Description

Upgrade Your Transmission Cooling

Thermal Cooler Bypass Valve with Install Kit to suit Ranger and BT-50 6 Speed Autos.

Adding a thermal bypass valve allows your cooler to operate at 100% capacity all the time. This is beneficial when towing and touring, particularly in warmer climates as we have in Australia and New Zealand.

Kit includes:

  • Thermal Cooler Bypass Valve
  • Case Sleeve
  • Pan Gasket
  • Oil Filter

 

Customer Reviews

Based on 14 reviews
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M
Marius Mienie
Trans cooler , bigger oil pan and bypass valve

Just yesterday 25/6/25 i had the trans cooler , bigger oil pan and thermal bypass valve fitted with Rowel and Searle in Adelaide which i bought from wholesale automatics , i feel more at ease now that the factory cooling system has been eliminated , the temp on the gearbox now so far runs at about 60 degrees instead of the normal 96 degrees granted its now winter , but yes I am happy with the product , next will be the torgue converter since the guy at Rowel and Searle told me its a common thing to go as well .

Thanks for the 5-star review, Marius

j
john cunico
Thermal bypass

excellent kit fast service

Thanks for the 5-star review, John. It's good to know the kit is working well for you.

P
Peter Brown
Bypass valve for 2021 Everest

Trans temps during normal towing have dropped by 20 degrees since installing the bypass valve.

Cheers for the review Peter. It's great to hear the bypass valve has dropped your temps so much!

B
Bruce Friend
Must have upgrade

Great mod along with the twin cooler to reduce my transmission temps by 30-35 degrees. My transmission would run at 95 degrees everyday before the mods but when towing with 2 ton on the back even in 10 degree ambient temps it would run at 105-110 degrees, haven't towed yet but I am expecting it to run at between 70 and 85 degrees.
The installation instructions are easy to follow and yes I would recommend this and the twin cooler.

That's a great outcome Bruce! Thanks a lot for taking the time to write us a detailed review.

K
Kaiden McKenzie
Easy as

Easy as to install, doing this is obviously messy but parts were good quality with really clear instructions

Thanks for the review Kaiden! I'm glad you liked the product.

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