6 pcs 22mm bungs, one plate for each cylinder.
The bungs are machined from high grade aluminium using state of the art CNC technology.
The O rings are supplied with the bungs.
Easy to install. Directly swap with your existing swirl flaps, simply push in and screw in place.
There will be no difference in performance from you vehicle, you may even notice an improvement if your swirl flaps have deteriorated.