Symptoms:

  • Low pressure
  • Pump damaged
  • Pump slide wear
  • Gear ratio codes
  • No 4-5

Cause:

Wear at the main pressure regulator bore causes instability in decrease oil and balance oil.

Correction:

This kit enables the repair of the pressure regulator bore, returning stability to decrease oil and balance oil.

5L40-E, 5L50-E

Pressure Regulator Valve Kit
Part No. 55211-08K


You need this if... View Instructions Find a Distributor
  • Valve and sleeve kit restores hydraulic integrity to the pressure regulator valve circuit.
  • Allows salvage of expensive pumps.
  • Valve
  • Sleeve
  • Spring Pin

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

GM 5L40-E, 5L50-E Valve Body Layout

GM 5L40-E, 5L50-E Valve Body Layout
  • 5L40-E, 5L50-E Pressure Regulator Valve Kit 55211-08K
  • 5L40-E, 5L50-E Pressure Regulator Valve Kit 55211-08K

You need this if...

A vacuum test at the Balance port holds less than 18" of vacuum. You must temporarily plug the Internal Feed hole to conduct this test. Be sure to un-block Internal Feed when done.

5L40-E, 5L50-E Pressure Regulator Valve Kit Vacuum Test Locations