Mishimoto Subaru WRX 2015-2021 Street Performance Black Top-Mount Intercooler Kit, 2015+ - MMTMIC-WRX-15XBK Caps Steel sleeves are used to

Steel sleeves are used to join the Turbo Inlet Hose to the stock intake and by-pass-valve

frequency-based mass airflow (MAF)

and mild steel O2 bung

The bespoke integrated check valve prevents coolant back flow from the turbocharger and does not require you to remove the factory check-valve before installation

Mishimoto Subaru WRX 2015-2021 Street Performance Black Top-Mount Intercooler Kit, 2015+ - MMTMIC-WRX-15XBK Caps Steel sleeves are used toPRODUCT FEATURES Direct fit for the 2015 2021 Subaru WRX Designed for optimal performance on highly modified vehicles using stage 2+ tuning Power gains of up to 15 whp and 8 wtq on performance tune 35F temperature drop compared to stock intercooler on performance tune 100% aluminum construction with durable cast end tanks TIG welded to a highly efficient bar and plate core Mandrel bent aluminum Mishimoto charge pipe included to increase flow