47445 Top Selling 90O2 Oxygen Sensor CEL EliminatorAngled Extender Spacer Catalytic ConverterUniversalM18X1.5 Threads Application: For Most Vehicle With M18X1.5 Threads. Specification: 100% quality aurance tested, more responsive, le expensive, easier to install. Direct replacement, durable and have high strength to use. 90 design more room inside makes better reading of O2, greater degreasing of air. Not allow the oil and exce fuel to dump straight to the pipe. Built in micro catalytic converter, eliminate to checking engine light(CEL) after modifing exhaustor or removing catalytic converter. Solve the problem of P0420/P0042 codes faulty. It is suitable for the installation position with narrow space. Easy installation, direct bolt-on, no modification needed. We have straight and 90 degree angled oxygen sensors on sale. Material & Color: Material: made of high quality Stainle Steel. Color: as picture. Package Included: 1x 90 Oxygen Sensor Spacer.(100% Brand New Never Used Or Installed) Installation Steps: Jack up car if neceary, find extended bung which need to replace. Loosen old O2sensor spacer, bolt it on new 90 degree sensor spacer. Bolt new sensor spacer to pipe by hand firstly. Tighten with a wrench. Symptom of P0420/P0042 Codes Faulty: Uses an OBD-II scanner to retrieve trouble codes stored by the Powertrain Control Module (PCM).Faulty catalytic converter is the most common reason to cause fault codes P0420/P0042. There are 4 common indicators of faulty. 1. Check Engine Light is on. 2. Lack of power after vehicle warms up. 3. Speed of vehicle may not exceed 30-40 mph. 4. Rotten egg smell coming from the exhaust pipe. Install our oxygen sensor adapter which includes mini converter could help solve the problem.