18mm o2 sensor plug set zinc Thread size:18mm x 1.50 with a little higher windscreen

with a little higher windscreen than the 578693 and 578694 racing screens

Mounting hole spacing (CC): 15 mm

a solid choice for any chopper or bobber

12V DC Compatibility: Designed for 12-volt DC applications

Overall height: 13

18mm o2 sensor plug set zinc Thread size:18mm x 1.50 with a little higher windscreenVance & Hines O2 Sensor Plug Set Motorcycle Exhaust Sensor plug set is for plugging unused sensor plug holes in your exhaust system. Made from zinc plated steel, perfect for non O2 sensor equipped models with sensor equipped exhaust systems or when O2 sensors are no longer needed. Features: Constructed from high quality zinc plated steel Sold in pairs 18mm is generally used on Harley models 2006 and earlier 12mm is generally used on Harley models 2007