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Mercedes-Benz GLS Curtain Airbag Replacement Parts

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What to check when buying a used Mercedes-Benz GLS curtain airbag

A used curtain airbag that fits one vehicle won't always fit another - even within the same model range. These questions help breakers match stock to your exact vehicle before they quote:

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Used curtain airbag for other Mercedes-Benz models

Fitment questions

Does a curtain airbag from an older Mercedes-Benz GLS fit my newer one?

The GLS has two main generations: the first generation (X166, 2016–2019) and the second generation (X167, 2019–present), and curtain airbags are not interchangeable across this boundary as the body structure and SRS systems differ between generations. Within the same generation, fitment is much more likely, but you should still confirm with the breaker against your registration to ensure the airbag module is compatible with your specific SRS system before purchasing.

Does a curtain airbag exist on the Mercedes-Benz GLS at all?

Yes, curtain airbags are fitted to all variants of the Mercedes-Benz GLS across both generations — they are a standard safety feature on this large SUV regardless of engine choice or drivetrain. The GLS is a five-door vehicle throughout its production, so there are no body style variants to consider; you simply need to ensure you source the correct side (nearside or offside) for your vehicle.

Does the trim level affect which curtain airbag I need for my Mercedes-Benz GLS?

Trim level — such as AMG Line or standard specification — does not affect curtain airbag fitment on the GLS, as the airbag system is consistent across the range within each generation. However, confirm with the breaker against your registration to rule out any build-specific SRS configuration differences, as these can occasionally vary on higher-specification vehicles.

Does it matter whether I buy a nearside or offside curtain airbag for my Mercedes-Benz GLS?

Yes, side matters — the nearside (NS) curtain airbag fits the left (passenger) side of the vehicle, and the offside (OS) fits the right (driver) side, and they are not interchangeable. Make sure you identify which side needs replacing before approaching a breaker, as fitting the wrong side is not possible.

Will a 2018 GLS curtain airbag fit a 2020 GLS?

A 2018 GLS is a first-generation X166 model, while a 2020 GLS is a second-generation X167, so these sit either side of the generation boundary and the curtain airbags are very unlikely to be compatible due to differences in body structure and SRS systems. You should confirm this directly with the breaker against both registrations before purchasing.

Is it safe to fit a used curtain airbag myself on my Mercedes-Benz GLS?

Curtain airbags are safety-critical components and we strongly recommend having a used curtain airbag professionally fitted by a qualified mechanic or auto-electrician who can also check and reset the SRS system. Curtain airbags are single-use items — once deployed they cannot be reused — so always ensure the unit you're buying has never been triggered, and ask the breaker to confirm this before purchase.