4L40E 5L40E 5L50E [00-UP] Automatic Transmission Washer Kit

Thrust washers that are worn, cracked, or lost during disassembly leave end play out of spec and cause the kind of internal movement that shortens the life of a freshly rebuilt automatic transmission. This washer kit is assembled specifically for the 4L40E, 5L40E, 5L50E, and ON10 units produced from 1999 onward, giving you the washer set you need without having to hunt individual pieces from multiple sources.

At REMCO, every kit is put together by hand. The components are counted and verified against a piece list before the box is sealed, and that same piece list ships inside the box so the technician on the bench can do a quick count before the job starts. REMCO has been working in automatic transmission parts since 1991, and that process has not changed.

What this listing does not cover is equally important to know: there are no friction discs, no steel plates, no sealing rings, no Automatic Transmission Filter, and no gaskets here. If your rebuild requires those components, they need to be sourced separately. Buying only what you actually need keeps costs down, but only if you have already confirmed the rest of your order is covered.

The shipped weight of this item is 1 lb. Before placing your order, read the transmission code directly off the unit - not from a VIN decoder or a service manual estimate. The code confirms whether you are working with a 4L40E, 5L40E, 5L50E, or ON10, and that confirmation is the only reliable way to make sure this washer kit matches your application.

• Worn or missing thrust washers cause axial play and accelerated wear inside the unit - this washer kit addresses that directly before reassembly.
• This listing covers washers only. It does not include friction discs, steel plates, sealing rings, Automatic Transmission Filter, gaskets, or bands - check your parts list before ordering.
• Assembled by hand at REMCO using individual components selected for these specific units - not a generic prepackaged set pulled from a shelf.
• Contents: thrust washer kit, 1 lb shipped weight. A piece list is included inside the box so you can verify contents on arrival.
• Before ordering, confirm the transmission code on the unit itself - this kit applies to 4L40E, 5L40E, 5L50E, and ON10 assemblies built from 1999 onward.

What's in the box

• 1 x Thrust Washer Kit, 4L40E 5L40E 5L50E Kit

Compatible vehicles

• Fits 323ci [00-06], 325i/xi [01-06], 328i/is [96-00], 330i/ci/xi/M [01-07], 335i/ci/xi/d [07-09], 525i [01-03], 528i/it [99-00], 530i [01-03], X3 [04-07], X5 [00-08], Z4 [01-06], CTS [03-07].