MST Turbo Inlet Hose - BMW N13 F20 F21 F30 F31) is the perfect addition to any engine bay. Give your vehicle added horsepower, torque, snappier throttle response, and an aggressive turbo sound.KEY FEATURES Wire-Reinforced Multi-Ply Silicone Construction Maintains Large Inside Diameter and Smooth Inside Surface for Increased Flow Eliminates Restrictive Factory Corrugated Design for Improved Performance Direct Drop-In Replacement of Factory Hose VEHCILE FITMENT GUIDE  MAKE MODEL YEAR ENGINE(S) BMW 116i F20 / F21 N13 BMW 118i F20 / F21 N13 BMW 120i F20 / F21 N13 BMW 316i F30 / F31 N13 BMW 318i F30 / F31 N13 BMW 320i F30 / F31 N13 Note: Please ensure this product is compatible with your vehicle prior to placing an order with us. If you have any questions, please contact us. NOTE: Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.