Used Mercedes-Benz GLS Inlet Manifold

All petrol-engined GLS models have an inlet manifold, but diesel variants (the GLS 350d and GLS 400d) use a different style of intake system and the term inlet manifold is less commonly applied in the same way — if you have a diesel, confirm with the breaker exactly what component you need. The petrol units (such as the GLS 400, GLS 450, GLS 550, and GLS 580) all carry a conventional inlet manifold as part of their turbocharged engine setup. Check your fuel type on your V5 before requesting quotes.

These are completely different generations on different platforms with redesigned engines, so a direct swap across that boundary is very unlikely. The X166 GLS ran engines such as the M276 and M278, while the X167 moved to units like the M256 and M176, meaning the inlet manifold designs will differ. Name both your generation and your engine code when requesting quotes, and let the breaker confirm compatibility against your registration.

Both fall within the X166 generation (2016–2019) and are likely to share the same M276 petrol engine, making a match plausible. However, ancillary and mounting details can change mid-production even within a generation, so confirm with the breaker against your registration before agreeing a purchase. Supplying your engine code from your V5 or a VIN check is the most reliable way to get an accurate match.

Trim level alone does not affect inlet manifold fitment — the part follows the engine, not the badge or trim pack. A Grand Edition and an AMG Line car on the same engine code will use the same manifold; only the AMG 63 (with its M177 bi-turbo V8) requires a different unit specific to that engine. Focus on matching your engine code rather than your trim name, and note that a part pulled from a higher-trim donor car may come with ancillary brackets or sensors attached that differ cosmetically — confirm those details with the breaker.

The engine code is the single most important detail — it is printed on your V5 logbook or can be retrieved via a VIN check, and it tells a breaker exactly which manifold your car needs, overriding any uncertainty about model year or trim. Fuel type matters too: make sure you and the breaker are both clear whether you have a petrol or diesel, as the intake components differ. If you can also supply your registration, a reputable breaker can cross-reference everything before sending the part.

The inlet manifold itself is not an electronically coded component in the same way as, say, an ECU or fuel injector, so straightforward swapping is generally less of a concern. However, if the used manifold comes with sensors such as a MAP sensor or tumble-flap actuator motor attached, compatibility of those individual components with your vehicle's system is worth querying with the breaker. Confirm with the breaker against your registration whether any ancillary parts need to be transferred from your original manifold or replaced separately.