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Thread: Will any other year trans cooler rubber lines fit on a 99 w/ aux cooler?

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    wh23g3g's Avatar
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    Default Will any other year trans cooler rubber lines fit on a 99 w/ aux cooler?

    My main transmission to radiator cooler rubber ends are fatigued so I need to try and change them. I have the factory external transmission cooler. Dorman makes them for the 4wd but I don't know if the rubber hoses end comes off and is the same or can be swapped over. I don't know if the 5.2 lines will work since the transmission was different. But the oem lines for the R/T are no longer available. I couldn't tell if just the rubber end can be replaced since it has the quick connectors and suppose to have an anti drain valve in it. It's starting to fatigue right at the rubber section where it bends up to the radiator. Anyone know what will swap over?

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    99dart's Avatar
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    I can't help with what will work from another vehicle. But, you may want to take your lines outta the truck and have a shop that makes hydraulic lines install new ends.
    99 DA CC R/T
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    wh23g3g's Avatar
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    That's what I planned on doing but then I read about that drainback valve installed in the cooler line. Where is it located? Is it inside the rubber end or is it part of the transmission end cooler fitting?

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    Corey's Avatar
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    Somewhere there should be a trans flow chart that might show where that valve is. Doesn't this fluid flow through the cooler when in park or only in drive? If so, when letting the engine warm up after first started, this should give ample time for the fluid to flow through the cooler before driving away.
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