Features： 1、Iron Material: O2 sensor spacer adopts iron material, which has high strength, durability, never rust or corrosion, and can be used for a long time. 2、Universal Accessories: Universal 18mm threaded socket accessories, suitable for most vehicles with M18 x 1.5 O2 sensor holes. 3、Easy to Install: You can easily screw the oxygen sensor into the gasket, and then screw the gasket into the exhaust port, and dag it directly without modification. 4、Quality Control: Oxygen sensor adapter uses high‑performance adapter accessories, all components are tested and quality controlled before shipment. 5、Superb Craftsmanship: O2 sensor spacer adapter through superb craftsmanship and professional processing, this extended gasket provides you with good performance. Specification： Item Type: Oxygen Sensor Adapter Material: Metal Thread Specification: M18 x 1.5 Product Length: Approx.43mm / 1.7in Package List： 2 x Oxygen Sensor Adapter