NGK BMW 1 Series M 2011 Direct Fit 5-Wire Wideband A/F Sensor car enthusiast apparel the Track Edition finishes off

the Track Edition finishes off with 102mm slash-cut tips

and a valved SwitchPath™ muffler tuned for the S58

with 2 o-rings and instructions

Throw this altogether and the small change in additional caster improves the front-end grip and handling considerably

NGK BMW 1 Series M 2011 Direct Fit 5-Wire Wideband A/F Sensor car enthusiast apparel the Track Edition finishes offNTK is the world's largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle's on board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how