4R75W Input Drum 1998, remanufactured and ready to install. Fits the 4R75W. Ships fast from the USA.
Searching for a 4R75W input drum for a 1998 F-150, Expedition, Navigator, Crown Victoria or Mustang usually means one thing: the truck or car backs up but will not pull in Drive, or it flares and slips in the lower gears with burnt fluid in the pan. This remanufactured drum is the 1998-era forward clutch drum for the Ford 4R70W family, ready to go into a rebuild instead of a drum you have to strip, inspect and gamble on.
Ford did not use the 4R75 name in 1998. A 1998 vehicle came with the 4R70W; the 4R75E and 4R75W labels arrived with the 2003-2004 updates. Parts catalogs often file the whole family under one heading, which is why this drum is listed as 4R75W. What matters is the design era: this is the early style drum that belongs in a 1998 unit, and the trans tag on the case will tell you exactly what you have.
The input drum is the forward clutch drum. It rides on the input shaft, so it spins whenever the converter turbine turns, and it holds the forward clutch piston and plate pack. When the valve body sends forward clutch oil through the stator support and into the drum, the piston clamps the pack and the drum drives the forward sun gear. That clutch is on in first, second and third, so this one drum handles every launch, every stoplight and most towing load. Sonnax calls forward drum breakage a chronic problem across the AOD, AODE and 4R70W series, which is why a known-good drum is worth more than a used one of unknown history.
Not every no-Drive is a broken drum. Check fluid level and condition, read codes, and put a gauge on line pressure first: low pressure from a worn pressure regulator bore or EPC fault will burn a perfectly good forward pack. The 4R70W F-150 common problems guide walks through those checks, and the Crown Victoria shift problems guide covers the electrical side for car applications. Once the transmission is apart, look for cracks around the drum apply area, stripped splines, a scored bushing and torn sealing ring grooves.
This drum is listed for 1998. 1998 is also the first year of the black case connector and separate hard plastic internal harness, so if you are rebuilding a 1998 do not mix in 1993-1997 electrical parts. ATRA notes that forward drums changed in 2004 from one clutch apply hole to three, and calls that change cosmetic for clutch apply, but keep the rest of the geartrain era-correct. Put your old drum next to the photo and compare the spline count, hub height and sealing ring lands, or send us your year and VIN and we will confirm before it ships. The listing photo shows a clutch pack, pressure plate and snap ring laid out beside the drum; ask us if you need to know exactly what ships. See every part for this family in the 4R70W collection, or the 1992 4R70W input drum for early units.
| Fits | 4R75W 1998 |
| Part type | Input Drum |
| Condition | Remanufactured |
| 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.
A 1998 F-150 with an automatic overdrive uses the 4R70W, and this drum is the 1998-era forward drum for that family. Check the trans tag on the case and compare your old drum to the photo, or send us your year and VIN and we will confirm before shipping.
Yes. In the 4R70W family the input drum is the forward clutch drum. It is driven by the input shaft and applies the forward clutch in first, second and third.
Yes. The forward clutch is not used in Reverse, so a cracked drum, stripped splines or a leaking piston usually leaves Reverse working while Drive slips or will not engage.
Replace the forward clutch frictions and steels, the piston seals and the drum sealing rings, and check the thrust bearings and forward sun gear. An overhaul kit for 1996-2003 units covers the soft parts.
MERCON V. Ford specifies MERCON V for the 4R70W and 4R75 family; do not substitute MERCON LV or ULV.
