DeatschWerks DWR550C Adjustable Carburetor Fuel Pressure Regulator – 6AN Fittings | w/ Gauge | Universal

Precisely control fuel pressure in your carbureted fuel system with the DeatschWerks DWR550C Adjustable Carburetor Fuel Pressure Regulator — 6AN Fittings version — a compact, fully adjustable carburetor-specific fuel pressure regulator engineered by DeatschWerks, a trusted name in high-performance fuel system components. The DWR550C is designed for carbureted applications operating in the low fuel pressure range typical of carburetor fuel systems (approximately 4–9 PSI) — not for EFI applications. This variant includes 6AN fittings for direct connection to 6AN braided fuel line systems. Includes a fuel pressure gauge for immediate installation and monitoring. Anodized black finish.

6AN Fittings Variant: This is the 6AN fittings version of the DWR550C — includes 6AN fittings for use with 6AN braided fuel line. For the 3/8" barb fitting version (for standard rubber fuel line), see part number 6-0550-FRB-38.

⚠️ Carburetor Applications Only – Not for EFI: The DWR550C is a carburetor-specific fuel pressure regulator designed for the low fuel pressure range of carbureted fuel systems. It is NOT suitable for EFI (electronic fuel injection) applications, which require significantly higher fuel pressure. Verify your fuel system type before ordering.

Key Features

• 6AN Fittings Included – Braided Line Ready: 6AN fittings included for direct connection to 6AN braided stainless fuel line — the preferred choice for performance and custom fuel system builds using AN-style braided line. For standard 3/8" rubber fuel line, see the 3/8" barb variant (6-0550-FRB-38)
• Adjustable Fuel Pressure – Carburetor Range: Fully adjustable fuel pressure regulation for carbureted fuel systems — dial in the precise fuel pressure required by your carburetor for optimal air/fuel ratio and performance. Carburetor-specific pressure range (approximately 4–9 PSI)
• 6AN x4 Inlets / 6AN Return: Four 6AN inlet ports and one 6AN return port — flexible plumbing configuration for a wide range of carbureted fuel system layouts
• Fuel Pressure Gauge Included: Fuel pressure gauge included for immediate fuel pressure monitoring after installation
• Compact Design: Compact regulator body for easy installation in tight engine bays and custom fuel system layouts
• Anodized Black Finish: Anodized black finish for corrosion resistance and a clean, purposeful appearance
• Universal Fitment: Universal design compatible with a wide range of carbureted fuel system applications
• DeatschWerks Quality: Manufactured by DeatschWerks — a trusted name in high-performance fuel system components including injectors, fuel pumps, and fuel system hardware

Specifications

• Type: Adjustable Fuel Pressure Regulator (Carburetor)
• Model: DWR550C
• Inlets: 6AN x4
• Return: 6AN x1
• Included Fittings: 6AN
• Gauge: Included
• Finish: Anodized Black
• Application: Carbureted Fuel Systems Only
• Fitment: Universal
• Part Number: 6-0550-FRB-66

Note: Carburetor applications only — not for EFI. For the 3/8" barb fitting version, see DeatschWerks part 6-0550-FRB-38. Verify your carburetor's required fuel pressure range before setting the regulator. Verify fuel compatibility (gasoline, E85, methanol) before ordering. Professional installation by an experienced fuel system specialist is recommended — fuel system work involves fire hazard if performed incorrectly.