1、IMPROVED FUEL ECONOMY: The fuel pressure regulator dynamically regulates fuel pressure so that the fuel system can deliver the right amount of fuel for the engine's needs, thus improving fuel economy. 2、IMPROVES ENGINE PERFORMANCE: Based on parameters such as engine load and speed, the fuel pressure regulator precisely controls fuel pressure levels to ensure that fuel supply and demand are matched, thereby improving engine performance and enhancing power. 3、REDUCE EMISSIONS: EFI fuel pressure regulator controls the flow of fuel to make the engine burn more fully, which can effectively reduce the emissions of the car and reduce the pollution to the environment. 4、ENHANCE DRIVING COMFORT: Proper fuel pressure is the key to ensure smooth engine operation. With the help of EFI fuel pressure regulator, the engine will be more stable and can provide excellent driving experience and comfort. 5、WITH PRESSURE GAUGE: EFI fuel pressure regulator comes with a pressure gauge, owners can monitor the change of fuel pressure at any time, diagnose and solve engine problems, and repair in time to extend the engine life. Item Type: Fuel Pressure Regulator Material: Metal OE: 12-846 Adjustment Range: 15-65 Psi Base Process Finish: Black Anodized Inlet and Outlet ID Size: 8AN Return Port ID Size: 6AN Fuel System: EFI Fuel Type: Gasoline or Diesel E85 Pressure Gauge Port: 1/8in NPT Function: Effectively regulates fuel supply pressure to ensure proper engine operation and provide the required performance and economy. Application: Used in systems with a return line back to tank 1 x Fuel Pressure Regulator 1 x Pressure Gauge 1 x Mounting Base 3 x Fitting 1 x Screw Kit (With 19 Accessories)