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Trans cooler line adapter fitting....

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Old 09-08-2012, 08:33 PM
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Default Trans cooler line adapter fitting....

So I have been all over the place looking for this adapter fitting for my trans cooler set-up....this adapter is the SHAPE that I need but isn't the right size.....

Does anyone know of or can anyone find a part number for a fitting that is the sizes I labeled in the picture?That would help me out a LOT! THANKS!

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Old 09-09-2012, 12:06 AM
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Which trans cooler are you installing? Also, are you trying to use the stock trans cooler lines?
Old 09-09-2012, 12:19 AM
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Being the picture you posted looks like a NPT thread design with the taper. Im gonna asume you need a 1/2"npt to 5/16npt reducer bushing?
Old 09-09-2012, 12:22 AM
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it's a B&M hi-tech cooler with a fan....I have everything set up and mounted....just trying to use the stock line fittings and screw them into an adapter to 1/2 inch......
I'm starting to think that automotive uses 5/16 and not much else.......LOL....went to every hardware store i could think of....was thinking about calling up EAR fittings to see if they make something like that.....
Old 09-09-2012, 12:22 AM
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BRB with a NAPA part number for you.

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730-4953 is the Napa part number. The factory line snaps into it, and it fits the Tru-Cool 40K cooler. I believe it's 1/2", but I don't have one right here to check it for you. Maybe you can haul your cooler down to NAPA and make sure it fits.

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Old 09-09-2012, 12:24 AM
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Originally Posted by nonnieselman
Being the picture you posted looks like a NPT thread design with the taper. Im gonna asume you need a 1/2"npt to 5/16npt reducer bushing?
yes....the threads are all even down the stock fitting with a gasket at the end (not compression right?) and aren't compression type on the cooler.....
Old 09-09-2012, 12:30 AM
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Originally Posted by AKlowriderZ71
BRB with a NAPA part number for you.
even if you come up with nothing.....thank you for looking.....are you looking in a book of theirs or on their website? I went to NAPA today.....I didn't get the old guy (damn IT!)....the guy told me it was a 3/4 size on the end tank part of the trans cooler, and a 3/8 for the stock fitting.....LOL.....I shoulda waited for the old guy talking about port volume VS velocity.....
Old 09-09-2012, 12:34 AM
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Originally Posted by AKlowriderZ71
BRB with a NAPA part number for you.



730-4953 is the Napa part number. The factory line snaps into it, and it fits the Tru-Cool 40K cooler. I believe it's 1/2", but I don't have one right here to check it for you. Maybe you can haul your cooler down to NAPA and make sure it fits.
AWESOME! thank you SO much man! I kept on thinking that there HAS to be a stock style fitting with this 1/2 in end on it


Maybe if I ever make it back up to Elmendorf I'll bring you a six pack man!

Last edited by JeRM82; 09-09-2012 at 12:41 AM.
Old 09-09-2012, 12:46 AM
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Originally Posted by JeRM82
AWESOME! thank you SO much man! I kept on thinking that there HAS to be a stock style fitting with this 1/2 in end on it


Maybe if I ever make it back up to Elmendorf I'll bring you a six pack man!
Post back here to let me know if it fits or not.
Old 06-22-2015, 12:17 AM
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Originally Posted by AKlowriderZ71
Post back here to let me know if it fits or not.
Did they fit?


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