Please check notes in each part listing to ensure the Rocker Arm Nut is correct for your 1979 CHEVROLET IMPALA with a 5.0L 305 engine. Special restrictions like "California only" or "with sport package" may indicate a Rocker Arm Nut fits only certain 1979 CHEVROLET IMPALA models.
Clicking a "More Info" link will display a picture and/or other details about that Rocker Arm Nut in a separate window (you may need to turn off your pop-up-blocking software for this to work).
After choosing a Rocker Arm Nut, 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 Engine parts, other CHEVROLET IMPALA 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 1979 CHEVROLET will not be lost if you switch.
