AirDog Fuel Air Separation System for Chevrolet 6.6L Duramax 4G PureFlow

AirDog PureFlow FP-100-4G for Chevrolet 6.6L Duramax (4G) AirDog Fuel Air Separation System engineered for Chevrolet 6.6L Duramax 4G delivers reliable fuel conditioning and protection for modern diesel engines. The PureFlow FP-100-4G removes air, water and contaminants from fuel before it reaches the injection system, improving performance and extending component life. Optimized for 6.6L Duramax 4G — precise fit and flow rates to meet OEM requirements. Advanced air & water separation — prevents cavitation, erratic fueling and poor injector performance. Consistent fuel pressure — reduces pump load and stabilizes injection for smoother idle and responsiveness. Longer fuel system life — protects lift pumps, fuel rails and injectors from contaminants and moisture. Durable construction — built for heavy-duty use and harsh environments. Ideal for daily drivers, towing and off-road use, the AirDog PureFlow FP-100-4G is a high-performance upgrade that helps maintain fuel system integrity and engine efficiency. Backed by AirDog engineering and support, it’s a smart investment for Duramax owners seeking dependable fuel delivery and long-term protection.