Description
For Use with Full-Length Headers. When installing full-length long tube headers on your Sierra 3500, the O2 sensors are moved to a location that the stock connectors won’t be able to reach. Address this problem easily with this 36-Inch BBK O2 Sensor Wire Harness Extension Kit.
High-Quality Construction. The pair of harnesses included in this kit come in 36-inch lengths, enough to handle your full-length headers’ needs. This kit uses high-quality wires for uninterrupted transmission of current, ensuring no loss of O2 data. OEM-style connectors are used to form a positive connection to the sensors. Furthermore, heat protective sleeves enhance longevity and prevent damage from engine heat.
Quick and Easy Installation. Installation is a breeze since these harnesses are plug-and-play using factory-style connectors. There’s no need for splicing or modifications on the existing wiring, so you save a lot of time and effort during the installation process. Directional tabs on the connectors may have to be removed in some applications.
Application. This 36-Inch BBK O2 Sensor Wire Harness Extension Kit is designed to work with all models of the 2008-2013 GMC Sierra 3500 HD.
BBK 1116
CA Residents: WARNING: Cancer and Reproductive Harm
- O2 Sensor Wire Extension Harness
- Allows Use of Full-Length Headers
- Factory Style Connectors
- With Heat Protective Sleeves
- Measures 36 Inches Long
- Direct-Fit Installation
- Sold as a Pair
- Made in the USA
- Fits All Models of the 2008-2013 GMC Sierra 3500 HD



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