Need a replacement catalytic converter for your 2003 Lexus ES300? MagnaFlow offers high-quality catalytic converters engineered for 2003 Lexus ES300 sub-models and engine sizes. We combine efficient design and state-of-the-art manufacturing to meet or exceed required emissions standards. Select your 2003 Lexus ES300 requirements and state vehicle registration to buy the best ES300 catalytic converter online that fits your '03 ES300 and meets your state’s emissions compliance.

Need a 2003 Lexus ES300 replacement exhaust system? Shop all BRExhaust 2003 Lexus ES300 Direct-Fit Replacement Exhaust Systems to find the best aftermarket kit to replace your 2003 Lexus ES300 OEM exhaust.