4R75W Overhaul Kit 2003-2014, new and ready to install. Fits the 4R75W. Ships fast from the USA.
This is a gasket and seal overhaul kit for the Ford 4R75W and its close sibling the 4R75E, covering 2003-2014. It is the right buy when a late-model 4R75 is leaking, engages slowly after sitting, or is losing pressure with miles on it, and you plan to reuse or separately replace the clutch packs. Typical vehicles are the F-150, Expedition and Navigator of that era and the Panther-platform Crown Victoria, Grand Marquis and Town Car, which stayed on this four-speed until production ended in 2011. The listing carries reference number KP37900H, and the product photo shows bagged sets: the pan gasket, front pump seal, piston lip seals, O-rings and Teflon sealing rings, with no frictions or steels.
The 4R75W is the heavier-duty evolution of the 4R70W. It still applies five clutches and an overdrive band hydraulically, with shift, EPC and converter clutch solenoids taking orders from the computer. Each apply piston seals with a molded lip seal, the shafts and drum hubs carry sealing rings that pass fluid between rotating parts, and the pump, case and valve body all seal with gaskets. Once those parts harden or wear, fluid that should apply a clutch leaks back to the sump, and the computer cannot command enough pressure to make up for it. This kit replaces that whole sealing layer in one job.
Seals are not the only cause of low pressure in this family. Transmission Digest describes pressure regulator bore wear that dumps EPC pressure back to the pump inlet, and Sonnax publishes vacuum tests for the AODE through 4R75W valve bodies. Do a hot line pressure test with a gauge, compare idle and stall readings, and air-test the clutches once the valve body is off. If the frictions are burned, buy a full master kit instead of seals alone. Our Crown Victoria shift problems guide covers the late Panther cars, and the Expedition common problems guide covers the SUVs.
The seal and gasket layout carries across this range, but other parts changed around it. ATRA notes that 2004 units moved to a new ring gear and output speed sensor and a non-magnetic sun shell, none of which interchange with 2003 parts. Ford also returned to a soft internal harness with new solenoids for 2009, and ATSG warns against retrofitting it to earlier cases. Fluid changed too: Ford's owner guides list MERCON V for the 2008 Crown Victoria and MERCON LV for 2009 and 2011. Match the pan shape and bolt count, the pump seal size and the case ID tag before installing, or send us the year and VIN. Every 4R70W and 4R75W part we carry is on the 4R70W/4R75W collection page.
| Fits | 4R75W 2003-2014 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Reference | KP37900H |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. The product photo shows a gasket and seal set only: pan gasket, pump seal, piston seals, O-rings and sealing rings. If your frictions are burned or glazed, add a master rebuild kit with frictions and steels.
The 4R75E and 4R75W share the same basic case and sealing layout, and this kit is listed for 2003-2014. Confirm with the case ID tag, pan bolt count and pump seal size, or send us your year and VIN before ordering.
It depends on the year. Ford's owner guides list MERCON V for the 2008 Crown Victoria and MERCON LV for the 2009 and 2011 models. Use what your owner guide or dipstick specifies and do not mix the two.
No. ATRA documents that 2004 units changed the ring gear, output speed sensor and went to a non-magnetic sun shell, and these parts do not interchange with 2003 components. The seals in this kit are not affected by that change.
At minimum the filter and pan gasket. Inspect the pump bushing and gears, test the solenoids and internal harness with a meter, and replace any clutch pack with glazed or burned frictions.
