Aeroflow S S Male 4 To 1 8 Npt AF380-04 ball bearing These holes enhance ventilation and

These holes enhance ventilation and help maintain optimal engine performance by efficiently managing crankcase pressure

Unscrew the unwanted fitting and replace it with the included blanking plug

Built for serious street

an optional accessory kit BM75498 is required

Aeroflow S S Male 4 To 1 8 Npt AF380-04 ball bearing These holes enhance ventilation and1 8" NPT to Male 4AN Stainless Steel NPT to AN Adapter. 1 8" NPT Male to 4AN Male. Aeroflow Performance have designed this 304 stainless steel 1 8" NPT to 3AN and 4AN for applications such as turbochargers and radiator necks. Being a 304 stainless steel it can withstand extreme heat and is high strength compared to the standard alloy fitting which can break over time in racing applications.