BDFHYK Oxygen Sensor Upstream Downstream O2, Compatible with Toyota 4Runner Pickup 1992-1995 l4 V6 2.4L 3.0L, 234-4052, 8946539465, Replacement 1PCS

This BDFHYK 234-4052 O2 sensor is an OE-style aftermarket replacement for listed 1992-1995 Toyota 4Runner and Pickup applications. The listing covers 2.4L L4 and 3.0L V6 configurations, but the exact engine-to-sensor position must be confirmed for the vehicle. Before ordering, match the original 89465-series sensor number and verify engine, emissions configuration, connector, wiring, lead length and exhaust location. A Check Engine Light or stored code alone does not confirm sensor failure.

234-4052 O2 Sensor Fitment for 1992-1995 Toyota 4Runner and Pickup

Confirm the exact engine and original sensor before ordering rather than cross-applying both engine sizes to every configuration.

234-4052 O2 Sensor Interchange References

Replacement references include 234-4052, 8946539465, 8946539485, 8946539495, 8946539505, 8946539525, 8946539535, 8946539595, 8946539645 and 8946539745.

234-4052 Upstream and Downstream Position Check

The required sensor location is application-dependent. Confirm the original exhaust location and do not assign a universal Bank/Sensor number from the product name alone.

234-4052 O2 Sensor Diagnosis Before Replacement

Inspect wiring, connector condition, heater power and ground where applicable, exhaust leaks, intake or vacuum leaks, fuel pressure, injector operation and engine-running faults before replacement. A diagnostic code should be treated as a starting point for testing.

234-4052 O2 Sensor Installation Notes

• Allow the exhaust 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.

234-4052 O2 Sensor Package Contents

• 1 × BDFHYK oxygen sensor

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