Can a mzb 380sel transmission be installed on a 420sel car?

Yes, a transmission from a 380SEL can be installed on a 420SEL, as both vehicles share similar platform designs and components. However, it's important to ensure compatibility in terms of mounting points, fluid connections, and electronic controls. Some modifications may be necessary, and it’s advisable to consult a professional mechanic or refer to specific service manuals for detailed guidance.