2004-08 Acura TSX O2 Oxygen Sensor Walker Products 250-54022 - WKEOS00141

Walker Products Oxygen Sensor: 250-54022

Walker Products, an ISO 9001-2008 / TS16949 certified company, specializes in the manufacturing and distribution of Fuel System Components and Automotive Engine Management products. Walker is committed to meeting or exceeding OEM or equivalent standards and specifications. This effort is backed by Walker's own manufacturing, product management and engineering expertise.


  • Brand New Walker Oxygen Sensor
  • Direct Fit
    • Correct Connector No cutting or splicing
    • Correct wire length (24.0 Inches)
  • Upstream Sensor
    • Air Fuel Ratio
  • 4 wire configuration
  • Replaces dealer part numbers: 36531RAAA01, 36531 RAA A01, 36531RAAA02, 36531 RAA A02, 36531RBB003, 36531 RBB 003
  • Built and tested to strict quality control standards

Note: For clarification purposes:

  • Upstream location is between the catalytic converter and the engine
  • Downstream location is between the catalytic converter and the tailpipe

Install note:

You may be required to reset the vehicle computer after installation of this part.

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.

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

5.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Perfect fit and fast shipping.
This device shipped REALLY FAST, like two days, and allowed me to finish my install and use my car for a trip when I thought I would need to use an alternate. Another part I bought from 1A Auto also shipped REALLY FAST! Because of this, 1A has become the first place I look for replacement parts. Their prices were the best, too!
August 1, 2017
1 year ago
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Vehicle Fit

Year Make Model Description
2004-2008Acura TSX Acura TSX L4 2.4L Upstream (Air / Fuel Ratio) O2 Oxygen Sensor Walker Products 250-54022

This part replaces:

  • Walker Products 250-54022
Only 1 left in stock
Part #: WKEOS00141

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

Walker Products
Brand #: 250-54022

How-to Video:

(03:08 min)