10R80 Transmission Cooler 2017-2020, used and ready to install. Fits the 10R80. Ships fast from the USA.
On a 2017-2020 F-150 with the 10-speed, a leak at the front of the truck is often the auxiliary transmission cooler or the short lines bolted to it, and buying the core, hoses and fittings separately adds up fast. This listing is a used, factory original 10R80 cooler assembly taken from an F-150. As the photo shows, it comes with the aluminum cooler core, its mounting bracket, the attached metal and rubber line sections and the fitting block, so the whole front section can be replaced together.
Every 10R80 uses a coolant-to-ATF heat exchanger, the warmer, to bring the fluid up to temperature and hold it there; GEARS Magazine puts normal operating temperature at 206 to 215 F. On larger-engine and tow-rated trucks, Ford adds an auxiliary ATF-to-air cooler out in front, fed through a thermal bypass so the fluid only goes through the core once it is hot. This assembly is that auxiliary circuit for the F-150: hot fluid leaves the transmission, flows through the lines into the core, gives up heat to the air moving through the grille, and returns through the second line. A pinhole in the core or a seeping crimp on a line lets fluid out every time the bypass opens.
Degrease the core and line crimps, drive the truck to full temperature and look for fresh wetness; that settles a leak. If the complaint is heat rather than a leak, GEARS suggests tracing temperature with an infrared gun on the lines in and out of the transmission and heat exchanger, because a rubber hose can collapse internally and a coolant control valve can stick. Sonnax adds that one quart of overfill in a Ford 10-speed can cause overheating and venting by itself. If the truck also shifts badly, start with Ford TSB 23-2152, which covers harsh engagement and harsh or delayed shifts on the 2017-2020 F-150 with a software update and relearn, and read our 10R80 F-150 common problems guide. Pressure-related shift faults are covered in the 10R80 pressure control solenoid symptoms guide.
This assembly is listed for the 2017-2020 Ford F-150 with the 10R80. The 10-speed arrived in the F-150 for 2017, and Ford routed the auxiliary cooler and its lines differently by engine, cab and towing package within these years, so this is not a one-size part. Match the core size, bracket and especially the line shapes and fitting block against your truck before ordering, or send us your year and VIN and we will check the fit. It is not intended for Expedition, Navigator, Mustang or Ranger. The rest of our 10-speed lineup is in the 10R80 parts collection.
Because this is a used assembly, flush the core and lines with clean fluid before installing it and pressure-check it for leaks. Inspect the fluid draining from your old cooler: metal or friction debris means internal wear that a cooler swap will not fix. Use new seals at the fitting block, secure every line clip so nothing rubs, and refill with MERCON ULV only. Check the level hot, in the 206-215 F range, not cold. If the transmission has been run low, change the filter at the same time; the 10R80 aluminum pan kit with filter includes a drain plug that makes the next service easier. A shudder at steady speed after a low-fluid episode points toward the converter clutch circuit, and the 10R80 TCC solenoid is the part to check next.
| Fits | 10R80 2017-2020 |
| Part type | Transmission Cooler |
| Condition | Used |
| Brand | OEM |
| Reference | F150 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for the 2017-2020 Ford F-150 with the 10R80. Line routing changes with engine, cab and towing package, so compare the core, bracket and line shapes to yours or send us your year and VIN.
Yes. As pictured, it includes the cooler core with its bracket, attached metal and rubber line sections and the fitting block.
It is a used, factory original assembly. Flush it and pressure-check it before installation.
MERCON ULV only. Top up what was lost and set the level with the fluid at 206-215 F, because overfilling a Ford 10-speed can cause overheating and venting.
Only if the cause was low fluid or overheating. Ford TSB 23-2152 covers harsh shifts on 2017-2020 F-150 trucks with a software update and adaptive relearn, so check that first.
