Second Hand Mercedes-Benz GLS Intercooler

Yes, but only on the turbocharged engine variants — all petrol and diesel GLS engines are turbocharged, so every GLS sold in the UK does have an intercooler. The intercooler cools the compressed air from the turbocharger before it enters the engine, and it is a genuine mechanical component on this model. If you are unsure whether your specific variant is turbocharged, a VIN check or your V5 will confirm the engine code.

The Mercedes-Benz GLS runs across two main generations: the first-generation X166, produced from 2016 to 2019, and the second-generation X167, which launched for 2020. A 2016 intercooler is from the X166 and a 2020 unit is from the X167, so these are different generations with different engine families and the parts are very unlikely to interchange. Always confirm the engine code from your V5 or a VIN check and route the question to the breaker before purchasing.

Trim level does not affect intercooler fitment — AMG Line is a cosmetic and equipment package, not a different engine, so if both cars share the same engine code the intercooler is the same part. What matters is the engine code, fuel type, and whether it is from the same generation (X166 or X167). Confirm the engine code on your V5 and pass it to the breaker, and the trim badge can be ignored entirely for this purchase.

The 350d and 400d are different diesel engine variants — the 350d (OM642 family, 3.0-litre V6) and the 400d (OM656, 2.9-litre inline-six on the X167) are not the same engine, so their intercoolers are unlikely to be interchangeable. The engine code on your V5 is the most reliable way to identify exactly which intercooler you need. Give that code to the breaker rather than relying on the badge, as Mercedes frequently changes engine designations across facelifts and generations.

The X166 GLS ran from 2016 to 2019 and received a facelift in 2019 for its final model year, which can bring ancillary and mounting changes that may affect whether an intercooler from an early X166 swaps cleanly into a later one. The engine code is your most important reference point, and if your car sits close to or after that 2019 facelift point you should confirm with the breaker against your exact registration before buying.

The single most useful detail is your engine code, which you will find on your V5 document or through a VIN check — this tells the breaker the exact engine family and rules out mismatches that the badge alone would not catch. You should also confirm whether it is petrol or diesel, your gearbox type, and the model year. Trim level and body colour are irrelevant for this part, so focus on the mechanical details to get the most accurate quotes.