Printpartsummary
Symptoms:
  • Excess total transmission endplay
Cause:

Worn gear, snap ring, and/or spline

Correction:

This Sonnax shim allows for adjustment of the total and rear unit endplay. Works with both 3- and 4-tanged thrust washers.

42RE, 42RH, A904

Shim

Part No.

12780-Z

Shim
  • Shim

Small_12780-z

42RE, 42RH, A904

Shim

Part No. 12780-Z

Package Quantity: 10

Endplay , For 3- or 4-Tanged OEM Washers

Complaint:

  • Excess total transmission endplay

Cause:

Worn gear, snap ring, and/or spline


Correction:

This Sonnax shim allows for adjustment of the total and rear unit endplay. Works with both 3- and 4-tanged thrust washers.

  • Outer Dia.: 2.810"
  • Inner Dia.: 2.000"
  • Thickness: 0.010"
  • Material: Steel

It is often difficult to reduce the total transmission end play in some A904 or A500 transmissions. Excessive total and/or rear unit endplay is often the result of gear, snap ring and/or spline wear. Rear unit endplay is often difficult to reduce with available selective washers. When rear unit endplay is loose, the total unit endplay measurement is also excessive. Sonnax offers a .010" shim, 12780-Z, which is installed between the #9 thrust washer and the rear planetary.

  • Adding a shim or shims between the OE thrust washer and the rear planetary reduces rear unit endplay, which also reduces total assembled transmission endplay.
  • This shim will fit either the 3- or 4-tanged OE thrust washer design.

Click here to view PDF if instructions do not appear below.

It appears you don't have a PDF plugin for this browser. Click here to view the PDF file.

Contact a Sonnax Distributor to purchase this part.