When Revo tested the secondary air feed (designed to lower emissions during a cold start) they found that it caused turbulence when testing the standard airbox. To solve this problem Revo came up with a standalone secondary air breather unit which enabled increased airflow and improved stability.Maintains OEM LookRequired for Vehicles with secondary air injectionCNC Machined from anodized aluminiumMade from CNC machined 6061 T6 black anodized aluminium, the air pump adapter is designed to replace the plastic OEM component from the stock air box lid. This kit provides increased durability whilst maintaining the OEM look.Featuring a built in three stage foam filter and multiple hole design, this Revo air pump adapter provides improved airflow and stability and is required for vehicles that utilise secondary air injection.Using a 2mm thick 304 powder coated stainless steel bracket, this kit enables increased resistance against engine vibrations and excess movement. This ensures the breath