Fuelab 52503-2-L-E EFI Fuel Pressure Regulator Series In-Line Large Seat - 525

The Fuelab 525 Series Adjustable Fuel Pressure Regulator is engineered for high-performance EFI applications demanding precise fuel pressure control in confined spaces. This in-line, large seat regulator features a unique design with the return port positioned in-line with the inlet port rather than on the bottom, enabling installation in extremely tight engine compartments where traditional regulators won't fit.

Key Features:

• EFI configuration supporting up to 125 PSID for fuel injected applications
• In-line return port design for installation in tight locations
• -6AN inlet and -6AN return port configuration
• Large seat design for increased flow capacity
• 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 included
• Versatile mounting bracket with stainless steel hardware

Construction & Compatibility:

• CNC-machined billet aluminum construction
• Military-spec Type II anodizing per MIL-A-8625 for corrosion resistance
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• Accepts both port style and non-port style union fittings without interference

Backed by Fuelab's 2-year limited warranty, this regulator delivers the precise fuel pressure control required for modern EFI systems while offering the installation flexibility demanded by today's performance builds.