Used Mercedes-Benz B-Class Bonnet Strut

Yes, the B-Class uses gas-charged bonnet struts rather than a prop rod, so this is a genuine part you can source from a breaker. There are typically two struts, one on each side, holding the bonnet open when raised.

No — the W245 (first generation, 2005–2011) and the W246 (second generation, 2011–2018) are entirely different platforms with different bonnets, so the struts are not interchangeable. You need to make sure you're searching within the correct generation for your car.

The W246 ran from 2011 to 2018 with a facelift arriving around 2014, and while bonnet struts are generally a mechanical fitment tied to the bonnet itself, it's worth confirming with the breaker whether the bonnet or its mounting geometry changed across the facelift before buying. Quote your registration to the breaker so they can check the part number against your exact build.

No, trim level does not affect bonnet strut fitment on the B-Class — Sport, Urban, SE and other trim variants share the same bonnet and strut mounting across a given generation. The trim only affects interior and cosmetic items, not the front-end mechanical components like struts.

It's strongly recommended to replace both struts together, as they wear at a similar rate and a single weak strut can cause the bonnet to sit unevenly or drop unexpectedly. Buying a matched pair from the same breaker's donor vehicle is the most reliable approach.

No, the engine variant does not affect bonnet strut fitment on the B-Class — the bonnet and its struts are shared across petrol and diesel engines within the same generation. Simply match the generation (W245 or W246) and confirm across any facelift boundary with the breaker using your registration.