Mazdaspeed 3/6 Upstream O2 Sensor Extension Harness

The MazdaSpeed 3/6 Upstream O2 Sensor extension is a 6, 12, or 18 inch extension harness available for those with aftermarket top-mount exhaust manifolds or those looking to tuck wires that allow you to retain upstream O2 sensor functionality without straining the OEM engine harness to reach new sensor location. 

This product features a dual layer protection, with abrasion resistance Tesa Tape underneath, and Fire Resistance Techflex Braided Looming overtop.

6 Inch extension (pictured) for minimum needed extension for top mount manifolds. 

12 Inch extension for those looking for greater flexibility and routing.

18 Inch and longer (upon request) if main engine harness is heavily modified out of original location.