The UPD M156 6.2 litre N/A 2006-2011 Cold Air Induction spacer Kit is a simple and clean bolt on kit to add instant horsepower by increasing air flow into the engine by over 30% . All hardware and 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 more air volume to the air boxes, plus all hardware to give seamless a OEM look and opening up the filter for 100% air flow through the filter 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 air box spacer KIT comes with  high quality aluminum brackets, spacers and  stainless steel screws to bolt all engine covers and air filter box in a seamless kit.