Mopar Chrysler BB 383 440 Freeze Plug Kit Impala and Buick Roadmaster

Impala and Buick Roadmaster

Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure

voltage-insulating materials

These Speedmaster valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines

Mopar Chrysler BB 383 440 Freeze Plug Kit Impala and Buick RoadmasterSpeedmaster freeze plugs will not rot out, like lower cost steel ones. Your new engine assembly deserves the best. Don't get stuck trying to replace a leaking steel freeze plug behind a motor mount a year or two from now! These kits include all of the necessary external block freeze plugs, and cam and oil galley plugs for one complete engine.