the link below to open the installation instructions


Installation Instructions

Additional information

Weight 5 kg
Dimensions 54 × 33 × 15 cm


Would you like 2L Full Synthetic Transmission Fluid?

No, Do Not Add 2L Trans Fluid, Yes, Add 2L Trans Fluid

Customer Reviews

Based on 5 reviews
Lewis Barnes
Great Kit,

I liked the well detailed and laid out instructions easy to follow the install process.

Thanks for the feedback on the instructions Lewis. We put a fair bit of effort into making them easy to follow. Cheers.

Bt50 cooler

Purchased the trans cooler kit for my Bt50. With only limited mechanical ability was able to follow the instructions. Video helped as well. Great kit, excellent customer service and it works perfectly. Temps down 5-10 deg consistently. I did not fit the bypass as I do not tow. Very happy.

Thanks for the review. Glad the instructions helped!

Peter Wuelfert

The cooler arrived quickly. It’s a project for January so I’m hoping it will go smoothly else you guys might get a call. Thanks again for the great service & all the best for the New Yesr

Thanks for the review. Feel free to give us a call if you need any help.

Darren Painter
Great Product

This is a great product that was easily installed - instructions were easy to follow. Noticed a reduction in Trans Temp straight away - Highly recommend this product

Thanks for the review.

Dual Heavy Duty Transmission Oil Cooler Kit to suit Mazda BT50 Series 1 and 2 6R80 6 Speed Auto

Awesome kit and easy to install with great step by step instructions