Bring your Lexus IS300 back to peak performance with this high-flow catalytic converter from ZonCar. Specifically designed for the 2001-2005 IS300 with the 3.0L L6 engine (part number 54666). Made from durable stainless steel that resists heat, rust, and corrosion for a longer life. The honeycomb ceramic substrate is loaded with precious metals to efficiently reduce harmful emissions while maintaining good airflow. This high-flow design helps retain engine power and improve performance. Easy to install if you’re handy, but always check local emissions regulations. Backed by responsive customer support – reach out if you have any questions before or after your purchase.