Very happy with this original and genuine Bosch alternator. I have a 2001 CLK430, and these vehicles had two different kinds of Bosch alternators fitted. As I chose this instead of my previous alternator version, I needed to visit the self service wrecking yard to collect the correct D plug that I was lacking. Perfect fit, worked straight away without errors, and held 14.1V +/-0.1V during the course of normal driving, which is perfectly within specifications. Very happy with this product, and it should suit a variety of different mercedes vehicles.