BDFHYK Oxygen Sensor Upstream Downstream O2, Compatible with Jaguar XJ12 XJS, Compatible with Toyota Highlander RAV4, 234-4048, 8946530430, Replacement 1PCS

This BDFHYK 234-4048 O2 sensor is an OE-style aftermarket replacement for listed Toyota Highlander, RAV4, Lexus GS300 and Jaguar XJ12, XJS applications. Cross-reference numbers include Toyota/Lexus 89465-series numbers and Jaguar LNA1682AC. The exact upstream or downstream location varies by application. Before ordering, verify year, engine, emissions configuration, original sensor number, connector, wiring, lead length and exhaust position. A stored diagnostic code alone does not prove sensor failure.

234-4048 O2 Sensor Fitment for Toyota, Lexus and Jaguar

• Toyota Highlander
• Toyota RAV4
• Lexus GS300
• Jaguar XJ12
• Jaguar XJS

Confirm the exact year and engine before ordering; model-family identification alone is not sufficient for final fitment.

234-4048 O2 Sensor Interchange References

Replacement references include 234-4048, 8946530430, 8946542090, 8946542100, 8946548060, 8946548070 and LNA1682AC.

234-4048 Upstream and Downstream Position Check

Position varies by application. Confirm the original sensor location with vehicle-specific service information and do not assign a universal Bank/Sensor number.

234-4048 O2 Sensor Diagnosis Before Replacement

Inspect the connector, wiring, heater circuit, related fuse, exhaust leaks, intake or fuel-control faults, misfires and catalyst operation before replacement. P0420 or P0430 does not automatically prove an oxygen sensor is defective.

234-4048 O2 Sensor Installation Notes

• Allow the exhaust system to cool before service.
• Use an O2 sensor socket or suitable wrench.
• Compare the connector, lead length and original number with the removed sensor.
• Inspect bung threads and start the sensor by hand.
• Use anti-seize only when permitted by the sensor instructions.
• Tighten to the applicable service specification and route the harness safely.

234-4048 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

Important: This is an OE-style aftermarket replacement, not a factory-branded part.