1. Product Introduction 1. The oxygen sensor gasket has a relatively simple structural design and can be installed relatively easily using direct - insert bolts without significant modification. 2. This product features a thread design of M18x1.5mm. One can first screw the oxygen sensor into the gasket and then screw the gasket into the exhaust device. 3. It is made of polished metal, which is corrosion - resistant and durable. 4. The product has a length of about 3.2 cm. 5. It is suitable for many standard oxygen sensors (many modern vehicles are equipped with oxygen sensors with M18x1.5mm threads). It is a useful item for off - road vehicles using high - flow catalytic converters, sports exhaust systems, exhaust pipes, or straight pipes. 2. Product Information 1. Product Name: Oxygen Sensor Gasket 2. Material: Metal 3. Thread Specification: M18 X 1.5 4. Features: Universal, threaded, relatively easy to install 5. Size Details: Approximately 3.2 cm/1.26 inches in length 3. Precautions 1. Due to differences in lighting and screen settings, the color of the product may vary somewhat from the picture. 2. Due to manual measurement differences, slight size errors may occur. 4. Package Contents 1. 2 oxygen sensor gaskets