Wide diffuser for BMW E46 Rear M Sport Bumper addon with ribs / fins | eBay
Carbon Composites & Aero Creations
Amazon.com: MCARCAR KIT Rear Diffuser fits for BMW 3 Series E46 M Sport 1999-2006 Factory Outlet 316i 318i 320i 325i 328i 330i M-Tech Auto Carbon Fiber CF Lower Bumper Lip Spoiler Body