Pipe Oxygen Sensor
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Walker Pipe Oxygen Sensor

Part No. 41821 Warranty Details  
Quantity  Add to Cart

Fit of this part varies by vehicle & equipment specs Type of Fit

Walker®, with our worldwide OE partnerships and manufacturing facilities, possesses the technical excellence needed to meet today's emissions control needs, while developing solutions for tomorrow's challenges. Walker® is a 'one-stop' convenience, offering complete engine-to-tailpipe coverage of replacement emissions control systems and components for popular domestic and import vehicles in broadmarket, performance, and commercial vehicle applications. Walker delivers optimal OE-style fit, appearance, and dependability in aftermarket emissions control parts.

Product Features:
  • Offered in a variety of sizes for your installation needs
  • Constructed from durable and robust material for long life
  • 6" overall length
  • New Walker accessories help to ensure effective exhaust repairs
  • Walker supplies all of the accessories you need to do the complete exhaust job
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Do you have questions about this product?


Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    Do you have this in 3in.o/d ?
    Asked on 8/5/2013 by Graywolf from Wadsworth, Oh.

    1 answer



      Unfortunately, the pipe-oxygen sensor in 3 inches outlet diameter is currently unavailable online. For any further assistance, please feel free to call us at: 1-877-238-2623 or visit the nearest Advance Auto Parts store and one of our Parts Pros will gladly assist you with any questions or concerns you may have.

      Answered on 8/5/2013 by Steve from AAP
  • Q:

    What is the diameter of this ?
    Asked on 7/16/2013 by HkuspChris from St Petersburg FL

    1 answer



      This Walker Pipe-Oxygen Sensor - Part No. 41821 has exhaust pipe connector inside diameter : 2.500 inches and exhaust pipe connector length : 6.000 inches. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

      Answered on 7/16/2013 by Morgan from AAP
Displaying questions 1-2

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