Second Hand Mercedes-Benz B-Class Curtain Airbag

Yes, curtain airbags (also called side curtain or head airbags) were fitted to the Mercedes-Benz B-Class as standard safety equipment across its generations, including the first generation (W245, 2005–2011) and the second generation (W246, 2012–2018, facelifted 2014). They run along the roofline on each side and deploy to protect occupants' heads in a side impact. This means used curtain airbags are a genuine and commonly sourced part from B-Class breakers.

Both years fall within the second-generation W246 B-Class (2012–2018), so they share the same basic body structure, which is a promising starting point for fitment. However, the W246 received a facelift in 2014 and there may be differences in the SRS system between pre- and post-facelift cars, so you should confirm compatibility with the breaker against your exact registration before buying. Curtain airbags are safety-critical parts and must be professionally fitted by a qualified technician.

No — the W245 and W246 are entirely different generations with different body shells, rooflines, and SRS systems, so curtain airbags from these two generations are not interchangeable. Always source a curtain airbag that matches your car's generation, and confirm compatibility with the breaker against your registration. As a safety-critical component, professional fitting is strongly recommended.

For curtain airbags, the trim level — whether SE, Sport, AMG Line, or others — does not typically affect which unit you need, as these airbags are tied to the body generation rather than the trim specification. You may find minor differences in interior finishing around the headlining where the airbag is concealed, but the airbag module itself should be consistent across trims within the same generation. Always confirm the specific module compatibility with the breaker against your registration, as airbag system calibration can vary.

Yes, curtain airbags are side-specific — the nearside (NS, passenger side) and offside (OS, driver side) units are different and not interchangeable. When contacting a breaker, make sure you specify clearly which side you need. As these are safety-critical single-use components, ensure the unit you source has never been deployed and have it fitted professionally.

A used curtain airbag is acceptable to fit provided it has never been deployed, as airbags are single-use and a deployed unit cannot be reused. A reputable breaker should be able to confirm the deployment status of the part before sale. Because curtain airbags are safety-critical components, professional fitting by a qualified technician is strongly recommended — do not attempt to fit one yourself.