Fuelab 52501-2 Adjustable Fuel Pressure Regulator EFI In-Line -6AN

The Fuelab 52501-2 is a 525 Series adjustable fuel pressure regulator engineered for EFI applications requiring precise fuel delivery control. This in-line regulator features a unique design with the return port aligned with the inlet port, making it ideal for installations in tight engine compartments where space is limited.

Key Features:

• Adjustable pressure range suitable for fuel injected applications up to 125 PSID
• In-line configuration with -6AN inlet and -6AN return port for space-saving installation
• Compatible with gasoline, diesel, methanol, and ethanol fuels
• Precision-machined billet aluminum construction with military-spec Type II anodizing (MIL-A-8625)
• Fine thread pitch adjustment mechanism for accurate pressure tuning
• Accepts both port-style and non-port-style union fittings without interference
• 1/8 NPT gauge port with plug for external pressure gauge monitoring
• 1/8 NPT pressure reference port with barbed fitting for manifold vacuum connection
• Includes versatile mounting bracket with stainless steel hardware
• Backed by 2-year limited manufacturer warranty

The 525 Series regulator combines robust construction with user-friendly adjustability, making it an excellent choice for street performance, racing, and high-performance EFI applications where reliable fuel pressure regulation is critical.