Michigan Motorsports 24in Oxygen Sensor Extension Harness — GM Gen V downstream O2, OEM-style plug-and-play

The Michigan Motorsports 24" Oxygen Sensor Extension Harness adds 24 inches of OEM-style, plug-and-play wiring to relocate downstream O2 sensors on GM Gen V LT1/LT4/LT5 engines without cutting or splicing.

When modifying exhaust routing, installing aftermarket headers, or repositioning downstream oxygen sensors on GM Gen V platforms, factory wiring length can be a limiting factor. This 24-inch extension harness from Michigan Motorsports provides a direct, durable solution for Camaro, Corvette, Silverado, Sierra and other compatible models — preserving factory connectors and sensor accuracy while giving you the extra reach you need.

How does this harness make downstream O2 sensor relocation easier?

The harness uses pre-terminated, OEM-style connectors that plug directly into the vehicle and the sensor, eliminating wire cutting, soldering, or complex rewiring. That keeps the factory wiring intact and reduces installation time and error risk.

• 24-inch cable length for added reach
• Direct-fit connectors match factory pinouts
• No splicing preserves factory electrical integrity

Will this extension withstand engine bay conditions?

Materials and construction are chosen to tolerate heat, vibration, and the harsh environment around the exhaust and undercarriage. The harness is insulated and routed to resist chafing and temperature exposure typical of Gen V engine compartments.

• High-temperature rated insulation resists heat near exhaust
• Vibration-resistant build maintains long-term electrical contact
• Protective sheathing reduces abrasion risk

Which vehicles and sensors are compatible with this extension?

This extension is designed for downstream (post-catalytic) oxygen sensors on GM Gen V engines — specifically LT1, LT4, and LT5 configurations. It fits many Chevrolet Camaro and Corvette models and full-size trucks such as Silverado and Sierra where the downstream sensor plug matches factory style.

• GM Gen V LT1, LT4, LT5 downstream O2 sensors
• Common fitment: Camaro, Corvette, Silverado, Sierra
• OEM connector shape and pin orientation for proper mating

How simple is the installation for DIY or shop mechanics?

Installation is straightforward thanks to the plug-and-play approach: unplug the factory harness, connect the extension, then plug the sensor into the extension. No special tools or electrical skills are required beyond standard vehicle service precautions.

• Disconnect factory sensor harness and plug extension inline
• Secure cable routing away from heat and moving parts
• Re-check connections and sensor operation after installation

Who is this for: This harness is intended for enthusiasts, performance shops, and technicians working on GM Gen V vehicles who need to move downstream oxygen sensors during exhaust upgrades, header installation, or custom routing. It’s also useful for anyone seeking a clean, factory-style extension to avoid splicing while maintaining reliable sensor communication and vehicle diagnostics.