Mercedes-Benz GLC Exhaust Manifold Replacement Parts

Yes, but only on petrol-engined GLC variants — the petrol units (such as the M274 four-cylinder and M256 six-cylinder engines) use a conventional exhaust manifold. Most diesel GLC models (OM651 and OM654 engines) integrate the exhaust manifold directly into the cylinder head as part of a 'manifold-in-head' design, meaning there is no separate, removable exhaust manifold to replace on those diesels. If you drive a diesel GLC and think you have a manifold problem, it is worth checking with a specialist, as the part you actually need may be the cylinder head itself or associated components rather than a standalone manifold.

The GLC ran in its first generation (X253) from 2015 to 2022, with a facelift arriving in 2019, so a 2016 and a 2020 are both X253 generation cars. However, the facelift brought emissions and engine updates — including the shift to Euro 6d-compliant variants — so while the generation body is the same, whether a pre-facelift manifold crosses the 2019 boundary cleanly depends on whether the engine code is identical on both cars. Match engine codes carefully and confirm compatibility with the breaker against your specific registration before buying.

For standard GLC trims like Sport and AMG Line, trim level does not affect exhaust manifold fitment — what matters is the engine code and fuel type, not the badge on the tailgate. The exception worth noting is the full AMG performance variants (GLC 43 and GLC 63), which use different engines entirely (the M276 V6 and M177 V8 respectively) and will have their own distinct manifold arrangements. If you are shopping for a manifold from a breaker, lead with the engine code rather than the trim name and you will avoid mismatches.

Yes, significantly — petrol and diesel GLC engines are built very differently, and a manifold from a petrol engine is not interchangeable with anything from a diesel. As noted, most diesel GLCs do not have a separate exhaust manifold at all, so confirming your fuel type and engine code upfront will save you time when approaching a breaker. Never assume a part will fit based on the model name alone; always supply your registration so the breaker can verify the exact engine fitted.

The M274 engine family was used across several Mercedes-Benz models including the C-Class (W205), the GLC (X253), and others, and the core block and manifold architecture are closely related. In principle, manifolds from the same engine code and emission standard could interchange, but mounting orientations, sensor ports, and heat shield clearances can vary between body styles and model years. This is strong confirm-with-the-breaker territory — give them both registrations or at minimum both engine codes and model years so they can verify before any money changes hands.

For petrol GLC models, the Euro 5 to Euro 6 boundary is the key dividing line — the GLC launched in 2015 already on Euro 6, but subsequent updates brought Euro 6b, 6c, and 6d variants with changes that can affect exhaust system components including the manifold and any integrated sensors. Fitting a manifold from the wrong emissions era could affect how sensors read exhaust gases and may cause engine management faults. Always check that the manifold matches your engine code and the emissions standard of your specific car, and if you are unsure whether DPF or catalytic converter compatibility is a factor, confirm specifics with the breaker against your registration.