It might not look like the one on the vehicle but it will once fitted, bargain buy!
Tried to compare this against the original Mercedes part before i bought it, unfortunately as it looks little like a fitted unit i couldn't. So I took a risk and bought it anyway, then compared it with the one on the car, thought oh dear this doesn't look right. So i went ahead and fitted it on my Viano regardless. removing the Mercedes one was a doddle, and then i realised that the new part was built identically. I had to be dead careful not to cross-thread the air fitting but one that was fitted and suspension inflated all looks and works perfectly.