Please check notes in each part listing to ensure the Catalytic Converter is correct for your 2003 CHEVROLET ASTRO with a 4.3L engine. DAVICO MANUFACTURING, EASTERN CATALYTIC, BOSAL, & WALKER are competing brands, and each brand's Catalytic Converter may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Catalytic Converter fits only certain 2003 CHEVROLET ASTRO models.
Clicking a "More Info" link will display a picture and/or other details about that Catalytic Converter in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Catalytic Converter, click the "Add Part" button. Shipping costs will be shown on the Shopping Cart page. You may use your browser's Back button or click "Find More Parts" to find more Exhaust parts, other CHEVROLET ASTRO parts or parts for a different vehicle. Please try our Interactive Catalog (click link above) for faster searching. Both catalogs use the same shopping cart so any auto parts you've already chosen for your 2003 CHEVROLET will not be lost if you switch.