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Replace or protect your oxygen sensor quickly — the KOSO Oxygen Sensor Plug is a precision-fit solution designed for motorcycles, scooters, and small engines. Built to OEM dimensions, this plug seals the oxygen sensor port when the sensor is removed or bypassed, preventing exhaust leaks and preserving engine performance.
Ideal for tuning, diagnostics, or replacing a faulty sensor, the KOSO plug maintains exhaust integrity and helps avoid check-engine lights caused by open sensor ports. Easy to install with basic tools, it provides a reliable, cost-effective fix.
Why choose KOSO Oxygen Sensor Plug? Quality construction, exact fit, and dependable sealing ensure consistent engine operation and reduce exhaust leaks. Keep your ride running smoothly while you repair or upgrade the oxygen sensor system.

