These transmission case fittings will install into your transmission with 1/4 NPS (national pipe straight) threads, and seal with a crush washer.
Since they seal on the washer, you may need to clean / file the transmission case boss to ensure a good seal, as well as some teflon paste on the threads.
Choose from 6AN (most common) or 8AN.
Transmission fitment:
GM PG / TH350 / TH400 / 700R-4 / 200-4R / 2007 and older 4L60E / 4L65E. May fit later 4L60 cases as well, sizes may be different. SEE BELOW.
Ford C5 / AOD / AODE / 4R70W / E40D / 4R100
*The buyer is responsible to determine which you need, remove the stock adapters and measure the diameter of the threads.
If measurement is 0.5568" they are 9/16 - 18.
If they measure 0.521", the 1/4 NSPT option, which is the most popular, is required.
* Recommended for aftermarket applications. Not Recommended for OE Vehicles due to the type of lines, this is intended for aftermarket -6 or -8AN lines.*