5R55N [99-UP] Automatic Transmission Bushing Intermedia Servo Bore Pin

A worn intermediate servo bore is one of those failure points that puts an entire unit at risk: once the bore loses its geometry, no seal holds pressure consistently and shift feel drops until the transmission stops performing altogether. This sleeve gives the technician a direct fix at that bore without replacing the case.

The part is sold as a single sleeve, not a kit. There are no additional pins, retainers, seals, or hardware included in the package, so before placing the order it is worth confirming exactly which servo components the repair will need alongside this piece.

The sleeve is designed for the 5R55W, 5R55S, and 5R55N automatic transmission families, covering production from 2000 onward. All three of those codes share enough architecture that this bore repair approach applies across them, but the codes are not the same unit and a technician should always verify the exact code stamped on the case before ordering. A digit misread between 5R55W and 5R55S, for example, is easy to do on a dirty transmission and will lead to a part that does not match.

REMCO has been working with automatic transmission components since 1991. Each piece that ships from the warehouse is checked against its part record before it goes into the box, and the box includes the part listing so the technician receiving it can confirm what arrived. The sleeve ships at approximately 1 lb.

If you are rebuilding the full servo assembly, make sure the rest of your parts list is complete before starting the repair. The bore sleeve handles one specific problem in the bore itself, and the surrounding components need to be in good condition for the fix to hold.

• Restoring a worn intermediate servo bore lets you recover a unit that would otherwise require a replacement case, saving significant teardown cost.
• This listing is for the sleeve only. No servo pin, snap rings, seals, or other servo components are included. Confirm what else your repair requires before ordering.
• The sleeve addresses bore wear directly at the source: an oversized or damaged bore loses pressure, and this insert brings it back to proper spec for a reliable seal.
• One (1) intermediate servo bore pin repair sleeve. Weighs approximately 1 lb. Designed for 5R55W, 5R55S, and 5R55N automatic transmission units built from 2000 onward.
• Before ordering, verify the transmission code stamped on your unit matches 5R55W, 5R55S, or 5R55N. A misread between these three codes is common and the sleeves are not interchangeable with other families.

What's in the box

• 1 x Bushing, 5R55N Intermedia Servo Bore Pin Repair Sleeve

Compatible vehicles

• Fits Mustang [05-10], Thunderbird [02-05], Explorer [02-10], Explorer Sport Trac [05-10], S-Type [00-02], XK8 [01-02], XKR [00-02], Aviator [03-05], LS [00-06], Mountaineer [99-01].