Features: *Built-in M18X1.5 catalytic converter, helps to get rid of checking engine lights *General model issuitable for most automobiles *Built in micro catalytic converter, avoid checkingengine lights after modifing exhaust or or removing catalytic converter *Don t risk using extensions because they usually don t work. This is a real mini catalytic converter *Make ECU think an inventory catalytic converter is still installed , after removing the catalytic converter , it will see higher temperatures and greater unburned fuel flow Specifications: *Material: 304 Stainless Steel *Size: 6*2.5*2.5cm(Approx) Package Contents: 1*O2 Sensor Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.