The performance package for the BMW E90-serie 335d consists of the intercooler upgrade kit, the downpipe kit and fits the following vehicles. BMW 335d E90/91/92/93 (2006-2011) Intercooler Upgrade Kit 200001029 This Performance intercooler has the following core size (520mm x 200mm x 150mm / stepped = 13.000 cm³ ), providing a 50% larger frontal area and 70% more volume compared to the original intercooler. Our engineers have increased the intercooler core size and efficiency, as well as improved the end tank design to remove any OEM bottlenecks, resulting in increased flow rating and charge cooling properties. High-performance Intercooler core with turbulators in a stepped design (weight: 9,2kg). Constructed of the highest quality Bar and Plate intercooler cores combined with cast aluminium optimized by CAD. Flow analyses and simulations were created to optimise the design for best possible Internal Airflow. This intercooler is the best choice when it comes to performance gains and low intake temperatures. A lot less pressure drop then OEM Intercooler. Anti Corrosion protective Coating with perfect thermal heat dissipating character. Optimal cooling with clearly more power. Kit is ready for installation (plug & play), using the stock plumbing. No cutting or bumper removal required. Fitment is easy, replacing the OEM intercooler. All of our products undergo rigorous quality control. Package: 1 Charge air cooler 1 Mounting hardware 1 Installation instructions Downpipe-Kit 500001009 Replacement for OEM BMW Part# 18308508523 made out of SS304 100% perfect fit, 1:1 OEM replacement less thermal load on the turbocharger more power by reducing back pressure significantly more torque *ECU will need to be coded to avoid engine management light errors.