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Symptoms:
  • Loss of prime
  • Low cooler flow
  • Low pump volume
  • Pump noise
  • Pump seal leakage
  • Switch codes
  • TCC codes
Cause:

Pump body bores vary in diameter. Standard replacement bushings often result in excessive hub-to-bushing clearance.

Correction:

This improved fit replacement bushing restores proper hub-to-bushing clearance.

40TE, 40TES, 41AE, 41TE, 41TES, 42LE, 42RE, 42RH, 42RLE, A670, A904

Pump Bushing

Part No.

12502-01

Pump Bushing
  • 12502-01_combo

  • Pump Bushing

Small_12502-01_combo Small_12502-01

40TE, 40TES, 41AE, 41TE, 41TES, 42LE, 42RE, 42RH, 42RLE, A670, A904

Pump Bushing

Part No. 12502-01

Package Quantity: 5

Pump , Upgraded material

Complaint:

  • Loss of prime
  • Low cooler flow
  • Low pump volume
  • Pump noise
  • Pump seal leakage
  • Switch codes
  • TCC codes

Cause:

Pump body bores vary in diameter. Standard replacement bushings often result in excessive hub-to-bushing clearance.


Correction:

This improved fit replacement bushing restores proper hub-to-bushing clearance.

  • Width: 0.535"
  • Housing Bore: 1.619"
  • Shaft Dia.: 1.498"
  • Bushing Style: Precision
  • Material: Steel-backed bimetal

Excessive torque converter hub-to-pump bushing clearance is a root cause of code 38, TCC slip codes, front seal leakage, loss of prime code 35, and pump noise. The OE bushing is machined in place, allowing a wide tolerance on pump housing bore diameters. Bore diameters can vary by more than .003". This wide tolerance is a problem when using standard replacement bushings. Standard replacement bushings will often have .008" or more hub-to-bushing clearance with an average 10 times more oil loss than the Sonnax improved fit bushing. The Sonnax improved fit pump bushing 12502-01 will restore the clearance necessary for proper operation. The Sonnax bushings should be used when the housing diameter is greater than 1.6175", which will be in most cases.

  • Allows precision clearances with wide tolerance pump bushings.
  • Does not require machining to restore correct clearance.

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Contact a Sonnax Distributor to purchase this part.