For 6HP21 X, 6HP19, 6HP19 X, 6HP21, 6HP19Z ZF 6 Speed Gearbox only This listing is for a complete kit designed to service the transmission sump on your ZF 6-speed gearbox. Over time, the factory plastic transmission sump can warp, leading to fluid leaks. While main dealers classify these sumps as lifetime components, we recommend replacing the transmission filter to maintain optimal performance. Symptoms such as jerky gear changes and missed shifts may indicate that a transmission service is due. Additionally, servicing the transmission before tuning your vehicle is highly recommended to ensure maximum performance and longevity. To Fit The Following Vehicles: BMW 123d 2.0 E87 08/07-12/10 320i 2.0 E92 02/07-12/13 118i 2.0 E81 02/07-07/12 325i 2.5 Touring E91 .
