BMW M57 335D/X5D Swirl Flap Delete Kit DIM-12-12-12 Just like the cowl location

Just like the cowl location

Carbon build-up is no joke

They must be smooth and clean to prevent leaks

our off-road version eliminates the catalytic converter with a high-flow resonator to eliminate back pressure

UPGRADE YOUR 135i/335i FMIC

BMW M57 335D/X5D Swirl Flap Delete Kit DIM-12-12-12 Just like the cowl locationDESCRIPTION A QUALITY SWIRL FLAP DELETE KIT THAT DOESN'T LEAK With a multitude of options for swirl flap blanking kits on the market for the M57, many have found the hard way that the majority leak boost, are poor quality and or have an incorrectly designed o ring. ATM provides a quality solution with a 6061 aluminum body, large viton o ring, and our own design to our specs. Whether your objective is to eliminate the factory leaking swirl flaps or