22 mm and 33 mm Swirl Flap Flaps Delete Removal Blanks Plugs For BMW M57 M57N M57TU

22 mm and 33 mm Swirl Flap Flaps Delete Removal Blanks Plugs For BMW M57 M57N M57TUThe material of the end caps is the same as of the intake manifold, additionally reinforced with gla fiberLaof differences in the thermal expansion between the manifold and the capsProfeional quality of manufacturingTo remove the swirl flaps you will need one piece per cylinder, so 6 per engine.There are two types of sizes:smaller swirl flaps (22 mm), designed for vehicles manufactured up to 2004;larger swirl flaps (33 mm), designed for vehicles manufactured since 2004;you need to measure the hole in the manifold for engines made in 2004. In 2004 were used two sizes of swirl flaps.