Crafted with CNC-machined 6061-T6 billet aluminum, the SpeedFactory Racing Billet B-Series Breather Port Plug is designed to block off the OEM "black box" breather port on Honda/Acura B-Series engines. Its dual O-rings create a reliable, leak-free seal, and its black anodized finish increases durability and protects against corrosion. Use this plug to complement aftermarket oil catch can/breather systems, and bolster engine ventilation for high-performance engines. Before installation, coat parts with Honda Bond or Permatex Ultra Grey to help secure the plug into the block and prevent blowouts in high pressures. With its dependable construction and laser etched SpeedFactory “SF” logo, this plug is the ideal solution for upgrading or protecting your engine.
