Tranny Cooler NPT Inlet/Outlet Size

[Petrucci914]

Hey guys,I'm getting conflicting reports on what size NPT fittings my tranny cooler should have. I was first told 1/2" but others tell me that's too big. The 1/2" NPT coolers tend to be very big and rarely come with mounting hardware so if one of the other coolers work that'd be a big plus. Thanks!

[djb383]

Check your IM.

[Petrucci914]

Ya, I got you IM, thanks. But another person has said 1/2" fittings. But if you got a cooler with the 3/8" barbs and it worked then that works for me. 3/8" and 1/2" is very close...either way I think you could slide it on.

[keithvibe]

Quote, originally posted by Petrucci914 » 3/8" and 1/2" is very close...either way I think you could slide it on.Um... what world do you live in where 3/8th of and inch and 1/2 an inch are very close... they aren't close when your talking inside diam. of a hose... that's a full 1/8th of in inch difference. If you stretch the hose that much you will weaken the sides of the hose causing it to split a lot sooner than you think.My 2c... get the right size fitting or hose.

[Petrucci914]

I wouldn't jam a smaller hose over a larger barb. I'd put a 1/8" larger hose over a smaller barb, though, with the right hose clamp. I just ordered one with the 3/8" barb. I think it'll work just fine. Don't worry, I'll do it right. I always play it safe.

[djb383]

Post a pic when you get'er done.

[kevera]

Sorry man,I haven't installed mine yet and another member told me that(I won't name names) it was the 1/2" size.Let me know how it works out.

[Petrucci914]

No problem, man. It worked out better this way as it comes with all the mounting hardware. I'll let all know how it goes.

[djb383]

Which cooler did you get?

[Petrucci914]

http://www.transmissioncoolers...unt=1

[djb383]

Headered style............good choice.