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Sonnax 34200-10K Transmission Boost Valve & Sleeve Kit, Self-Regulating

Sonnax 34200-10K Transmission Boost Valve & Sleeve Kit, Self-Regulating

by Sonnax
SKU S34507HRK
$66.67 - $66.67
$66.67
$66.67 - $66.67
$66.67
Availability:
in stock, ready to be shipped

Delivery time

You will receive your package in 2–5 business days within the contiguous U.S.

Brand: Sonnax

Other Part Number: S34507RAK

Interchange Part Number: S34507HRK

Items Included: Boost Valve Kit

Manufacturer Part Number: 34200-10K

Material: Steel

Universal Fitment: Yes

Vintage Part: No

Performance Part: Yes

4L80-E, 4L85-E Transmission

Boost Valve Kit
Part No. 34200-10K

With encapsulated relief valve.

Common problems in vehicles with GM 4L80-E and 4L85-E transmissions include uncontrollable line rise (upward of 500 psi), high line pressure in Reverse, broken direct clutch drums and/or broken cases. These problems can be caused by excessive EPC torque signal pressure. Sonnax self-regulating boost valve kit 34200-10K eliminates these problems by limiting EPC pressure.

  • Hardened steel boost valve has an encapsulated relief valve that will allow EPC pressure to exhaust if it exceeds 95-105 psi
  • Boost valve with over 20% wider spools to provide better durability and increased sealing contact area
  • Boost valve spools have annular grooves to reduce side-loading that causes wear
  • Closely toleranced sleeve restores the hydraulic integrity between the valve and sleeve
  • O-Rings have been added to the sleeve to provide a positive seal that compensates for pump bore wear
  • Valve
  • Sleeve
  • O-Rings (2)

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