Sonnax 104520-12K 6L45, 6L50, 6L80, 6L90 Transmission Pump Boost Valve Kit
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Sonnax 104520-12K 6L45, 6L50, 6L80, 6L90 Transmission Pump Boost Valve Kit

$21.43
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Brand: Sonnax Type: Performance Pump Component Interchange Part Number: 80289NK,45507ATK Items Included: Boost valve kit Manufacturer Part Number: 104520-12K Material: Aluminum Universal Fitment: Yes  Vintage Part: No Performance Part: Yes 6L45, 6L50, 6L80, 6L90 Transmission Boost Valve KitPart No. 104520-12K Vehicles with listed GM transmissions may exhibit insufficient line rise in drive ranges, soft shifts and/or burnt clutches. These problems may be caused by continuous oscillation of the boost valve within the boost sleeve, creating excessive wear and a path for EPC fluid pressure to leak to exhaust. Sonnax boost valve kit 104520-12K has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control. The sleeve also has a slightly larger EPC feed orifice to provide quicker throttle response. A new pressure regulator valve outer spring is also included to replace weakened original springs and provides a modest 5 psi increase across the pressure c

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