ZF8HP Archives - Transmission Digest
RatioTek introduces new transmission tuner kits for Ford, BMW, ZF

RatioTek has introduced two new transmission tuner kits: one for Ford and BMW applications, the other for ZF transmissions. The RT‐6R80‐PR and RT‐6R80‐PRX products are suited for Ford 6R60/75/80/90/100 and BMW ZF6HP26 ‐ ZF6HP28 six-speed rear-wheel drive applications from 2005 through 2022. The RT‐8HP75‐PR and RT‐8HP75‐PRX tuner kits, meanwhile, are suited for ZF8HP45/70/90/95 eight-speed rear-wheel

RatioTek-RT-8HP75-to-combine
Sonnax highlights solenoid test manifold kit

Sonnax highlights its solenoid test manifold kit (part no. 35430-VTK), which allows users to verify solenoid internal sealing integrity in ZF8HP45/55/70 and Chrysler 845RE transmissions. According to Sonnax, the leading cause of solenoid failure in these units is an inability to maintain an internal mechanical seal, resulting in a multitude of drivability concerns. This kit