4R70W Overhaul Kit, new and ready to install. Fits the 4R70W. Ships fast from the USA.
This listing is the complete soft-parts package for rebuilding a 2004-and-later Ford 4R70W family transmission, the version Ford also calls the 4R70E and 4R75E once the input speed sensor arrived. It is the kit people look for after a 2004-2008 F-150, a Crown Victoria or Grand Marquis, or an E-150 van starts slipping on the 2-3 shift, burns the direct clutch, or leaks from every seal at once. Inside the box: the gasket and seal overhaul set, 19 friction plates, 18 steel plates, a pan filter and band material, as shown in the photo.
The 4R70W stacks five clutch packs (forward, direct, reverse, intermediate and coast) plus an overdrive band and a low/reverse band around a Ravigneaux gearset. Every one of those packs is applied by fluid pressure through a piston, and that pressure is held in by lip seals, Teflon sealing rings and O-rings. When the soft parts are worn, the frictions glaze and the seals stop holding, so the unit flares and slips. A master kit replaces both halves of the problem in one teardown: new sealing so every circuit holds pressure again, and fresh friction and steel plates so each pack has full clamping surface.
Pull the pan before buying. A thin gray paste on the magnet is normal wear; flakes of lining and black fluid mean clutches are already gone. Run a line pressure test too, because a worn pressure regulator bore in the valve body causes soft shifts and burnt clutches on its own, and Sonnax lists low line rise, soft shifts and premature clutch failure as pressure regulator symptoms. If you rebuild around a leaking valve body, the new frictions burn just like the old ones. Our 4R70W F-150 common problems guide walks through the checks in order, and the Crown Victoria shift problems guide covers the same unit in the police and fleet cars.
The kit's application list covers 2004-2010 F-150 (4.2L, 4.6L and 5.4L, including the 2004 F-150 Heritage), 2004-2011 Crown Victoria, 2004-2006 Expedition, 2004-2014 E-150 vans and the 2004 Mustang. One honest correction: Ford moved the 2005-and-later Mustang automatic to the 5R55S, so only a 2004 Mustang uses this transmission. Ford changed a lot of hard parts for 2004, including the ring gear, output speed sensor, sun shell and the pump's intermediate piston, so a 1993-2003 unit needs a different kit; see our 1996-2003 4R70W overhaul kit. Count your clutch plates during teardown and compare them to the kit before you start assembly, or send us your year and VIN and we will confirm it. Every other part for this unit is in the 4R70W parts collection.
If you need a spare filter and pan gasket for the first service after the rebuild, the FT105 filter and gasket kit fits the same pan.
| Fits | 4R70W |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. This kit is listed for 2004-and-later units. Ford changed the sun shell, ring gear, output speed sensor and pump intermediate piston for 2004, so 1993-2003 transmissions should use the 1996-2003 overhaul kit instead.
The listing includes the gasket and seal overhaul kit, 19 friction plates, 18 steel plates, a pan filter and band material, as pictured. Pistons, drums, bushings, the valve body and the torque converter are not included.
No. The 2005-and-later Mustang automatic is a 5R55S, a different transmission. Only the 2004 Mustang in this kit's list uses the 4R70W family.
Use what your owner guide or dipstick specifies. Most 2004-2008 4R70W and 4R75E applications take MERCON V, while Ford's 2009-and-later Crown Victoria owner guides specify MERCON LV.
Clear codes and reset the PCM's adaptive shift memory so it does not keep compensating for the worn clutches you just removed, then road test through all four gears and lockup to let it relearn.
