In vehicles with EURO 3 and higher emissions standards, the second lambda oxygen sensor is located after the catalytic converter and serves a diagnostic function. If irregularities are detected based on data from the engine control unit, an error may be displayed on the dashboard, and the engine may enter emergency mode, depending on the vehicle make. This can manifest as a significant drop in performance. Such issues commonly occur when the catalytic converter is removed, has reduced efficiency, or is replaced with a jet pipe. In these cases, installing a second oxygen sensor extender may be necessary. The catalytic converter can reduce engine output by 2 to 3% and limit maximum speed by up to 5%. Removing the catalyst and using an emulator can be a cost-effective way to restore performance. The emulator may also assist in cases of LPG system issues, where improper mixture detection causes the CHECK ENGINE light to appear. The extender features polished front surfaces for secure tightening. Includes a washer and allows for adjustable installation angle. Threads are precision-machined for high accuracy and consistent fit. Exhaust gas inlet hole is 2 mm; in extreme cases, narrowing this hole can help prevent engine faults during high-speed operation. Ideal for tight or confined spaces where straight extenders cannot be used. Installation: - Remove the existing lambda oxygen sensor - Screw the extender into the exhaust port - Reinstall the oxygen sensor into the extender Specifications: - Internal and external thread: M18x1.5 - Height: 40mm - Weight: 130g - Color: Brass - Material: Metal Package Includes: - 1 x Oxygen Sensor Extender - 1 x Washer Note: Light and screen differences may cause slight variations in color between the image and the actual item. Measurement tolerance is +/- 1-3 cm.