FUELAB® 515 Series Fuel Pressure Regulators are designed with
performance and flexibility in mind. They accept port style and non-port
style union fittings without interference. Several configurations are
available, supporting carbureted applications as low as 1 PSID to fuel
injected applications up to 125 PSID. The 515 Series Fuel Pressure
Regulator has a -6AN return port located on the bottom.