MST Performance Air Intake Kit – Mercedes-Benz A45 / CLA45 AMG (MST-MB-A4501)
If you want more from your Mercedes-Benz A45 or CLA45 AMG, improving the way your engine breathes is one of the most straightforward upgrades you can make. This air intake kit from MST Performance replaces the restrictive factory airbox with a free-flowing induction setup, helping your turbocharged engine pull in more cold air more efficiently.
The result is improved throttle response – meaning the engine feels more immediate and eager when you press the accelerator – along with a more satisfying induction sound under hard acceleration. On a standard car or one that has already been tuned, this kit is a solid foundation for performance improvement.
Performance Gains
MST Performance’s own dyno testing (testing carried out on a rolling road to measure power output) shows potential gains of 12 to 14bhp over the standard setup. It is worth noting that real-world results can vary depending on the condition of your vehicle, any existing modifications, and how the car is driven. These figures are a realistic guide, not a guarantee.
What’s Included
- Black powder-coated heat shield – helps keep warm engine bay air away from the intake
- Black silicone inlet pipe – durable and heat-resistant connection between the filter and turbo
- Red dry pleated performance filter – easy to clean and maintain, no oiling required
- Full fitting hardware and step-by-step installation instructions
Why MST Performance?
MST Performance design their intake kits specifically for each application, rather than using generic parts. The powder-coated heat shield is shaped to sit correctly within the engine bay, directing cold air straight to the turbocharger (the forced induction unit that pushes compressed air into the engine). This is important because cooler, denser air allows the engine to work more effectively and produce more power.
The dry pleated filter is a practical choice for everyday use – it does not require oil treatment like some performance filters, making servicing simpler and less messy.
Fitment note: This kit is designed for the Mercedes-Benz A45 AMG and CLA45 AMG. Please use the vehicle lookup tool on this page or check the Vehicle Fitment tab to confirm compatibility with your specific model and engine variant before purchasing.
Additional Information
| Weight | 4 kg |
|---|---|
| Dimensions | 62 × 48 × 27 cm |
| Brand |




