E4OD Transmission Cooler 1994-95, new and ready to install. Fits the E4OD. Ships fast from the USA.
If your 1994 or 1995 Ford truck with the E4OD automatic is leaving red drops under the radiator or along the frame rail, and the dipstick keeps reading low with no leak at the pan, the steel cooler lines are the first thing to look at. This listing is a new transmission cooler line set for the 1994-95 E4OD, referenced to the F-150. Despite the short name on the title, it is not a radiator or a finned cooler: the photo shows a set of formed bare steel tubes with the bends already made, the plumbing that carries fluid from the transmission case forward to the cooler and back again.
Hot fluid leaves the torque converter circuit, travels forward through one line to the cooler tank inside the radiator, and returns through the other line to the case, where it becomes lube oil for the bushings, planetary sets and clutch packs. So a bad line is not only a leak. A pinched or rusted-shut tube cuts lube flow, and a leaking one lets the level drop until the pump pulls air. On the E4OD the converter clutch is a simple on/off design, and Sonnax notes that cooler flow on this unit rises when the converter clutch applies. A Sonnax technical director put average E4OD cooler flow in 3rd gear at about 1.2 to 1.4 gallons per minute unlocked and 1.8 to 2.0 locked, which gives you a real number to test against rather than a guess.
Clean the lines and both ends with brake cleaner, top off with the engine running, and drive until fully warm. Follow the wet trail uphill to its highest point. If the lines stay dry but the truck still runs hot or shows converter clutch codes, the problem may be inside the case. Our E4OD cooler line replacement guide explains how to tell a line fault from a worn line-to-lube regulator valve in the pump, a valve Sonnax ties to codes 62, 628 and 1744 and to stalling on Reverse engagement. For the wider list of what goes wrong on this unit, read E4OD common problems and fixes.
The listing covers the E4OD in 1994 and 1995 and names the F-150 as its reference vehicle. Cooler line routing on these trucks changes with engine, cab and bed length, two- or four-wheel drive, and whether an auxiliary cooler was fitted from the factory, and the end fittings changed during the E4OD run too. Before buying, lay your old lines next to the photo and compare the number of bends and the end fittings, or send us your year and VIN and we will check it. If you are shopping other E4OD parts, everything we carry is grouped on the E4OD transmission parts page.
If the truck slipped for a while on low fluid before you found the leak, check the pan for clutch material. A unit that is already shifting soft may need a pump service such as the E4OD pump for 1989-1994, or internal work with parts like the sprag clutch and a shift kit while it is apart.
| Fits | E4OD 1994-95 |
| Part type | Transmission Cooler |
| Condition | New |
| 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 a set of formed steel cooler lines, as the photo shows. The cooler itself is the tank built into the radiator or an add-on cooler; these lines connect the E4OD case to it.
The listing is referenced to the F-150. Routing changes with body, drive and engine, so compare your old lines to the photo or send your year and VIN before ordering a different truck.
Use MERCON V. It replaced the original MERCON spec for the E4OD. Top off gradually with the engine idling and finish the level on the dipstick once the fluid is warm.
Usually just what drains from the lines and the radiator cooler, not a full pan. Have a few quarts on hand and check the level warm after a test drive.
Check cooler flow. Low flow with clean lines points to a restricted radiator cooler or a worn line-to-lube regulator valve in the pump rather than the lines themselves.
