Features: Easy Operation: Direct replacement durable and have high strength to use. Prevent certain oil and excess fuel from entering the pipe. Eliminate to checking engine light after modifing exhaustor or removing catalytic converter. Solve the problem of P0420/P0042 codes faulty. Easy to Install: Easy installation direct bolt-on no modification needed. You will have no worries about the difficult installation. For M18x 1.5 Threads: It is suitable for the installation position with narrow space. Easy installation direct bolt-on no modification needed. After-sale Service: If you have any questions please feel free to contact us and we will give you a satisfactory reply. Specification: Material: Metal Color: Silver Package Weight: About 101g Product Lenght: 45mm Top Outer Diameter: 18mm Bottom Inner Diameter: 17mm Bottom Outer Diameter: 22mm Notes: 1.Due to the lighting effects and shooting angles there is a color difference in the product please understand. 2.Due to manual measurement there is a tolerance in the product size. includes: 1 Pair *Car Oxygen O2 Sensor