Oversized B4 Release Valve Kit, for 55-50SN, 55-51SN, Sonnax Transmission
Oversized B4 Release Valve Kit, for 55-50SN, 55-51SN, Sonnax Transmission
Oversized B4 Release Valve Kit, for 55-50SN, 55-51SN, Sonnax Transmission

Oversized B4 Release Valve Kit, for 55-50SN, 55-51SN, Sonnax Transmission

  • Sale
  • $39.73

Symptoms:

  • 2-3 Flare
  • 2-3 Neutral
  • 3-2 Harsh
  • 3-2 Neutral

Cause:

Bore wear causes the valve to stick and excessive end plug leakage alters valve timing.

Correction:

Valve hang-up is eliminated by reaming the bore and installing the Sonnax oversized valve, spring and end-plug. Valve timing is restored by reducing excess end plug leakage.

55-50SN, 55-51SN

Oversized B4 Release Valve Kit
Part No. 59947-26K

    REQUIRES TOOLING: F-59947-TL26
      REQUIRES VB-FIX: VB-FIX

  • Recalibrated spring restores OE shift quality.
  • Restores hydraulic integrity.
  • Hard coat anodized valve for increased durability.
  • Addresses a multitude of shift concerns.
  • Salvages valuable core.
  • Release Valve
  • Spring
  • End Plug
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