BDFHYK Oxygen Sensor Downstream O2, Compatible with Honda Civic CR-V, Compatible with Acura EL l4 1.6L 2.0L, 234-4092, 36531P5M004, Replacement 1PCS

This BDFHYK 234-4098 downstream O2 sensor is an OE-style aftermarket replacement for listed Honda Civic, Honda CR-V and Acura EL applications. The current application family includes 1.6L and 2.0L configurations, but the exact engine mapping must be confirmed for the vehicle. Before ordering, compare the original sensor number and verify year, engine, emissions configuration, downstream exhaust location, connector, wiring and lead length. A stored diagnostic code alone does not prove oxygen sensor failure.

234-4098 Downstream O2 Sensor Fitment for Honda and Acura

• Honda Civic — listed application family
• Honda CR-V — listed application family
• Acura EL — listed application family

The current product information does not provide a complete year-and-engine map for this SKU. Confirm the exact vehicle and engine before ordering.

234-4098 O2 Sensor Interchange References

Replacement references include 234-4098, 36532P2PA01, 36532P3FA01 and 36532P3FA11. Match the reference together with the connector, harness and downstream location.

234-4098 Downstream Sensor Position Check

This SKU is listed for downstream use. Do not convert “downstream” into one universal Bank/Sensor label; bank and sensor numbering depends on the engine and exhaust layout.

234-4098 O2 Sensor Diagnosis Before Replacement

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

234-4098 O2 Sensor Installation Notes

• Allow the exhaust system to cool before service.
• Use an O2 sensor socket or suitable wrench.
• Compare the connector and lead length 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.

234-4098 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

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