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Mercedes-Benz GLS Sill Replacement Parts

Need a used Mercedes-Benz GLS sill? Request a free quote from UK vehicle dismantlers and compare offers direct.

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Choosing the right used Mercedes-Benz GLS sill

Used sills vary between vehicles - and whether you call it used, second hand or a replacement, matching the right one matters. These are the details breakers need to match the right part to your car - our request form asks them so you only hear from suppliers with the correct part:

Other used Mercedes-Benz GLS parts

Used sill for other Mercedes-Benz models

Fitment questions

What generation is my Mercedes-Benz GLS and does it affect which sill fits?

The GLS nameplate covers two generations: the first-generation GLS (X166) ran from 2016 to 2019, and the second-generation GLS (X167) launched in 2020 and remains current. Sills are body-specific pressings, so you must match the correct generation — an X166 sill will not fit an X167 and vice versa. When contacting a breaker, quote your registration so they can confirm the exact platform.

Will a sill from a 2017 GLS fit my 2020 GLS?

No — a 2017 GLS is the first-generation X166, while a 2020 GLS is the second-generation X167, and the body structures are completely different. Sills are welded structural panels tied to the floorpan and door apertures, so there is no interchangeability across this generation boundary. Always provide your registration to the breaker to ensure an exact match.

Does the trim level affect which sill fits my GLS — does it matter if mine is a GLS 350d or GLS 580?

No — trim level and engine variant make no difference to sill fitment on the GLS. Sills are determined by the body generation and structure, not by whether the car is a diesel 350d, a petrol 450, or a 580. You may find minor cosmetic differences in cladding or moulding clips between specifications, so mention your exact variant to the breaker so they can match the finish as closely as possible.

Does it matter whether my GLS has AMG Line body styling when buying a replacement sill?

AMG Line and standard GLS models can have different lower sill trims or decorative cladding panels fitted over the structural sill, so the cosmetic appearance may differ. The structural sill itself is the same pressing regardless of trim, but if your car has AMG Line side skirt extensions you will want to source a donor car with the same specification to keep the look consistent. Confirm with the breaker what cladding and moulding is included with the sill they are selling.

The GLS is only sold as a seven-seat SUV — do I need to worry about body style when buying a sill?

The Mercedes-Benz GLS has only ever been offered in a single five-door SUV body style in the UK, so body style is not a variable you need to worry about here. What still matters is the generation — X166 or X167 — as those differ completely. Give your registration to the breaker and they can confirm the correct panel straight away.

Could a sill from a Mercedes-Benz GLE fit my GLS, given they share a platform?

The GLE and GLS share related underpinnings within their respective generations, but they are different vehicles with different overall dimensions, door apertures, and body pressings. Whether sills from the same-platform GLE cross over to the GLS is something you should confirm directly with the breaker against your registration, as mid-generation pressing differences and variant-specific details make this uncertain. Do not assume compatibility without the breaker verifying part numbers against both donor and recipient vehicles.