Description: 8L45, 8L90Shuttle Valve KitPart No. 154740-09K Symptoms:High line pressureHarsh shiftsLow cooler flowLoss of lube oilOverheated transmission & converterCause:Wear of the OE pressure regulator shuttle valve sleeve due to continuous movement of the shuttle valve prevents proper line pressure control.Correction:Install the drop-in Sonnax shuttle valve assembly with upgraded materials and increased critical valve-to-sleeve sealing engagement to restore hydraulic integrity and prevent future wear. Vehicles with a GM 8L45 or 8L90 transmission may exhibit high line pressure that results in harsh shifts, loss of cooler and lube flow and overheating of the transmission and converter. These problems may be caused by continuous oscillation of the shuttle valve within the shuttle sleeve, creating excessive wear and a path for balance line pressure at the pressure regulator valve to exhaust. This prevents proper positioning of the pressure regulator valve and can keep it in the higher pressure position. When in this position, bypass of excess pressure is not allowed and converter/lube/cooler feed pressure is greatly reduced. Sonnax drop-in shuttle valve kit 154740-09K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control. The length of the critical shuttle valve diameter has also been lengthened to provide better sealing and durability of the assembly. Shuttle sleeve is manufactured from highly wear-resistant billet aluminum to prevent wearHardcoat anodized aluminum valve combats premature wearCritical valve spool made 30% longer than OE for added sealing and durabilityDrop-in Zip Valve™ parts install quickly and easilyContentsValveSleeve
Price: 37.91 USD
Location: El Paso, Texas
End Time: 2024-11-15T18:20:55.000Z
Shipping Cost: 0 USD
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Returns Accepted: ReturnsNotAccepted
Country/Region of Manufacture: United States
Manufacturer Part Number: 154740-09K
Brand: Sonnax