Symptoms:

  • Erratic line pressure
  • Burnt clutches
  • Poor shift quality
  • Low converter & lube flow
  • Overheating

Cause:

Continuous oscillation of pressure regulator boost valve results in excess sleeve bore wear, allowing line pressure to exhaust and/or blocking converter feed oil.

Correction:

Restore line pressure performance and renew converter feed by installing the Sonnax drop-in pressure regulator boost valve kit.

9T45, 9T50, 9T60, 9T65

Pressure Regulator Boost Valve Kit
Part No. 184740-02K

You need this if... View Instructions Find a Distributor

GM 9T45/50/60/65 transmissions may exhibit multiple line pressure and converter-related problems due to high wear in the main pressure regulator boost valve sleeve bore. Sonnax pressure regulator boost valve kit 184740-02K has upgraded materials and minimal clearances to prevent wear and restore boost valve functionality for proper line pressure.

  • Boost sleeve is manufactured from highly wear-resistant billet aluminum to prevent wear
  • Hardcoat anodized aluminum valve combats premature wear
  • Drop-in Zip Valve™ parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs
  • Valve
  • Sleeve
  • 9T45, 9T50, 9T60, 9T65 Pressure Regulator Boost Valve Kit 184740-02K
  • 9T45, 9T50, 9T60, 9T65 Pressure Regulator Boost Valve Kit 184740-02K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

9T45, 9T50, 9T60, 9T65 Pressure Regulator Boost Valve Kit Vacuum Test Locations