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  • Forward clutch drags in Park
  • Delayed engagement
  • Converter bushing failure
  • No cooler flow in Park
  • Overheated converter


OE manual valve design does not allow converter or cooler charge in Park.


Address symptoms caused by inadequate OE design and introduce converter/cooler charge in Park by installing upgraded Sonnax manual valve.

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

Manual Valve
Part No. 22771-09

For use in conjunction with '78-later pressure regulator valve only; see instructions for details.

View Instructions

Listed Chrysler transmissions often suffer delayed engagement, converter bushing failure, overheated converters and dragging forward clutches. These symptoms can be a direct result of the design of the OE manual valve, which does not allow converter or cooler charge in Park. Sonnax manual valve 22771-09 is engineered to overcome the OE shortcoming by allowing fluid into these critical circuits when in Park.

For maximum benefit, recommend installing Sonnax lube-regulated pressure regulator valve 22771A-02K along with Sonnax manual valve.

  • Redesigned, patented valve alleviates cooler/converter starvation
  • Case-hardened steel valve combats premature wear
  • No reaming or special tools required

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

42 48rhefamily

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  • 22771 09 combo
  • 22771 09