Thread: Anyone know the size fittings for trans cooler?

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  1. #1 Anyone know the size fittings for trans cooler? 
    SE Level Member GXDEMON's Avatar
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    Hey, Im gonna instal a Mishimoto HD trans cooler with a fan in my GXP and i need to figure out what the fitting sizes are for the return lines on both the radiator side and trans side. The cooler uses slip on barb fittings so i need to find those fittings if anyone knows what they are.
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  2. #2 Re: Anyone know the size fittings for trans cooler? 
    I live here. 02NavyBlue's Avatar
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    So you would rather run 3/8 hose the entire length instead of tapping off the existing transmission cooler lines?

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    2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
    2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits.
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  3. #3 Re: Anyone know the size fittings for trans cooler? 
    GTP Level Member wowitsfast's Avatar
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    I have a 97 so I don't know how it relates to your situation. I just cut off the rubber lines that come off the stock hard lines and connected there bypassing the radiator.

    My finger in on the return line.. or maybe it's the other way around either way the other line is on the bottom in the pitcure.

    Located on the driver side of the engine bay

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