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

$745.00 inc. GST $670.50 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 Up To Jul 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.

Twin Cooler Features in Icons

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

Transmission Cooler Tested on Corrugated RoadsControl Your Transmission Temperature

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 play button below to watch the installation video

Click on the link below to open the installation instructions


Installation Instructions

Customer Reviews

Based on 11 reviews
Steve W.
Great buy, easy fit, clear precise instructions

Well worth the buy. Good communication from WAA (by phone) as I forgot to get the bypass valve and wanted to know if still worth a fit - or wait for the bypass.
Anyone handy or the at least mechanically minded can easily fit as a full set of comprehensive instruction (including very clear concise pics - and even spanner sizes). I'm mechanical trade (heavy fixed plant not "Auto") and the included instructions certainly make it quick and easy to fit - rather than try to work out the best method and line runs and location.
Just got the bypass valve (not yet fitted as I am time poor at the moment) - and I am more than confident anyone with mechanical nouse can do it as instructions are also spot on. Also includes full transmission oil change out (suggested) procedure and they are much easier (and much less mess) than some of the online how to's I checked out.
I just wish I had bought the deeper sump pan with the drain plug as a package deal.

Jonathan Moore

Easy install, dropped transmission temperature from 93° to 84°.

Cheers for the review Jonathan. Good to hear the install went well and your trans temps are dropping.

Robert De Jong
Cool it

These coolers are easy to install and really make a difference to your transmission oil temperature.

Cheers Robert. Great to know that the cooler is helping with your trans temps.

Shane Berry
BT50 Trans cooler and Bypass Valve

Awesome addition to my car as I tow a lot.
Keeps the trans temp low. Gear changes are smooth and faster.

Worth every cent.

Thanks for the review Shane!

Derick Cooke
Trans coolers

Great units come with easy fitting instructions

That's great to hear, Derick. Thanks for your review!