This is a performance enhancing induction kit for the B58 engine M340i G20/G21/G22/G23 and M240i G42. Features Improved throttle response Black powdercoated heat shield and inlet pipe Dyno results: max gains 12-14bhp (this may vary dependant on vehicle) Easy to maintain dry pleated filter Cold air straight to the turbo charger What Does It Do? This induction kit delivers increased air flow and induction noise over the standard restrictive air box. Whether this kit is being installed to a standard vehicle or to a already tuned vehicle, you can be sure of the positive performance gains this will deliver. What Will I Get? MST Performance utilise the top quality components in all of their kits see below for what this kit will include.. Black powdercoated heat shield Black powdercoated 4" inlet pipe 4" red pleated filter Silicone joiner Full fitting kit with easy step by step instructions Fits: BMW 2 Series (G87//G42) 3.0 (B58) 2021-2025 BMW 3 Series (G20/G21/G28/G81) 3.0 (B58) 2019-2025