BDFHYK Oxygen Sensor Downstream O2, Compatible with Acura 2001-2003 CL, EL, NSX, TL, Compatible with Honda Accord, Civic, Prelude 1990-1993 234-4621 Replacement 1PCS

$18.99
Product Detail
  • Type Oxygen Sensors
  • SKU BDDLZ-ES06919-1
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Description Specifications FAQs Return & Support

This BDFHYK downstream O2 sensor is an OE-style aftermarket replacement for listed Acura, Honda applications matching 234-4621 and the listed cross-reference numbers. It is intended for the listed downstream position. Before ordering, verify the year when listed, make, model, engine when listed, exact sensor position, original part number, connector, wiring layout, lead length, and emissions configuration. A Check Engine Light or stored OBD-II code does not by itself confirm that the oxygen sensor has failed.

Quick Fitment Summary

Make Model Years Engine
Acura CL 2001-2003 3.2L
Acura EL 2001-2003 1.7L
Acura NSX 2000-2005 3.0L / 3.2L
Acura TL 1999-2003 3.2L
Honda Accord 1990-1993 2.2L
Honda Accord 1998-2002 2.3L / 3.0L
Honda Civic 2001-2003 1.7L
Honda Prelude 1997-2001 2.2L

Fitment Checks Before Ordering

  • Match the listed vehicle application and engine where an engine is provided.
  • Compare the original sensor reference with 234-4621 and the listed cross-reference numbers.
  • Confirm the exact exhaust position, connector, terminal layout, wire arrangement, lead length, and emissions configuration before ordering.
  • Do not assign a Bank/Sensor label unless vehicle-specific service information confirms it.

Product Specifications

Brand BDFHYK
Product Type Oxygen Sensor / O2 Sensor
Sensor Position Downstream
Replacement References 234-4621; 36531P5P004; 36531P5P014; 36531PT3A05; 36531PT3A12; 36532P8CL02; 36532P8CL21; 36532P8DJ01; 36532PAAA01; 36532PAAA02; 36532PAAL01; 36532PAAL02; 36532PLRA01; 36542PR7A51
Package Quantity 1 sensor
Replacement Type OE-style aftermarket replacement

Confirm the Correct O2 Sensor Position

This SKU is listed for the downstream O2 sensor position. Do not convert that description into a universal Bank 1 Sensor 2 or Bank 2 Sensor 2 label. Bank and sensor numbering must be confirmed with vehicle-specific service information and the original sensor location.

Diagnosis Before Replacement

A stored OBD-II code or Check Engine Light does not prove the sensor itself has failed. Inspect the connector, wiring, heater circuit, related fuse, power and ground, exhaust leaks, intake or vacuum leaks, fuel-pressure or injector faults, misfires, and catalyst operation as applicable. P0171, P0174, P0420, or P0430 should be diagnosed before parts are replaced.

Installation Notes

  • Allow the exhaust to cool completely before removal.
  • Use an O2 sensor socket or suitable wrench and disconnect the connector without pulling on the wires.
  • Compare the replacement with the removed sensor, inspect the bung threads, and start the sensor by hand.
  • Use anti-seize only when permitted by the sensor instructions and keep compounds away from the sensing element.
  • Tighten to the applicable vehicle service specification and route the lead away from heat, sharp edges, and moving parts.
  • After repair, clear codes as appropriate and complete the applicable readiness drive cycle before an emissions inspection.

Package Contents

  • 1 × O2 sensor

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