BDFHYK Oxygen Sensor Upstream O2, Compatible with Honda Civic Civic Del Sol Cr-V Prelude, Compatible with Acura Integra Vigor, 234-4011, 36531P2T003, Replacement 1PCS

This BDFHYK 234-4011 upstream O2 sensor is an OE-style aftermarket replacement for listed Honda Civic, Civic del Sol, CR-V, Prelude and Acura Integra, Vigor applications. Multiple 36531-series interchange numbers are associated with this sensor family, so the exact original number and connector should be matched before ordering. Confirm year, engine, emissions configuration, upstream exhaust location, wiring and lead length for the vehicle. A Check Engine Light or stored code alone does not confirm oxygen sensor failure.

234-4011 Upstream O2 Sensor Fitment for Honda and Acura

• Honda Civic
• Honda Civic del Sol
• Honda CR-V
• Honda Prelude
• Acura Integra
• Acura Vigor

Year and engine mapping can vary within these model families. Confirm the original sensor and vehicle-specific application before installation.

234-4011 O2 Sensor Interchange References

Replacement references include 234-4011, 36531P2T003, 36531P3FA01, 36531P54003, 36531P72A01, 36531P72A02, 36531P73G01, 36531P75A01, 36531PK2J01, 36531PV1A01, 36531PZ1003 and 36531PZ3013.

234-4011 Upstream Sensor Position Check

This SKU is listed for upstream use. Do not assign a universal Bank 1 Sensor 1 or Bank 2 Sensor 1 label; confirm bank and sensor numbering from service information for the exact engine.

234-4011 O2 Sensor Diagnosis Before Replacement

Inspect the connector, wiring, heater circuit, related fuse, power and ground, exhaust leaks, intake or vacuum leaks, fuel pressure, injector operation, misfires and other engine-control inputs before replacement. Fuel-trim codes require diagnosis before parts are changed.

234-4011 O2 Sensor Installation Notes

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

234-4011 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

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