This rear or downstream Oxygen O2 Sensor is a new, aftermarket replacement part that has the following specifications:

  • Is the rear or downstream O2 sensor
  • Correct wire length (22 Inches)
  • Direct Fit
  • Correct Connector No cutting or splicing
  • Replaces OE part numbers: 36531-PLR-A01, 36532-PRB-A01, 36531PLRA01, 36532PRBA01
  • Built and tested to strict quality control standards


A direct replacement. If you have a bad O2 sensor causing your Acura RSX or Honda Civic to idle poorly or fail an emission test then this is the part for you.

Returns Note:

Our electrical and electronic parts are subject to strict quality control testing.  Once the item has been installed or plugged in, it is no longer eligible for a refund.  The item may be eligible for replacement, only if it is found to have a manufacturing defect. Before purchasing, please ensure proper diagnosis of the failed original part is performed.

Note:  You may be required to reset the vehicle’s computer after installation of this part.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Identifying your Oxygen Sensors (0:57)
    • Upstream oxygen sensors are located in between the engine and the catalytic converter
    • Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
    • Locate your vehicle's firing order diagram
    • The bank that contains cylinder one is bank one
    • The bank that does not contain cylinder one is bank two, even if it does not contain cylinder two

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

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Vehicle Fit

Year Make Model Description
2002-2004Acura RSX Acura RSX Downstream O2 Oxygen Sensor
2002-2004Acura RSX Acura RSX Type S Downstream O2 Oxygen Sensor
2001-2002Honda Accord Honda Accord L4 2.3L Ultra Low Emissions Vehicle (ULEV) Downstream O2 Oxygen Sensor
2002-2005Honda Civic Honda Civic SI L4 2.0L Downstream O2 Oxygen Sensor

This part replaces:

  • OE # 36532PRBA01
  • OE # 36531PLRA01
  • Standard Motor Products SG579
Part #: 1AEOS01505


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(03:08 min)