BDFHYK Oxygen Sensor Downstream O2, Compatible with Lexus ES300 ES330 ES350 GX460, Compatible with Toyota Avalon Camry Solara, 234-4064, 8946506070, Replacement 1PCS

This BDFHYK 234-4064 downstream O2 sensor is an OE-style aftermarket replacement for listed Lexus ES300, ES330, ES350, GX460 and Toyota Avalon, Camry, Solara applications. Multiple 89465-series interchange numbers are associated with this sensor family, and exact year, engine and exhaust location can differ within the same model. Before ordering, match the original sensor number and confirm downstream position, connector, wiring, lead length and emissions configuration. A stored code alone does not prove sensor failure.

234-4064 Downstream O2 Sensor Fitment for Lexus and Toyota

• Lexus ES300, ES330, ES350 and GX460
• Toyota Avalon, Camry and Solara

Confirm exact year, engine and original sensor before ordering.

234-4064 O2 Sensor Interchange References

Replacement references include 234-4064, 8946506070, 8946506130, 8946507060, 8946507080, 8946533260, 8946533370, 8946533420, 8946535720 and 8946560440.

234-4064 Downstream Sensor Position Check

This SKU is listed for downstream use. Do not assign a universal Bank 1 Sensor 2 or Bank 2 Sensor 2 label without service information for the exact vehicle and engine.

234-4064 O2 Sensor Diagnosis Before Replacement

Inspect wiring, connector condition, heater circuit, related fuse, exhaust leaks, fuel-control faults, misfires and catalyst operation before replacement. Catalyst-efficiency codes require system diagnosis and do not automatically prove the sensor is defective.

234-4064 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 reference before installation.
• 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.

234-4064 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

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