Fuelab 63803 Adjustable Fuel Pressure Regulator

The Fuelab 63803 is a high-performance adjustable fuel pressure regulator engineered for demanding fuel system applications. Fuelab regulators are precision-machined from billet aluminum and are designed to deliver consistent, accurate fuel pressure regulation across a wide range of fuel flow demands.

Key Features:

• Precision billet aluminum construction for durability and corrosion resistance
• Adjustable fuel pressure output to suit a variety of fuel system configurations
• Compatible with gasoline, ethanol (E85), and methanol fuel types
• High-flow design minimizes pressure drop at elevated flow rates
• Compact, lightweight form factor for easy installation in tight engine bays
• Anodized finish for long-term protection against fuel and environmental exposure

Fuelab's 638-series regulators are a trusted choice for performance enthusiasts and professional builders seeking reliable fuel pressure control. The 63803 is built to OEM-replacement and performance-upgrade standards, making it suitable for street, track, and competition use.