Mercedes-Benz GLS Brake Replacement Parts

The GLS nameplate began with the X166 generation (2016–2019), which was essentially a renamed GL-Class; the second-generation GLS is the X167, running from 2019 onwards with a facelift in 2023. Year matters because the X166 and X167 are entirely different platforms, so brakes from one generation will not fit the other. Always confirm the generation against your registration with the breaker before ordering.

The X166 ran from 2016 to 2019, and the X167 replaced it from 2019, so a 2019 car could be either generation depending on its build date. Because the two generations use different brake components, you need to confirm exactly which platform your car is before assuming a 2016-sourced part will fit. Check your registration with the breaker so they can verify the generation before supplying anything.

Yes, engine size is a genuine fitment factor on the GLS because larger, heavier engines typically require uprated braking systems with bigger discs and callipers. A 3.0-litre diesel GLS and a 4.0-litre V8 AMG-line car are unlikely to share the same brake components even within the same X167 generation. Give the breaker your exact engine designation alongside your registration to make sure the part matches.

Trim levels like AMG Line are largely cosmetic and do not change the braking hardware, so a standard GLS and an AMG Line car of the same generation and engine size should use the same brakes. The full AMG 63 is a different matter, as it runs a significantly uprated braking system matched to its 4.0-litre V8 output, so those parts are specific to that variant. Trim does not affect fitment for the mainstream versions, but expect the breaker's part to look identical to your existing setup rather than any cosmetic differences.

Both years sit within the X167 generation, but 2023 marks the facelift point where some running-gear updates may have been introduced. Whether the specific brake components cross that 2023 facelift boundary without modification is something you need to confirm with the breaker against your registration, as mid-generation updates can affect disc and calliper specifications. Give the breaker both the donor year and your own registration so they can check compatibility directly.

Front and rear brakes are never interchangeable as they are different sizes and types, so always specify axle position when contacting a breaker. For discs and pads, NS (nearside, passenger side) and OS (offside, driver side) are generally interchangeable as they are handed only on some calliper designs, but it is worth mentioning the side to your breaker so they can flag any exceptions. Confirming both axle position and side with the breaker at the point of enquiry avoids any delays in getting the right part.