Toyota Prado 150 Series PDI Heavy Duty Transmission Cooler suit 5 speed A750 and 6 speed AC60


Specific for the 150 series Prado we have chosen to move the thermo fan to the other side of the engine bay. This adds an extra task to the install, but the position is ideal for the engine power delivery as it sits in front of the intercooler and makes the transmission hose plumbing short and tidy.

NOTE: A number of other aftermarket systems place their transmission cooler in front of the cold side of the intercooler. We have had a number of retired mechanics realise the effects of this and looking to upgrade their intercooler since the higher intake air temps result in less torque and the transmission come out of lockup, which makes even more heat – they ended up with both intercooler and transmission cooler from PDI.

By default, all PDI external transmission coolers are designed to be market leading through:

· Maximum efficiency 29,000BTU (energy dissipation unit of measure).

Stacked Plate coolers – this is the best design you can use.

· Steel one-piece brackets (zinc plated and coated) to eliminate flexing of the aluminium cooler.

· High quality transmission cooler hose (rated to 400psi).

· Outlets on the side to prevent air locks inside the transmission cooler.

NOTE: Having the outlets at the bottom make the installation easier as the pipes are run down under the radiator, but if you get an airlock (from initial installation empty) there is a strong chance you will never actually fill the top of the coolers with fluid and designed cooler efficiency may never be reached.

Suitable for the following engines: 1GD-FTV 2.8L Diesel, 1KD-FTV 3.0L Diesel and 1GR-FE 4.0L Petrol

Additional införmation below

PLUS: PDI have developed an upgraded front mounted intercooler kit for the 150 Prado that will allow the engine to maintain its higher torque and power output under load. This means your gearbox is more likely to remain locked up while pulling up long hills and therefore significantly reduce transmission temperatures.



For GDJ150 Prado, the port on the condenser, makes moving the fan to the passenger side very difficult, due to space limitations and would require the installation of a aftermarket fan.


New car manufactures make a car to a price and ensure it meets the expectations of most customers. If you aren’t towing are are running standard power then, quite rightly, you probably won’t be thinking of adding a transmission cooler. If you want to be more scientific, then measure the transmission temperature and decide if you are comfortable with the temperatures you are seeing. If you will be towing a caravan or camper trailer then it is sensible to install an external transmission cooler, to make the transmission last as long as possible by keeping the temperatures down.

The ideal operating temperature for automatic transmission fluid is somewhere between 80 and 110 degrees C. Here’s what can happen above this range:

  • At approximately 115 degrees C, important additives begin to cook in the automatic transmission fluid (ATF). The result is the formation of varnish inside the transmission.

  • At approximately 125 degrees C, internal transmission seals, which are often manufactured from a polyacrylate material, begin to harden. The end results are internal and external leaks as the the seals lose their elasticity.

  • At approximately 145 degrees C, transmission clutch plates begin to slip because the oil is breaking down further.

  • At approximately 160 degrees C, seals and clutches effectively burn out. Carbon forms in the oil and your effectively killed the transmission. Often, a transmission will die within a few thousand km after experiencing 150-plus degree heat.

It is worth noting that the AT temp warning light on a 4 speed auto Landcruiser came on at 150degC and that generally means you are well beyond a safe temperature.


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