If you're running an exhaust without O2 sensors or blocking off a secondary port, this Drag Specialties 18 mm O2 sensor plug keeps things clean and leak-free. Perfect for tuners, builders, and riders deleting factory sensors or sealing unused bungs. Simple, solid, and dependable — exactly what you want when you're buttoning up an exhaust on a Harley.
Features
Fits any standard 18 mm O2 sensor port
Ideal for blocking off unused or relocated O2 sensor bungs
Precision threading for a tight, leak-free seal
Perfect for custom exhausts, wideband tuning, and sensor delete setups
Made in the USA
Fitment
Universal — works with any exhaust using an 18 mm x 1.5 mm O2 sensor port.
Includes
One 18 mm x 1.5 mm O2 sensor plug
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