Please check notes in each part listing to ensure the Front Pump Seal is correct for your 2003 CHEVROLET EXPRESS 1500 with a 5.3L 323 OHV engine. Special restrictions like "California only" or "with sport package" may indicate a Front Pump Seal fits only certain 2003 CHEVROLET EXPRESS 1500 models.

Clicking a "More Info" link will display a picture and/or other details about that Front Pump Seal in a separate window (you may need to turn off your pop-up-blocking software for this to work).

After choosing a Front Pump Seal, 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 on "Find More Parts", to find more Transmission-Automatic parts, other CHEVROLET EXPRESS 1500 parts, or parts for a different vehicle. Please try our Interactive Catalog (click red Start button 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.