Fuel Pump Check Valve -8 Male Flare to 12mm x 1.5

The Fuel Pump Check Valve -8 Male Flare to 12mm x 1.5 from VIBRANT PERFORMANCE is an essential component for custom fuel system builds and high-performance engine modifications. This check valve prevents fuel backflow and siphoning from the tank when the engine is off, protecting your fuel pump and injection system from damage caused by pressure loss or reverse flow. Whether you're building a carbureted hot rod, upgrading a classic muscle car's fuel delivery, or engineering a forced-induction setup, this compact valve ensures fuel system integrity and reliable engine start-up every time.

This check valve uses a direct flange-mount design with a -8 AN male flare inlet and a 12mm x 1.5 metric threaded outlet, making it compatible with both traditional and modern fuel line standards. The internal one-way poppet mechanism opens under positive pump pressure to allow fuel flow while instantly sealing during shutdown, preventing vapor lock and fuel tank siphoning that can occur in performance applications. Vibrant Performance's precision engineering ensures low cracking pressure for smooth fuel delivery while maintaining robust sealing integrity—critical for turbo and supercharged engines where fuel system reliability directly impacts engine performance and safety.

Mechanics and fabricators commonly install this valve between the fuel tank outlet and the main fuel pump line on street rods, race cars, and retrofitted classics. Its compact footprint (3.1 x 1.2 x 3.6 inches) allows flexible routing in tight engine bays, while the mixed flare and metric port configuration adapts to both vintage carb fuel systems and fuel-injected platforms. The lightweight construction (0.1 lbs) adds negligible weight, making it ideal for weight-conscious builds. Installation requires basic fuel line crimping skills and compatible -8 AN hose or banjo adapters, ensuring your custom fuel system operates reliably under all engine conditions.