Please check notes in each part listing to ensure the Spark Plug is correct for your 1973 FLAGSHIP All Models with a 7.0L 427 engine. AUTOLITE & NGK are competing brands, and each brand's Spark Plug may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Spark Plug fits only certain 1973 FLAGSHIP All Models 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 "Find More Parts" to find more Ignition parts, other FLAGSHIP All Models 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 1973 FLAGSHIP will not be lost if you switch.
