Buy Armor Engine Restoration Foam Cleaner (A) is a specially designed restoration product designed for today’s high-performance, low-tolerance engines. It cleans, conditions, and restores through a two-part application process that includes a foaming cleaner and a neutralizer. It restores turbochargers, air intakes, EGR valves, and other components to like-new condition. It is also compatible with all engine components and is guaranteed not to damage seals.