Active Autowerke Chassis Reinforcement Kit for E46 REAR 323 325 328 330 M3 (13-005) 1806 Mass air flow sensor adapter

Mass air flow sensor adapter is included to bolt-on to the stock mass air flow sensor

ground output for optional LED warning light

Forged assembly is far stiffer than stamped-type

5L STi Return-Style System

Base Outside Diameter: 6

Active Autowerke Chassis Reinforcement Kit for E46 REAR 323 325 328 330 M3 (13-005) 1806 Mass air flow sensor adapterThe Active Autowerke Chassis Reinforcement Kit is designed to address rear subframe sheet metal damage on E46 models including 323, 325, 328, 330, and M3. Rear subframe, differential, and suspension bolts thread into the sheet metal, which can crack or tear over time, causing unusual sounds and compromised structural integrity. This kit provides all the necessary reinforced steel plates to restore and secure your BMW's rear subframe to its intended