4Pcs O2 Oxygen Sensor Upstream & Downstream For Audi A4 A6 A4 A6 Quattro 3.0L

Manufacturer Part Number: B2OS566 Interchange Part Number 75-9128 Position 1 Upstream & 1 Downstream Wire Quantity 4 & 4 Wire Harness Length 16.34 & 12.8 Please check the plug & fitment notes & filter system & description for accurate information.Manufactured to the highest standards Our oxygen sensors are durable, ensuring long-term stable performance