Fuelab 54501-3 Mini Fuel Pressure Regulator Series EFI In-Line - 545

The Fuelab 545 Series Adjustable Mini Fuel Pressure Regulator delivers precision fuel control in a compact, lightweight design that weighs 50% less than traditional regulators. This in-line EFI regulator features a unique return port configuration positioned in-line with the inlet port rather than on the bottom, enabling easy installation in extremely tight engine bay locations where space is at a premium.

Key Features:

• Compact mini design weighs 50% less than standard 515/525 series regulators
• In-line return port configuration for tight-space installations
• Accepts both port-style and non-port-style union fittings without interference
• Adjustable fuel pressure designed for EFI applications
• Supports fuel injected applications up to 125 PSID
• Precision-engineered for consistent fuel pressure regulation
• Compatible with -6AN fittings

The 545 Series is ideal for high-performance fuel injection systems where space constraints demand a smaller regulator without sacrificing performance. The in-line return port design distinguishes this model from the 535 Series (which features a bottom-mounted return port), making it the preferred choice for installations in cramped engine compartments or along fuel rails where vertical clearance is limited.