O2 Sensor Plug – 18 mm x 1.5 mm

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