727 / 42RE / 46RE / 47RE / 48RE, Lube Regulated Pressure Regulator Valve

$ 49.00

Description

727 / 42RE / 46RE / 47RE / 48RE, Lube Regulated Pressure Regulator Valve

OE valve must match ’78-later design. See instructions for details.

Complaint:

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

Cause:

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


Correction:

Install this steel valve for improved stability. Lube regulation improves converter feed at low RPM and high throttle conditions.

Under extreme pressure or temperature conditions, the converter/lube circuit in listed Chrysler RWD units can be restricted by the PR 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 This outdated technique contributes to slow engagements or — if the hole is improperly drilled — excessive converter pressure and low line pressure.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 regulatored pressure regulator valve 22771A-02K, which ensures oil flow under extreme operating conditions and prevents drainback when the truck is off.

  • Improves converter feed/lube oil flow at critical low RPM and high load conditions
  • Redesigned valve prevents fluid drainback & 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 PR valve/manual valve pair

 

Additional information

Weight1 lbs
Dimensions6 × 6 × 5 in

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