febi bilstein 30533 Radiator Cap for coolant expansion tank,black|green|grey, pack of one

Original part quality, perfect fit.

worked and fitted as advertised.

Fits, works.

I used for Mercedes Benz c class 2012 blue efficiency and fits ok but there us little leak as you can see in the photo. No warning on the dashboard so I assume it sealed

I was losing coolant in my Merc CLK due to the seal on the original cap going hard and the coolant venting to the outside of the expansion bottle before it got to the correct pressure required for the system.I wanted to try this cap before ordering a replacement from Mercedes, to see if it cured the issue.Not only did it cure the issue, it is such a good quality cap that I haven’t bothered buying a Merc one-job done for a fiver! Fitted it and drove a 1000 mile round trip from Dorset to Scotland and back the next day, not a drop of coolant lost. A month later and all is still perfect!

I bought this for my w204 2012 c220 sport. I had coolant loss and could see staining on the coolant bottle. I replaced the cap for this new one and no more topping up the coolant . Looks to be a quality product. Would recommend

Cheap and nasty : didn’t seal at all

It fits to my Mercedes CLS coupe 2011