The UPD M278 4.9 litre Biturbo 2011-2020 Cold Air Induction spacer Kit (Filters not included) is a simple and clean bolt on kit to add instant horsepower by increasing air flow into the engine by over 30% . All hardware parts included. The UPD (CAIK spacer kit) eliminates the restrictive air box inlet design found with the OEM air box and filters by raising the air filters up out of the inlet. Adding a high flow air filters will give max hp gains. Plus all hardware included to give seamless a OEM look and opening up the filter for 100% air flow VS only 55% with oem. The restrictive area directly under the air filters is also improved by up to 50%, so more air can flow under and across the filter. Our kit allows for maintaining a stock engine bay look but with cold air intake power flow gains! The UPD CAIK spacer kit comes with high quality aluminum brackets, spacers and special stainless steel German made hardware to bolt all engine covers and air filter box in a seamless kit. Our kit is designed and tested to work with our custom high flow air filters up 18-20 hp gains are attainable by adding the UPD Cold Air Induction kit to the M278 engine. Spacers included are BLACK coated and not red like in some pictures shown. **** Note, picture of filter and parts will vary from model car / engine and not all parts may match your model. This kit does not include air filters and high flow filters will max hp gains combined with kit.