September 30, 2005
Hyundai and Kia vehicles with A4CF1, A4CF2 transmissions may exhibit converter related complaints and transmission overheat. This may be caused by severe wear at the TCC regulator valve, allowing valuable converter regulator pressure to exhaust and significantly reducing lubrication oil. The drop-in Sonnax TCC regulator valve kit 84741-07K restores the critical hydraulic clearance between the valve and bore, and blocks the casting wear from exhausting critical pressure. The valve and sleeve are made from highly wear-resistant material, provide nearly double the sealing engagement over OE and have features to aid in valve centering.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
A vacuum test at the port indicated fails to hold at least 18 in-Hg.