Sensors - Oxygen Sensor <==> O2 or Lambda Sensor):All parts for 2001 AUDIA4 QUATTRO
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| Part # | Engine / Misc Description | Part Description | Click to Check Price |
| SG256 | L4 1.8 C AWM | Downstream Sensor Downstream Sensor  | |
| SG1209 | L4 1.8 C AWM | Upstream Sensor 058 906 265B, Upstream Sensor  | |
| SG1173 | V6 2.8 H ATQ | Downstream Sensor 078 906 265N, Downstream Sensor, Right Side, Left Side  | |
| SG886 | V6 2.8 H ATQ | Downstream Sensor 078 906 265P, Downstream Sensor, Right Side, Left Side  | |
| SG1210 | V6 2.8 H ATQ | Upstream Sensor 078 906 265M, Upstream Sensor, Two required  | |
| SG256 | AVANT L4 1.8 | Downstream Sensor Downstream Sensor | |
| SG1209 | AVANT L4 1.8 | Upstream Sensor 058 906 265B, Upstream Sensor | |
| SG1173 | AVANT V6 2.8 H ATQ | Downstream Sensor 078 906 265N, Downstream Sensor, Right Side, Left Side | |
| SG886 | AVANT V6 2.8 H ATQ | Downstream Sensor 078 906 265P, Downstream Sensor, Right Side, Left Side | |
| SG1210 | AVANT V6 2.8 H ATQ | Upstream Sensor 078 906 265M, Upstream Sensor, Two required | |
