Our O2 sensor spacers with built-in mini catalytic converters solve CEL issues (codes like P0420 / P0430) affordably and reliably. Designed to work with a wide range of vehicles, they prevent false triggers, improve exhaust flow, and maintain optimal engine performance. Stocking up is perfect for repair shops, resellers, and performance enthusiasts, as it ensures you always have trusted, ready-to-install solutions on hand for customers or projects. With bulk purchasing options, you can save more, keep inventory ready for multiple vehicles, and provide a cost-effective solution without compromising quality. Easy to install and compatible with most common oxygen sensor thread sizes, our mini catalytic O2 spacers are the go-to choice for anyone looking to fix CEL issues efficiently and maintain vehicle performance.