I have a '96 Mazda B4000 SE 4x4 with the 4r55e. Not sure if these came with aux tranny coolers from the factory. Any input would be appreciated. Thanks!
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Look at your radiator, the side facing the engine. On the driver's side of it you'll see two metal lines going into it: one at the top and one at the bottom (those are your transmission cooling lines). Follow the lines and see where they go. If they eventually go into some rubber hoses that lead into another miniature radiator-looking thing, then yes you have an aux transmission cooler.