Fitments
12-17 Softail, Dyna (with pre-2012 exhaust) (NU); Other applications were 12mm sensors are used for 18mm holes
Part Description
Namz, 18mm to 12mm exh. sensor bung reducer set
Used in custom applications to reduce exhaust sensor thread from 18mm to 12mm so late H-D models, equipped with 12mm O2 sensors, can be used with earlier 18mm sensor style exhausts. Note: For Touring models an extra extension cable is required, which is available as 578303 bung set & cable extension kit.
