Please check notes in each part listing to ensure the Hold Down Spring Bottom Cup is correct for your 1966 PONTIAC BONNEVILLE with a 6.9L 421 engine. DORMAN & RAYBESTOS are competing brands, and each brand's Hold Down Spring Bottom Cup may be interchangeable. Special restrictions like "California only" or "with sport package" may indicate a Hold Down Spring Bottom Cup fits only certain 1966 PONTIAC BONNEVILLE models.

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

After choosing a Hold Down Spring Bottom Cup, 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 Brake/Wheel Hub parts, other PONTIAC BONNEVILLE 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 1966 PONTIAC will not be lost if you switch.