NAMZ O2 Sensor Harness Extension — adapts 18 mm to 12 mm – 12-16 Dyna, 09-16 Touring, 09-16 CVO, 10-16 Trike, 12-16 Softail
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Adapts 18 mm O2 sensor bungs to 12 mm; pre-assembled wiring harness with connector pins; plug-and-play installation; made in the United States.