NAMZ O2 Sensor Harness Extension and Bung Adapter — 18 mm to 12 mm – 12-16 Dyna, 09-16 Touring, 09-16 CVO, 09-16 Trike, 12-16 Softail
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Allows use of '09 Dresser exhaust pipes on '10–'16 Dresser models; reduces 18 mm O2 bungs to 12 mm; plug‑n‑play harness, no cutting or splicing; made in the United States.