Description B6 S4 MAF Housing This is the 82mm housing used on the 4.2L B6 S4 Tuning is required for proper operation on 1.8T models and early Bosch equipped 2.7Ts This housing may be used with the stock 1.8T sensor, or the 4.2L V8 sensor Ideal for 1.8T big turbo projects. This is the housing only, the sensor is not included; this fits a Bosch sensor and will not fit a Hitachi Sensor.
