• Damaged washers
  • Excess endplay


The plastic material used by the OE melts or breaks under normal operation.


Install these bimetal thrust washers to prevent thrust washer breakage and ensure proper endplay.

4L30-E, TH180, TH180C (3L30)

Thrust Washer & Shim Kit
Part No. 54701-03K


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The OE plastic 3-tab washers break or melt under normal operation in listed GM TH180, TH180C (3L30) and 4L30-E transmissions. Sonnax 3-tab bimetal thrust washer and shim kit 54701-03K replaces the OE plastic washers in both pump and center support locations.

  • The steel tabs on the Sonnax thrust washer eliminate breakage
  • The bronze thrust surface will not melt like the OE plastic thrust washers
  • Shims provide more flexibility when setting endplay and allow for rebuilding units after thepump has been resurfaced. The Sonnax washer kit can be stacked to cover a build height from .075" through .125" in .010" increments
  • This kit contains enough parts for pump and stator support locations

The Sonnax thrust washer kit cannot be used to replace late style no-tab thrust washers.

  • 3-Tab Thrust Washers (2) .075"
  • Shims (4) .010"
  • Shims (2) .030"
  • Material: Bimetal
  • Tab Count: 3
  • Outer Dia.: 2.500"
  • Inner Dia.: 1.740"
  • Thickness: 0.074"
  • 4L30-E, TH180, TH180C (3L30) Thrust Washer & Shim Kit 54701-03K
  • 4L30-E, TH180, TH180C (3L30) Thrust Washer & Shim Kit 54701-03K