SONNAX 34200-10K VALVE, 4L80E BOOST VALVE 1991-UP (SELF REGULATING WITH O-RINGS)

$ 59.99

Description

VALVE, 4L80E BOOST VALVE 1991-UP (SELF REGULATING WITH O-RINGS)4L80E, 4L85E

Boost Valve Kit

Part No. 34200-10K

  • Valve
  • Sleeve
  • O-Rings (2)

With built-in relief

Common problems in vehicles with a 4L80E transmission 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. The Sonnax self-regulating reverse boost valve 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.

NOTE: Kit includes instructions to retrofit parts dating back to 1989.

Additional information

Weight 1 lbs
Dimensions 4 × 4 × 2 in