Please check notes in each part listing to ensure the Spark Plug is correct for your 1963 PLYMOUTH COMMANDO with a 6.3L 383 4BBL engine. Special restrictions like "California only" or "with sport package" may indicate a Spark Plug fits only certain 1963 PLYMOUTH COMMANDO models.
Clicking a "More Info" link will display a picture and/or other details about that Spark Plug in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Spark Plug, 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 Ignition parts, other PLYMOUTH COMMANDO 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 1963 PLYMOUTH will not be lost if you switch.