Filter and reusable rubber pan gasket for the 4R100 in Ford 7.3L Powerstroke 4x4 F-250 and F-350 trucks with the 2-inch inlet. Replaces YC3Z-7A098-BA.
A 7.3L Powerstroke that tows makes more heat and more debris than almost anything else the 4R100 was bolted to, and the filter is what stands between that debris and the pump. This kit is the pan-drop service set for a 4x4 F-250 or F-350 with the 7.3L diesel: one 4R100 transmission filter with the 2-inch pickup inlet and one molded rubber pan gasket. It replaces Motorcraft YC3Z-7A098-BA and crosses to Wix 58968. If your truck has started whining in gear, takes a beat to engage Drive or Reverse when it is cold, or runs the fluid temperature up on a long pull, and the pan has not been off on record, this is where to start.
The 4R100 pump draws every drop of line pressure through this filter. Per ATSG, the filter plugs into a bore in the oil pump and hangs down into the bottom pan, just beneath the solenoid body that carries the shift, coast clutch, TCC and EPC solenoids. On 4x4 trucks the pan is the deeper version, so the pickup has to reach farther down to stay submerged when the truck is braking hard with a trailer, climbing a grade or sitting nose-up on a ramp. The neck on this filter is what makes it right for that pan. Clutch dust, steel wear and varnish all end up in the media, and once it loads up, the pump works harder for less flow, the fluid heats, and pressure sags exactly when the converter and clutches need it most.
These overlap with internal problems the 4R100 is known for, including coast and intermediate clutch wear and solenoid pack faults, so a filter will not fix everything on this list.
Check the fluid level hot in Park first; a low level gives the same whine and slip as a clogged filter. Then look at the service history. A truck with no recorded pan drop in the last 30,000 miles, or 21,000 miles if it tows, which is Ford's severe-service interval for this transmission family, is due regardless. If the truck sets codes or drops into limp mode, read our E4OD shift solenoid symptoms guide and the EPC solenoid symptoms guide before assuming it is the filter.
Listed for the Ford 4R100 in 7.3L Powerstroke 4x4 F-250 and F-350 trucks that use the 2-inch filter inlet. The 4R100 used more than one pickup depending on year and drivetrain, so measure the inlet neck on the filter in your truck, or compare it against the second photo, before ordering. A filter with the wrong neck will not seal in the pump bore and the pump will pull air. 2WD shallow-pan trucks need a different filter. If in doubt, send us the year and VIN. More parts for this unit are on our E4OD/4R100 collection page.
If the pan floor is dented or the rail is bent from past overtightening, replace it now with our 4R100 4WD oil pan. Heavy friction material in the pan means the unit needs more than a service, and a E4OD overhaul kit is the next step.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Measure the pickup neck on the filter currently in your truck, or compare it to the second product photo. The 4R100 used different pickups by year and drivetrain, and the wrong neck will not seal in the pump bore.
It is a molded rubber gasket, so it does not need sealant. Install it dry on a clean rail and do not overtighten, or it will squeeze out and leak.
Ford lists a 21,000-mile fluid, filter and seal change for this transmission family under severe service, which includes towing more than 1,000 miles per trip and lots of idling. Most 7.3L trucks fall into that category.
If the filter was restricted or the fluid was low, it can. If the pan shows chunks of friction material or the fluid is burnt, the clutches are worn and a filter will not bring them back.
MERCON V. Ford's original MERCON is no longer sold, and Motorcraft says MERCON V is the fluid for transmissions previously serviced with MERCON.
