Mazdaspeed 3/6 Downstream O2 Sensor Extension Harness

The MazdaSpeed 3/6 Downstream O2 Sensor extension is a 12, 18, or 24 inch extension harness available for those with aftermarket downpipes/ exhaust systems that allow you to retain downstream O2 sensor functionality. 

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

12 Inch extension for Main engine harness that is no longer routed in original location and places harness closer to Downstream O2 Sensor.

18 Inch extension for those with OEM routing and location on main harness.

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