6R75 Overhaul Kit 2007-2008, new and ready to install. Fits the 6R75. Ships fast from the USA.
Ford fitted the 6R75 six-speed to the 5.4L Expedition and Lincoln Navigator for the 2007 and 2008 model years, the two years before those SUVs moved to the 6R80. Most of these trucks have towed, so by now many leak at the pan or rear seal, hang in neutral for a moment when shifted into Reverse cold, or slip on a long grade with a trailer behind them. This kit is the Precision International KP37900J, interchange 95002D, cataloged for the 2006-2008 6R60, 6R75 and 6R80 family. It supplies every gasket, seal, O-ring, sealing ring and small rubber part needed to reseal a 6R75 during a rebuild.
The 6R75 sits between the 6R60 and the 6R80 in torque capacity and shares the same ZF-derived layout: a Lepelletier planetary set, clutches A, B and E that drive, and brakes C and D that hold. Two packs apply together in each forward gear, so the clutches trade off constantly as the truck shifts. Every apply circuit is sealed by a molded piston seal, and oil reaches the rotating drums past Teflon rings. On a heavy SUV that has towed, heat hardens that rubber first. A hardened seal lets pressure escape, the pack slips, and the slipping cooks the fluid, which speeds up the next failure. The overhaul kit breaks that cycle by renewing all of the sealing at once.
Not every bad shift on these trucks needs a rebuild. Transmission Digest documents a harsh 2-1 downshift below 10 mph on 2007-2008 Navigators with the 5.4L and 6R75 built on or before April 17, 2008. The fix is a PCM reprogram that should leave the TCM showing part number 7U74-7J104-AA, followed by a hot relearn drive, and the complaint can survive an overhaul if the update is skipped. Check that first, then use our Expedition 6R80 problems guide and Navigator problems guide, which cover the electrical tests for the whole family. Low or burnt fluid with ratio codes and good electrical tests means it is time to reseal.
The listing covers 2007-2008 6R75 transmissions. That generally means the 5.4L Expedition, Expedition EL, Navigator and Navigator L of those years, but confirm with the tag on the case. Ford changed these units in the middle of 2008, cutting the valve body dampers from six to two, so a late 2008 truck differs inside the valve body even though both use this kit. Compare each old seal with its replacement as you take the unit apart. For a 2009-or-later Expedition or Navigator, which uses the 6R80, see the 2009-2014 6R80 overhaul kit. When in doubt, send us your year, model and VIN, and browse the family on the 6R60, 6R75 and 6R80 collection page.
| Fits | 6R75 2007-2008 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Reference | KP37900J |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The 6R75 went behind the 5.4L V8 in the 2007-2008 Ford Expedition and Lincoln Navigator. From 2009 those SUVs use the 6R80, which takes a different kit.
The KP37900J number covers the 2006-2008 6R60, 6R75 and 6R80 family, so the seal set is shared. Small parts can differ by build, so match the old seals as you go.
Usually not. On Navigators built on or before April 17, 2008, that complaint is a calibration issue fixed by a PCM reprogram and relearn drive. Do that before a rebuild.
These units were factory filled with Mercon SP. Ford moved the family to Mercon LV in 2009. Use what your owner guide lists and do not mix types or add supplements.
Add a filter and, if the clutches are worn, a frictions and steels kit. Inspect the pump bushing and drums too. The overhaul kit only covers seals and gaskets.
