When a high-flow catalytic converter or test pipe is used on a late model car it’s guaranteed that CEL (Check Engine Light) will come on. This CEL is caused by a fault code that indicates an inefficient catalytic converter.

Our CEL eliminator is CNC machined in-house from high quality cold roll steel for a long-lasting effective performance. M18x1.5 thread to make it a universal fit for all standard sensors.

Install this spacer on your REAR (downstream, post-cat) oxygen sensor to effectively remove the code for catalyst efficiency. This is recommended for vehicles factory stock software.

FOR OFF-ROAD or TESTING USE ONLY! This is a universal product that works on variety of vehicles, however it is not effective on some cars.

This product is not intended to and will not provide emissions compliance.

Emissions laws vary by province, state, region or country. Check local and federal laws before modifying your exhaust system.

Emissions compliance is the sole responsibility of the owner.

NOTE: This part does not guarantee that the CEL will turn off. This product is sold as a final sale, no returns are accepted.