Car CEL Fix Check Engine Eliminator Adapter Oxygen O2 Sensor M18X1.5 for Road Catalyst and CSV Auto Parts Key checks and maintenance Check whether the vent hole on the sensor housing is blocked and inspect the ceramic core for damage If the ceramic core is damaged, the oxygen sensor Benefits and purpose Helps achieve smoother exhaust flow and improved engine performance Designed to assist with Check Engine Light (CEL) issues in systems that use an O2 sensor with M18X1.5 threads Supports compatibility with road catalyst setups and CSV Auto Parts components Materials and durability Built from metal plus ABS material for durability and long service life Specifications and compatibility Thread size: M18X1.5 Compatible with road catalyst systems and CSV Auto Parts assemblies that use O2 sensors with this thread Use scenarios Scenario 1: During CEL diagnosis, inspect the sensor vent hole and ceramic core; if damaged, install a replacement oxygen sensor to restore proper function Scenario 2: Routine maintenance on vehicles equipped with road catalyst systems that use M18X1.5 O2 sensors Scenario 3: Upgrading or replacing an aging sensor in CSV Auto Parts compatible cars, trucks, or SUVs that require the M18X1.5 O2 sensor specification