Sonnax 4L80E Boost Valve & Sleeve (#34200-01K)
These problems are usually caused by reverse boost oil that enters the torque signal circuit due to a wear-created cross leak at the sleeve. The Sonnax boost valve kit 34200-01K eliminates these problems.
Sonnax 4L80E Actuator Feed Limit Valve Kit (#34200-16K)
The actuator feed limit (AFL) valve in GM 4L80-E and 4L85-E units has a large reaction area and is greatly affected by side loading, which wears the valve body bore. The EPC solenoid oscillates the torque signal and AFL oil, which increases valve action and accelerates wear. As bore wear increases, oil pressure is reduced to the shift solenoids, which causes solenoid and ratio codes. The same AFL oil loss results in lower line pressure.Installing Sonnax actuator feed limit valve kit 34200-16K corrects AFL oil pressure loss, restoring shift solenoid pressure to prevent wrong gear starts and other shift concerns. The hard-coat anodized valve is extremely wear resistant, and annular grooves have been added to minimize the effect of side loading. The Sonnax wear-resistant sleeve provides more valve contact area, providing additional support and further reducing valve and bore wear.Kit includes wear-resistant sleeve and anodized valve with annular grooves to prevent side loadingValve operates in full-contact sleeve, providing 54% more supportBoosts oil pressure to the shift solenoidsEliminates AFL oil loss, corrects low line pressure
Sonnax 4L80E Self-Regulating Boost Valve & Sleeve (#34200-10K)
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. Boost valve spools have annular grooves to reduce side-loading that causes wear.
Sonnax 4L80E Boost Valve & Sleeve (#34200-03K)
Common problems in vehicles with GM 4L80-E and 4L85-E transmissions are uncontrollable line rise (upward of 500-600 psi), high line pressure in Reverse, buzzing noise, broken direct clutch drums and/or broken cases. These problems are usually caused by Reverse boost oil that enters the torque signal circuit due to a wear-created cross leak at the sleeve. High line pressure and buzz is created by oil leakage past the aluminum balance plug. Sonnax boost vavle kit 34200-03K eliminates these problems.Hardened steel boost valve with over 20% wider spools to provide better durability and increased sealing contact areaBoost valve spools have annular grooves to reduce side-loading that causes wearValve and sleeve are manufactured to close tolerances to restore proper clearance and hydraulic integrityKit includes a replacement aluminum balance oil plug with an O-ring to ensure proper sealing and adequate back pressure on the pressure regulator valveDrop-in Zip Valve� parts install quickly and easily
Sonnax 4L80E 4L85E Line-to-Lube Pressure Regulator Valve Kit (#34200-14K)
TranzDepot is proud to be part of the Sonnax network of global distributors.
Sonnax 4L80E Smart-Tech Overrun Clutch Valve Kit (#34200-40K)
Sonnax designs, develops and manufactures the highest quality aftermarket automotive products. TranzDepot is proud to be part of the Sonnax network of global distributors. For more information on this or any other Sonnax part, please contact us through messaging and we will be happy to assist you with product selection, technical questions and more. We guarantee authenticity on these genuine Sonnax components.
Sonnax Transmission Pressure Regulator Valve Kit, Line-to-Lube 4L80E (1991-Up)
Sonnax 4L80-E 4L85-E 3rd & Reverse Checkball Sleeve Kit (#34200-47K)
Sonnax designs, develops and manufactures the highest quality aftermarket automotive products. TranzDepot is proud to be part of the Sonnax network of global distributors. For more information on this or any other Sonnax part, please contact us through messaging and we will be happy to assist you with product selection, technical questions and more. We guarantee authenticity on these genuine Sonnax components.
4L80E 4L85E Transmission Boost Valve with Relief Sonnax 34200-10K
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. for your Transmission to be a 4L80E.
34200-10K – 4L80E 4L85E, BOOST VALVE KIT, ENCAPSULATED VALVE, O-RING, SONNAX
SONNAX NUMBER: 34200-10K. Valve Bodies are sold as remanufactured. All parts that are worn are replaced with either OEM parts or Sonnax rebuild parts. Usually they are sold with solenoids intact – as pictured.