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Sonnax 4L80E/4L85E Boost Valve And Pressure Spring Upgrade 4L80E-LB1 S-4L80E-LB1

Valve, Spring, Booster, Sonnax
Price on request
Transmission model:
  • New
  • Aftermarket

Which cars does this part fit? CLICK

  • Transmission Parts Now
  • +1 971-226-8390
  • Located in Beaverton, 14350 SW 22nd St, United States of America (USA)


This part is New and fits your 4L85E, it is made by Sonnax. Valve is an important part of 4L85E transmission. On you will find best deals from worldwide suppliers of New, Aftermarket parts for 4L85E and other automatic transmissions.
Information about basic repairs for 4L85E can be read here.

The boost valve assembly operates to increase line pressure in cases of heavy loads in response to fluid pressure, which is proportional to motor torque.

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