Symptoms:

  • Delayed engagement
  • Pressure regulator buzz
  • Converter drain back
  • Lube failures
  • Converter bushing failure

Cause:

Poor converter line feed pressure causes delayed engagement, pump bushing and lube failure.

Correction:

Install Sonnax drop-in steel lube regulated pressure regulator valve for improved stability. Lube regulation improves converter feed at low RPM and high throttle conditions.

Warning:

To prevent converter slippage, restricted cooler flow and possible hydraulic noise, remove the cooler line drainback valve.

42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904

Lube Regulated Pressure Regulator Valve
Part No. 22771A-02K

Fits '78-later units only

View Instructions Find a Distributor

Under extreme pressure or temperature conditions, the converter/lube circuit in listed Chrysler RWD units can be restricted by the pressure regulator valve. The practice of drilling a hole between passages is problematic. This outdated technique contributes to slow engagements or, if the hole is improperly drilled, excessive converter pressure and low line pressure.

The best way to improve oil flow is to replace the OE valve with Sonnax lube regulated pressure regulator valve 22771A-02K, which ensures oil flow under extreme operating conditions and prevents drainback when the vehicle is off.

  • Improves converter feed/lube oil flow at critical low RPM and high load conditions
  • Redesigned valve prevents fluid drainback and slow engagements
  • Helps charge the converter in Park
  • 22771A-02K and Sonnax 22771-09 can be used independently but are of greatest benefit when used as a pair
  • Drop-in Zip Valve™ installs quickly and easily

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.

Chrysler 42-44-46-47-RH/RE, 48RE Valve Body Layout

Chrysler 42-44-46-47-RH/RE, 48RE Valve Body Layout

  • 42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904 Lube Regulated Pressure Regulator Valve 22771A-02K
  • 42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904 Lube Regulated Pressure Regulator Valve 22771A-02K
  • 42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904 Lube Regulated Pressure Regulator Valve 22771A-02K details