Symptoms:

  • Lockup shudder
  • Overheated converter
  • Low cooler flow
  • Soft TCC apply
  • Build up of release pressure during lockup

Cause:

The OE valve stroke is insufficient to control circuit timing of applied vs. release pressures and the bore is worn.

Correction:

Salvage the worn bore and improve timing and flow to the apply and release circuits with this improved oversized valve.

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

4-Spool Switch Valve
Part No. 22771A-01

Replaces 4-spool valves only.

View Instructions Find a Distributor

Bore wear toward the spring end of the 4-spool switch valve reduces converter release oil in listed Chrysler units. This affects converter charge at idle, causing engine stumble, loss of lube oil flow, overheating and poor performance. Bore wear at the inboard end creates poor TCC apply or a reduction in line pressure boost. Salvage worn bores with Sonnax 4-spool switch valve 22771A-01.

For bores with excessive wear, Sonnax also offers oversized 4spool switch valve 22771A-13. Both the oversized and standard size Sonnax valves will improve the timing and flow to the apply and release circuits.

  • Valve controls TCC release oil venting during apply for a firmer apply and no shudder
  • Stem length, spool spacing and exhaust timing have been improved to ensure quicker stroke and less valve bounce

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 42-46-47-48RH/RE Valve Body Layout

Chrysler 42-46-47-48RH/RE Valve Body Layout
  • 42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904 4-Spool Switch Valve 22771A-01
  • 42RE, 42RH, 44RE, 44RH, 46RE, 46RH, 47RE, 47RH, 48RE, A727, A904 4-Spool Switch Valve 22771A-01