Converts the cooler ports on a Ford 10R80 or 6R80 to -8AN so you can run braided lines to an aftermarket cooler, with two 90 degree swivel fittings.
If you tow with a 10-speed F-150, plow with an Expedition, or run a tuned Mustang, the question is usually the same: how do you plumb a bigger transmission cooler into a 10R80 without splicing rubber hose onto the factory lines? This adapter kit answers it. It replaces the factory quick-connect style cooler fittings at the case with an aluminum block carrying two -8AN male ports marked IN and OUT, and it includes two -8AN 90 degree swivel hose ends so braided or push-lock line can leave the case and head straight for your cooler. It also fits the earlier Ford 6R80 six-speed.
ATF leaves the 10R80, runs through the cooler circuit and returns to the case. On the factory setup those connections are quick connects and formed hard lines sized for the stock cooler. When you add a larger stacked-plate cooler, the weak point is usually the joint between the OE plumbing and the new hose. This adapter moves that joint to a threaded AN connection right at the transmission, so every fitting from the case to the cooler is a real sealed thread instead of a hose clamp. The 90 degree swivels let you aim the hose rearward or down, clear of the crossmember and exhaust, and clock it exactly before tightening.
Sonnax documented that a 10R80 overfilled by about one quart will overheat and vent fluid, and that the level has to be checked hot, at roughly 206-215 F (96-101 C). A truck that was topped off by eye after a service can look like it needs more cooling when it really needs fluid drained back to spec. Confirm the level first. If shifts are poor hot or cold, read the 10R80 F-150 shift problems guide and the 10R80 common problems and fixes guide before buying hardware, because valve body and solenoid faults can mimic heat problems. Heat does accelerate wear on those parts, so a properly sized cooler is cheap insurance on a working truck.
The kit is made for the Ford 10R80 used in the 2017-up F-150, 2018-up Expedition and Mustang and 2019-up Ranger, and for the 6R80 six-speed in the F-150, Expedition and Mustang. The listing also mentions the Bronco and Explorer, but the Bronco and many Explorers use the 10R60, which is a different case, so do not assume it fits those. Look at the cooler port area on your transmission and the clearance around it before ordering, and if you are unsure, send us the year and VIN. Other parts for this unit are on our 10R80 parts page.
The block and fittings are machined aluminum with a black finish and the whole kit weighs about 2.1 lb. Hose, cooler and clamps are not included; buy -8AN line rated for transmission fluid.
| Transmission | Ford 10R80, Ford 6R80 |
| Line size | -8AN |
| Includes | Cooler port adapter with seals, 2 x -8AN 90 degree swivel hose fittings |
| Material | Machined aluminum, black finish |
| Weight | 2.1 lb |
Do not count on it. The Bronco uses the 10R60, not the 10R80. This kit is made for the 10R80 and the 6R80, so check your transmission tag before ordering.
No. The kit includes the port adapter with its seals and two -8AN 90 degree swivel hose ends. You supply -8AN hose rated for ATF and the cooler.
Only the drain-back from the cooler lines, but you must top off and set the level hot afterward. On a 10R80 an overfill of about a quart can cause overheating and fluid out the vent.
Mercon ULV. Do not mix in other ATF types when you top off after the cooler install.
The adapter is marked IN and OUT. Match those to the transmission's cooler feed and return and to your cooler's inlet and outlet before tightening the hose ends.
