Compatible Vehicles: for Mazda DX, ES, LX, Mazdaspeed 2.0L L4 - Gas 2003 for Mazda DX, ES, LX 2.0L L4 - Gas 2002 for Mazda ES, LX, MP3 2.0L L4 - Gas 2001 for Mazda ES 1.8L L4 - Gas 1999, 2000 for Mazda 5 Base 2.0L L4 - Gas 2002, 2003 OE Number:FP4713280CUnique Benefits: Function: To ensure normal fuel pressure in the fuel line of the car. Damage to the fuel pressure regulator will cause high fuel consumption and high gasoline pressure. The fuel pressure regulator keeps the pressure in the oil circuit to maintain constant. the oil pressure is too low, the injectors are too weak or have no oil injection, and the oil pressure is too high to destroy the oil circuit or injector damage. The fuel injection pressure regulator is located at the end of the fuel rail and connects to the injection of the vehicle. The fuel pressure regulator is made of durable metal materials, which is wearable, durable, anti-rust or oxidation, and prolongs service life. Special Features: Type: Fuel Pressure Regulator Material: Metal Product Color: Silver Tone Product Size: 10.3x5.3x3.5cm / 4.06"x2.09"x1.38"(L*W*H) Hole Diameter: 5mm / 0.20", 3mm / 0.12" Easy Installation: This is a non-OEM product, accessory ONLY! Please make sure the OE is the same before placing an order! Package Content:Package includes 1 Pc Fuel Injection Pressure Regulator