vacuum test stand kit sonnaxSonnax Vacuum Test Stand Kit The Sonnax Vacuum Test Stand Kit (VACTEST 01K) is an essential tool for diagnosing valve and valve body wear in transmissions. Worn valves or bores can cause incorrect pressures, leading to poor performance or transmission failure. This kit provides a reliable and repeatable method to evaluate bore condition, confirm repairs, and ensure proper transmission function. Ideal for diagnosing valve bodies or verifying