The Fuelab FLB-525 in-line CARB adjustable fuel pressure regulator is calibrated for low-pressure carbureted systems with a 4–12 psi range in an inline form factor. It includes a single -6AN inlet and one -6AN return and is marketed as a universal, user-adjustable regulator to deliver stable low-range pressure and straightforward plumbing for carburetor fuel lines.
Fuelab 525 Carb Adjustable FPR In-Line 4-12 PSI (1) -6AN In (1) -6AN Return - Black