3" Billet Aluminum Weld On Filler & Cap CAT BACK Variable subsonic filter: 50Hz -

Variable subsonic filter: 50Hz - 5KHz

Bolt holes are 50mm apart

This listing is for one solenoid cover for Honda's B-series

greater airflow

this BOV is sized perfectly to relieve any amount of boost pressure without fear of compressor surge

3" Billet Aluminum Weld On Filler & Cap CAT BACK Variable subsonic filter: 50Hz -Billet aluminum weld on filler and cap Anodized black finish O ring included for the cap. Easy to weld to rocker covers and custom tanks where filler cap requires. Can be used as a valve cover fill cap, custom surge tank cap and coolant overflow tank etc. Outer diameter: 79mm Inner diameter 58mm Height: 38mm