Main Function: The o2 sensor spacer mainly increases the distance between the oxygen sensor and the exhaust system. Use this CEL repair program to eliminate the check engine indicator light Special Tools: Threads made with dedicated tool with perfect accuracy and repeatability, designed specifically for streets and tracks to ensure maximum strength and durability, and can be used for a long time Universal: M18x1.5mm oxygen sensor spacer, suitable for most modern vehicles, simple direct installation without modification, you can easily screw the oxygen sensor into the gasket and then screw the gasket into the exhaust gas Specification: Material: Iron, Color: Silver, Thread Size: M18 * 1.5, Length: 45mm/1.8in, Horn: 22mm/0.9in, Project Quantity: 2 pieces, Packaging Weight: About 100g/3.5oz, Accessories: Universal, Application: For oxygen sensor expansion Customer Satisfaction: If the packaging of the o2 sensor spacer you receive is damaged, please contact us and we are always available to assist you