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O2 Oxygen Sensor Extension Wire Harness; Downstream

(14-18 Sierra 1500

Find parts that fit my vehicle Item S576702
5 Reviews
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation

    Features

    • 15" Rear Oxygen Sensor O2 Harness Compatible With C7 Z06 Corvette, Camaro LT1, LT4, LT5 Gen V Silverado
    • Replaces OEM Part 12655678
    • Pair of New Oxygen Sensor Extensions for Rear O2
    • Harnesses Are 15" Long
    • Fits Other Gen 5 GM Applications Such As 2014+ Camaro, Silverado, Suburban, and Other Trucks
    • Designed for Downstream Sensor
    • Fits 14-18 Sierra 1500

    Description

    Oxygen Sensor Extension. The O2 Oxygen Sensor Extension Wire Harness for the downstream sensor is designed to extend the factory rear oxygen sensor wiring, allowing for seamless installation when aftermarket headers reposition the oxygen sensor bung farther from the original harness. It ensures accurate sensor readings and maintains emission control system functionality. This product eliminates the need for wire cutting and splicing during modifications.

    Construction and Appearance. Constructed with durable, heat-resistant materials, the harness features professional-grade wiring and connectors to ensure long-lasting performance and reliable electrical connections. The finish is designed to withstand harsh automotive environments while maintaining flexibility and durability, typically with black insulation for a clean appearance.

    Installation. Installation is straightforward with no drilling required. The harness connects directly to existing sensor plugs, providing a hassle-free upgrade for both professional and enthusiast mechanics.

    Application. Fits 14-18 Sierra 1500 with no exclusions or special notes for this model and year range.

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Install Details & What's in the Box

    Installation Info

    Installation Time

    (approx) 15 Minutes

    Difficulty Level:

    Simple installation for anyone.

    Installation Guides

      No guide available for this part yet.

    What's in the Box

    • (1) O2 Oxygen Sensor Extension Wire Harness
    4.0

    Customer Reviews (5)

    Questions & Answers

    No questions about this product yet. Ask the First Question

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