When the Automatic Transmission Filter in a 5R55W, 5R55S, or 5R55N unit is overdue for replacement, fluid flow to the valve body and clutch circuits suffers, and this single Automatic Transmission Filter is the direct answer for that specific repair step. What sets this part apart from a kit listing is straightforward: it ships as one Automatic Transmission Filter and nothing else, which is exactly what a technician needs when the rest of the automatic transmission rebuild is already covered.This Automatic Transmission Filter is cataloged for 5R55W, 5R55S, and 5R55N units from 2002 onward. Those three designations share a common family but are not interchangeable in every detail, so confirming the code stamped on the actual unit before ordering is the right call. The part number in this listing corresponds to catalog model 5R55W, covering all three variants in that range.The Automatic Transmission Filter ships at 1 lb. There are no gaskets, no seals, no friction discs, and no steel plates in this box. If your job calls for a full seal set or clutch pack alongside the Automatic Transmission Filter, those are separate listings. Checking your parts breakdown before placing the order avoids a return trip.Each order is pulled and verified against its item record before it leaves. The box contains the Automatic Transmission Filter and a packing slip confirming what is inside. For a single-component order, that process keeps errors out and puts the right part on the bench. This Automatic Transmission Filter addresses fluid restriction and flow issues in 5R55W, 5R55S, and 5R55N automatic transmission units built from 2002 onward. This listing is a single Automatic Transmission Filter only. It does not include any gaskets, seals, bands, clutch packs, or rebuild components. Review your parts list before purchasing. Sized and designed to fit the 5R55W, 5R55S, and 5R55N platform, so fitment stays specific to that family of units rather than a generic cross-application part. Contents: one Automatic Transmission Filter, 1 lb shipped weight. What you see is what ships, no additional items are packed in the box. Before ordering, confirm the exact transmission code stamped on your unit. 5R55W, 5R55S, and 5R55N share a platform but differ internally; matching the code matters. What's in the box1 x Automatic Transmission Filter, 5R55W [2-1 4]Compatible vehiclesFits Mustang [05-10], Thunderbird [02-05], Explorer [02-10], Explorer Sport Trac [05-10], S-Type [02], XK8 [02], XKR [02], Aviator [03-05], LS [02-06].