Prosport Replacement Bosch Wideband LSU 4.9 5 Wire O2 Sensor YMM_2005_STI throaty intake growl under load

throaty intake growl under load without excessive noise during normal driving

Perfect for enthusiasts who want an exact fit and authentic quality

Gold anodizing signifies FA/FB engine series tool

As a platform-specific accessory

and 2008–10 models will need a fog light delete

Prosport Replacement Bosch Wideband LSU 4.9 5 Wire O2 Sensor YMM_2005_STI throaty intake growl under loadThis is the latest Bosch o sensor that we use exclusively with our Wideband AFR kit. The newest generation of oxygen sensors are being called "wideband" lambda sensors or "air fuel ratio sensors" because that's exactly what they do. They provide a precise indication of the exact air fuel ratio, and over the broadest range of mixtures all the way from 10: 1 to 20: 1 air fuel ratio. The Bosch LSU 4 wideband oxygen sensor is a 5 wire sensor that reads