Fuelab 54501-2 Mini Adjustable Fuel Pressure Regulator EFI In-Line

The Fuelab 54501-2 is a compact 545 Series adjustable fuel pressure regulator designed specifically for EFI applications with in-line mounting. This mini regulator delivers the same performance as Fuelab's 515/525 series but in a package that's 50% lighter and significantly more compact for tight engine bay installations.

Key Features:

• Mini design is 50% lighter than standard 515/525 series regulators
• Adjustable pressure range suitable for fuel injected applications up to 125 PSID
• In-line return port configuration aligns with the inlet port for easy installation in extremely tight spaces
• Accepts both port style and non-port style union fittings without interference
• Precision-machined aluminum construction for durability and weight savings
• In-line mounting configuration for space-constrained EFI systems

The 545 Series distinguishes itself from the 535 Series with its unique return port placement—positioned in-line with the inlet rather than on the bottom. This design choice makes the 54501-2 ideal for installations where space is at a premium and bottom-mounted return ports would create clearance issues. Perfect for modern EFI systems requiring precise fuel pressure control in a compact footprint.