MST Performance Mercedes Benz A250/CLA250/GLA250 Air Intake Kit

MST Performance Air Intake Kit – Mercedes Benz A250, CLA250 & GLA250 (MST-MB-A2502)

If you want more response and a little more power from your Mercedes 2.0 turbo engine, this air intake kit from MST Performance is a straightforward and effective upgrade. It replaces the standard airbox and inlet pipe with a freer-flowing setup that gets cooler, denser air to the turbocharger more efficiently – which is exactly what a forced-induction engine (one that uses a turbo or supercharger) benefits from most.

MST Performance have built a solid reputation for producing well-engineered intake kits at a sensible price point, and this kit for the A250, CLA250 and GLA250 is a good example of their approach: quality components, a proper heat shield, and a filter that is built to last.

What Does It Do?

The standard airbox on these Mercedes models is designed with cost and packaging in mind, not outright performance. It restricts airflow to some degree and limits the intake noise that many drivers actually enjoy. This MST kit opens that up – the larger bore inlet pipe and high-flow pleated filter allow the engine to breathe more freely, which can improve throttle response (how quickly the engine reacts when you press the accelerator) and unlock a modest power gain.

Dyno testing (measuring power output on a rolling road) has shown gains of up to 12-14bhp, though real-world results will vary depending on your vehicle’s condition, whether it has been tuned, and other factors. On a standard car, expect a noticeable improvement in response and a more involving intake sound rather than a dramatic headline power figure. On a tuned car, the gains can be more pronounced as the engine is already being pushed harder and benefits more from improved airflow.

What’s Included?

• Black powder-coated heat shield – helps keep hot engine bay air away from the intake, ensuring the turbo receives cooler, denser air
• Black powder-coated inlet pipe – a quality, durable replacement for the standard plastic pipework
• Red dry pleated high-flow air filter – easy to clean and re-use, no oiling required
• Full fitting hardware and step-by-step instructions

Why Choose This Kit?

The dry pleated filter is worth highlighting – unlike some performance filters that require oil to work correctly, this one is a dry type, meaning maintenance is simple. Remove it, clean it, refit it. There is no risk of oil contamination reaching your mass airflow sensor (the sensor that measures how much air enters the engine), which is a known concern with oiled cotton gauze filters.

The powder-coated heat shield is also a practical inclusion rather than a cosmetic one. Keeping intake temperatures down is important for turbocharged engines, as cooler air is denser and produces a more efficient combustion – contributing directly to the performance improvement this kit offers.

Installation is achievable at home with basic mechanical knowledge and common tools, though if you are not confident working in the engine bay, a garage fitting is always a sensible option.