4R75W Sun Shell 1993, new and ready to install. Fits the 4R75W. Ships fast from the USA.
If a Crown Victoria Police Interceptor, Marauder, F-Series truck or E-Series van with the 4R75W or 4R75E has lost second gear, overdrive or Reverse, the sun shell is one of the first hard parts to suspect. This is a brand-new sun shell assembly of the later non-magnetic design. It is the style Ford built from 2004 on, and it is listed as retrofitting back to 1993-era units. The 1993 in the listing title is that retrofit coverage. The 4R75W itself did not exist in 1993; it arrived years later as the heavy-duty member of the 4R70W family.
The 4R75W uses one compound planetary gearset with two sun gears. The sun shell is the stamped housing that carries the reverse sun gear and locks into the reverse clutch and overdrive drum. Drive that drum with the reverse clutch and the gearset gives Reverse. Hold it with the intermediate clutch and diode and you get second, and hold it with the overdrive band and you get fourth. Every one of those ranges loads the base of the gear, which is where a tired shell cracks.
Starting in 2004 the 4R70E and 4R75E read input speed with a sensor that looks through the sun shell at the stamping on the forward drum. ATRA's interchange notes say the shell must be non-magnetic for that sensor to see anything. A magnetic shell in a 2004-up unit gives harsh shifts or no shifts, plus ratio and input speed sensor codes. This shell is non-magnetic, so it is the right type for those later transmissions.
A burned intermediate clutch, a worn overdrive servo or low EPC pressure can cost you the same gears. Scan for codes, check line pressure and look at the pan before you buy hard parts. The Crown Victoria shift problems guide covers the pressure and solenoid checks on the police cars, and the Expedition common problems guide covers the trucks. Bright steel in the pan with a clean shift solenoid scan usually means the unit has to come out.
The listing describes a 4R70E/4R75 sun shell assembly for 2004 and newer Ford, Lincoln and Mercury cars, trucks and vans, retrofitting to earlier years. On a 2004-up 4R75E it replaces the original like for like. On an earlier 4R70W or a 2003 4R75W it is a conversion: the 2004 shell has a lower bearing surface, about .030 in., to make room for a thicker two-piece bearing. ATRA says the shell, bearing and forward sun gear must be changed together or end play will be wrong, and Ford sold that set as 4L3Z-7D234-AA. Compare the old shell side by side, or send us your year and VIN. See the 2004 4R75W sun shell and the full 4R70W/4R75W collection.
| Fits | 4R75W 1993 |
| Part type | Sun Shell |
| 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.
There was no 1993 4R75W. The 1993 in the title reflects the listing's retrofit coverage back to early 4R70W units. On any pre-2004 transmission, install it with the matching late bearing and forward sun gear.
The input speed sensor reads the forward drum through the sun shell. ATRA warns that a magnetic shell blocks that signal and causes harsh or no shifting with ratio and speed sensor codes.
Only on a 2004-up unit that already has the late parts. On earlier units the late shell sits .030 in. lower at the bearing surface, so the late bearing and sun gear go in as a set.
Check the reverse drum slots, the intermediate diode, carrier pinions and thrust washers, and the overdrive band. Replace the filter and any clutches with steel embedded in them.
New. It is a brand-new sun shell assembly of the non-magnetic 2004-up design.
