Vance & Hines, Game of plugs for 18 mm O2 sensor. Zinc. For Harley-Davidson

Zinc plated steel.
It adapts to 18 mm x 1.50 sensor plugs.
Required with H-D 86 models onwards equipped with sensor without O2 (oxygen) that have an exhaust system installed with original threaded sensor cap holes.
It can also be used in H-D models when O2 sensors are no longer needed.

Compatible with:> H-D 86-06 models (with an escape system equipped with O2 sensors)