Catalytic Converter Sensor Automotive Accessories Catalytic Converter M18X1.5 Thread Adapter Stainless Steel Features: Material: SS304 and stainless steel Size: Hexagonal 23 mm, length 50 mm, thread M18*1.5 Package Contents: 4* O2 Sensor Adapter The program actually has a built-in micro catalytic converter, which will help to cause annoying engine inspection lights after modifying the exhaust system or removing the catalytic converter, sometimes even when installing a high catalytic converter. Don't take the risk of using extensions, as they usually don't work. This is a true built-in catalytic converter. This type of O2 cel will make your ECU think that the backup catalytic converter is still being installed. When you remove the catalytic converter, the rear oxygen sensor will see higher temperatures and more unburned fuel. Therefore, this will illuminate the check engine indicator light (Cel, DTC), with error codes typically P0420 (system efficiency below threshold group 1) and/or P0430 P0420- system efficiency below threshold group 2). Off road use Our 180 degree oxygen sensor plug catalytic converter is made of metal. The built-in M18X1.5 catalytic converter helps with annoying engine inspection lights Package Included: 4 X oxygen sensor. 🌀【Universal Oxygen Sensor Adapter】Most modern vehicles are equipped with M18x1.5 mm threaded oxygen sensors. You can can easily screw your oxygen sensor into the spacer and then the spacer into your exhaust. 🌀【Sturdy Iron】The O2 oxygen sensor spacer is made of high quality iron, designed for road and track construction, strong and durable, high strength and durability; Threads use of dedicated tool, perfect accuracy and repeatability. 🌀【Quick and Easy Installation】M18 * 1.5mm long motor light eliminator adapter, 50mm length. Easy straight bolt-on installation with NO modifications needed. 🌀【Main Function】O2 oxygen sensor spacer mainly increases the distance between the O2 sensor and the exhaust system. Eliminate that check engine light with this CEL Fix. 💌If You Have Any Questions about The Item, Plz Contact Me by Email and I Will Reply ASAP.Best Wishes💖