4R70W Master Rebuild Kit 1996-2003, new and ready to install. Fits the 4R70W. Ships fast from the USA.
This Raybestos master rebuild kit covers the 4R70W from 1996 through 2003, the run that starts just after the 4R70W replaced the AODE and ends before the 2004 redesign. It is the kit to look at when a Crown Victoria, Grand Marquis, Town Car, Mustang, F-150 or 5.0L Explorer has a transmission that slips, slides through shifts or comes out of the pan with burned fluid. The kit is new and carries a 1-year warranty, and it renews the frictions, steels, seals and gaskets so the overhaul is done once.
Every shift in a 4R70W is a hand-off between clutch packs and bands, controlled by line pressure that the EPC solenoid raises and lowers with load. The clutches can only hold what the pressure behind them allows, and the pressure can only be held if the piston seals and sealing rings are tight. On an older unit both sides are tired at once. A master kit replaces the wear items on the clutch side. It does not fix worn hard parts or a worn valve body, which is why diagnosis comes first on this transmission.
This is the step that saves a rebuild. Transmission Digest's "I Lost My EPC!" case shows how a worn pressure regulator bore bleeds EPC oil back to the pump inlet, so line pressure never rises under load and the transmission slips even with good clutches. Fresh frictions will not cure that, and if the bore is left worn the new clutches burn too. Put a pressure gauge on the line tap and confirm normal line rise before you condemn the clutch packs. Sonnax also documents a worn overdrive servo regulator as the cause of 4-3-neutral and burned bands on later valve bodies. Our Crown Victoria shift problems guide walks through those pressure checks, and the Crown Victoria common problems guide covers police and taxi duty cycles, where hours of idling cook the fluid and finish the clutches.
Listed for 1996-2003 4R70W transmissions. That range spans several internal changes: the 1998 move to a molded internal harness, the 2001 valve body that dropped the 2-3 accumulator stiffener plate, and different valve body castings by year. The soft parts and clutch plates in this kit cover the range, but hard parts, the harness and valve body pieces are year-specific. It does not fit 2004-up units, which changed the ring gear, output speed sensor and sun shell. Read the ID tag on the case rather than going by the title year, or send us your year and VIN. Every part for this transmission is on the 4R70W collection page.
| Fits | 4R70W 1996-2003 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | Raybestos |
| 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 listed for 1996-2003 4R70W units. Confirm the tag says 4R70W and not AODE, since some mid-1990s cars still used the older transmission.
The kit is Raybestos and is listed as new with a 1-year warranty.
Not always. Check line pressure first. A worn pressure regulator bore or a weak EPC solenoid can cause slipping with healthy clutches. If the fluid is burned and full of material, rebuild.
No. 2004 and later units changed the ring gear, output speed sensor and sun shell. Use a 2004-up kit.
Ford's 2003 Crown Victoria owner guide lists about 13.9 quarts dry, 12.8 for Police or Handling Package cars. Use MERCON V and set the final level hot on the dipstick.
