BDFHYK Oxygen Sensor Upstream O2, Compatible with Audi A4 A4 Quattro A8 Quattro, Compatible with Volkswagen Beetle Eurovan Golf Jetta, 17351, 021906262B Replacement 1PCS

17351 Upstream Oxygen Sensor for Audi A4 and Volkswagen Applications

This BDFHYK upstream oxygen sensor is an OE-style aftermarket replacement for selected Audi and Volkswagen applications that match 17351, 021906262B, or the listed interchange references. Verified fitment includes selected Audi A4/A4 Quattro/A8 Quattro and Volkswagen EuroVan, Golf, Jetta, and New Beetle configurations. Because engine code, model year, exhaust position, and lead configuration can change within the same model, compare the original sensor number before ordering.

17351 Audi and Volkswagen O2 Sensor Vehicle Fitment

The older product data also mentioned additional luxury applications. Those are not included in this verified table; use VIN-based parts information and the original sensor reference before applying this SKU outside the rows shown.

17351 Upstream Oxygen Sensor Interchange References

Key references include 17351, 021906262B, 06A906262BC, 07C906262R, 11787512984, 17014, 17085, 17090, 17109, 17116, 17183, 17191, 17193, 17227, 17229, 17237, 17244, 17246, and 1K0998262D. A cross-reference match should be confirmed with the vehicle, engine, connector, and upstream exhaust location.

Diagnosing the 17351 Audi/VW Upstream O2 Sensor

A stored fault code or Check Engine Light does not prove that the upstream oxygen sensor has failed. Inspect the connector, harness routing, heater power and ground where applicable, exhaust leaks, and related engine-running conditions before replacing parts. Confirm the sensor location from vehicle-specific service information because similar-looking sensors may be used in different positions.

A sensor-related code can be influenced by wiring damage, exhaust leaks, mixture faults, misfires, or other engine inputs. Confirm the affected sensor and circuit before replacement.

Installing the 17351 Audi and Volkswagen O2 Sensor

• Allow the exhaust system to cool completely before removal.
• Compare the old and replacement sensors before installation, including the OE reference, connector, lead routing, and physical configuration.
• Use an O2 sensor socket or suitable wrench; avoid impact tools on the sensor.
• Start the sensor by hand to reduce the risk of cross-threading the exhaust bung.
• Use anti-seize only when permitted by the sensor instructions, and keep compounds away from the sensing element.
• Route the harness away from hot exhaust surfaces, sharp edges, and moving parts, then tighten to the vehicle-specific specification.