DeatschWerks 6-0550-FRB-66 DWR550c Adjustable Carburetor Fuel Pressure Regulator with 6AN Fittings and Gauge

The DeatschWerks DWR550c (6-0550-FRB-66) is a compact, fully adjustable carburetor fuel pressure regulator designed for high-performance carbureted fuel systems. Built from T6061 aluminum with a durable black anodized finish, this regulator delivers precise, consistent fuel pressure control in a package engineered to fit tight engine bays.

This kit includes pre-installed -6AN fittings and a fuel pressure gauge, making it a ready-to-install solution for carbureted applications. With four -6AN inlet ports and one -6AN return port, the DWR550c offers flexible plumbing configurations to suit a wide variety of carbureted fuel system layouts.

Key Features:

• Carburetor-specific design — optimized for the low pressure range typical of carbureted fuel systems (approximately 3–10 PSI); not for EFI use
• Four -6AN inlet ports and one -6AN return port for versatile installation options
• Free flow rating of 550 GPH / 1000 LPH to support high-demand fuel delivery
• 1/8 in NPT gauge port included for easy pressure monitoring
• 3/16 in vacuum reference port for manifold vacuum connection
• T6061 aluminum construction with black anodized finish for strength and corrosion resistance
• Ethanol compatible for use with E85 and blended fuels
• Fuel pressure gauge included for immediate monitoring out of the box
• Backed by a DeatschWerks Limited Lifetime Warranty

The DWR550c is a purpose-built carburetor regulator for performance builders who demand accurate fuel pressure management. Its compact body, complete fitting kit, and included gauge make it one of the most convenient and capable carbureted regulators available for street and race applications.