Fuelab 51505-1-L-E Series EFI Fuel Pressure Regulator Large Seat - 515

The Fuelab 515 Series Fuel Pressure Regulator is engineered for high-performance EFI applications requiring precise fuel delivery control. This large seat configuration features a robust billet aluminum construction with military-spec Type II anodizing for exceptional durability and corrosion resistance.

Key Features:

• Adjustable EFI pressure range supporting up to 125 PSID for demanding fuel injection systems
• Dual -6AN inlet ports with one -6AN bottom-mounted return port for flexible plumbing configurations
• Large seat design for maximum flow capacity in high-horsepower applications
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• Fine thread pitch adjustment for precise pressure tuning
• 1/8 NPT gauge port with plug for external pressure monitoring
• 1/8 NPT pressure reference port with barbed fitting for manifold vacuum/boost reference
• Accepts both port-style and non-port-style union fittings without interference
• Includes versatile mounting bracket with stainless steel hardware
• Backed by Fuelab's 2-year limited warranty

The 515 Series regulator provides the precision control and reliability demanded by modern EFI systems, making it ideal for street performance, racing, and high-output engine builds.