6R75 Overhaul Kit 2006-2008, new and ready to install. Fits the 6R75. Ships fast from the USA.
This is the Precision International KP37900J overhaul kit, cataloged for the 6R60 and 6R75 six-speeds built from 2006 through 2008 in Ford and Mercury vehicles. On the 6R75 side that means the 5.4L Expedition and Lincoln Navigator of 2007-2008, the generation before those SUVs moved to the 6R80. On the 6R60 side it means the Explorer, Explorer Sport Trac and Mercury Mountaineer. If one of those trucks leaks from the pan, hesitates going into gear when cold, or has started to slip on a tired, high-mileage unit, this is the reseal kit for the rebuild.
The 6R75 is Ford's heavier-torque version of the 6R60, both built under Ford's agreement with ZF on the 6HP26 design. Like the 6HP26, it builds six speeds from one simple and one double planetary set and five clutch packs, two of which apply together for each forward gear. Every pack depends on a piston seal and on sealing rings that pass oil into spinning drums, so one leaking ring can show up as slip in more than one gear. An overhaul kit restores that sealing across the whole unit: piston seals, sealing rings, O-rings and the gaskets that stop external leaks. Frictions and steels are separate purchases.
Not every rough shift on these SUVs is mechanical. 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 cause is calibration, the fix is a PCM reprogram followed by an adaptive learn drive, and the complaint can remain even after an overhaul. Rule that out before you tear the unit down. Our Expedition shift problems guide and the Navigator problems guide cover the electrical and software checks that apply to the whole 6R family.
The KP37900J is listed for 2006-2008 6R60 and 6R75 transmissions. For 2009 and later, Ford's F-150, Expedition and Navigator use the 6R80, so pick our 2009-2014 6R80 overhaul kit instead. Small differences exist even inside the family; for example, Transmission Digest notes the 6R60 input shaft carries two sealing rings where the 6R80 carries three. Compare the old rings and seals to the kit as you strip the unit, read the transmission tag, and send us your year, model and VIN if you are unsure. Every family part we carry is on the 6R60, 6R75 and 6R80 collection page.
| Fits | 6R75 2006-2008 |
| 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.
Yes. It is cataloged for 2006-2008 6R60 and 6R75 transmissions. Match the seals to your old parts as you take the unit apart, since small differences exist inside the family.
The 6R75 is best known in the 2007-2008 Ford Expedition and Lincoln Navigator with the 5.4L V8. The 6R60 went in the Explorer, Explorer Sport Trac and Mercury Mountaineer. Read the tag on the case to be sure.
No. Those use the 6R80. Order the 2009-2014 6R80 overhaul kit instead.
No. It is the seal and gasket overhaul set. If the clutch plates are burnt or worn thin, buy frictions and steels separately.
Usually not. On Navigators built on or before April 17, 2008, that complaint is a known calibration issue fixed with a PCM reprogram and adaptive learn, and it can persist after an overhaul. Have the software checked first.
Use the fluid called out for your build on the fill cap or in the owner manual. These early 6R units were filled with Mercon SP before Ford moved the family to Mercon LV. Do not use additives.
