• Driveline clunk
  • Reduced seal ring life
  • Rear component driveline wear


Excessive total unit endplay


Sonnax unit endplay shim shim allows for proper setting of unit endplay and supports the direct drum by supporting the sun gear.

4R100, E4OD

Unit Endplay Shim
Part No. 36402-Z

Reverse planet endplay, 4 I.D. slots, .010" thick

Package Quantity: 10

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It can be difficult to reduce the endplay in Ford 4R100 and E4OD units with spline or sunshell wear. When driveline wear is excessive, sealing ring and thrust wear increases. As the lower unit wear increases, OE selective thrust washers are not thick enough to compensate. Rebuilders often try to correct excessive endplay by adding thicker shims to the pump surface, but this does not solve the problem. Sonnax unit endplay shim 36402-Z compensates for driveline wear.

  • Shim (together with OE thrust washer) allows for precise endplay adjustment
  • .010" Thick shim is used between 4-tanged thrust washer and rear planetary assembly
  • Shim lifts the sunshell as well as the drum
  • Does not reduce the output shaft free play
  • Material: Steel
  • Inner Notch Count: 4
  • Inner Dia.: 2.598"
  • Thickness: 0.010"
  • Outer Dia.: 3.760"
  • 4R100, E4OD Unit Endplay Shim 36402-Z
  • 4R100, E4OD Unit Endplay Shim 36402-Z