The channel plate/lower cover checkball and spring in the various VW/Audi 01M, 01N and 01P units aid in controlling solenoid regulator pressure. When the spring breaks or collapses, proper fluid control is not maintained, resulting in 2-3 and 3-2 shift complaints. Sonnax checkball spring 119940-20 restores proper fluid control.

Direct replacement
Maintains proper solenoid regulator pressure control

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