Mcs, 12mm O2 Sensor Cap Set for Harley-Davidson

Sensor connector set, made of galvanized steel.
Fits 12mm x 1.25 sensor plugs.
Required with non-O2 (oxygen) sensor equipped models that have an exhaust system installed with original threaded sensor bung holes.
Can also be used on HD models when O2 sensors are no longer needed.

Compatible with: > 09-20 HD with original 12mm sensor ports