AEM - Fuel Pressure Regulator Select Make     Acura   Alfa Romeo   AM General   American Motors   Aston Martin   Asuna   Audi   Austin   Avanti   Bentley   Bertone   BMW   Bricklin   Bugatti   Buick   Cadillac   Checker   Chevrolet   Chrysler   Citroen   Daewoo   Daihatsu   Delorean   Detomaso   Dodge   Eagle   Excalibur   Ferrari   Fiat   Ford   Geo   GMC   Honda   Hummer   Hyundai   Infiniti   International   Isuzu   Jaguar   Jeep   Jensen   Kia   Lada   Laforza   Lamborghini   Lancia   Land Rover   Lexus   Lincoln   Lotus   Maserati   Maybach   Mazda   Mercedes Benz   Mercury   Merkur   MG   Mini   Mitsubishi   Morgan   Morris   Nissan   Oldsmobile   Opel   Panoz   Peugeot   Plymouth   Pontiac   Porsche   Qvale   Renault   Rolls Royce   Rover   Saab   Saleen   Saturn   Scion   Shelby   Sterling   Studebaker   Subaru   Sunbeam   Suzuki   Toyota   Triumph   Volkswagen   Volvo   Yugo   Select Vehicle Year... Select Vehicle Make...   "On Time Every Time! You Can Count On PartsTrain!" Featured Makes Acura BMW Buick Cadillac Chevy Chrysler Dodge Eagle Ford GMC Honda Hummer Hyundai Infiniti Jeep Lexus Lincoln Mazda Mercury Mitsubishi Nissan Plymouth Pontiac Porsche Saab Saturn Scion Subaru Suzuki Toyota Volkswagen     Home > Shop By Brand > AEM > Fuel Pressure Regulator Featured Subbrands Air Filter Recharge Kit Air Fuel Ratio Gauge Air Temperature Sensor Adaptor Boost Controller Cam Gears Cam Gears Tool Cold Air Intake Cold Air Intake Filter Cold Air Intake Mounting Bracket Engine Management System Exhaust System Fuel Filter Fuel Rail Fuel Rail Adapter Headers Intake Bypass Valve Oil Cap Performance Brakes Performance Pulleys Power Programmer Spark Plug Wire Cover Strut Bar Throttle Body Spacer AEM Fuel Pressure Regulator Your car's fuel regulator may fail as a result of low pressure. To verify this, you can pinch off the fuel return line to see if the pressure rises. Oftentimes the diaphragm will develop leaks and while the fuel pressure is not affected, fuel finds its way into the vacuum lines causing a couple of problems and most them are MAP sensor related. Mounted to the firewall, the fuel pressure regulator is a cylindrical metal object connected to the fuel rail. It is also equipped with vacuum connection. The job of the fuel pressure regulator is to keep pressure in the fuel system to a constant 28 psi.   In doing this job, it is equipped with a spring loaded diaphragm that is responsible for controlling the valve. When opened by too much pressure in the fuel lines, this valve uncovers a fuel line that returns excess fuel to the fuel tank. In locating the fuel pressure regulator, you just need to follow the fuel rail around the engine. The fuel rail is the pipe whose function is to carry the fuel to all the injectors and the cold start valve. Basically, it comes on one side of the engine and goes out on the other. On the way out of the engine compartment, the fuel pressure is the last thing that the fuel gets to.   During the deceleration, the valve connection helps in the reduction of omission. In this process, the vacuum connection serves to open the fuel return valve wider which lessens the amount of pressure in the system as well as avoids excess hydrocarbon emission due to less fuel being injected resulting from the lower pressure within the system. Time will come that you will need to replace your stock fuel pressure regulator. AEM can give you the best replacement. Parts Trail got AEM line of products and one of them is the AEM fuel pressure regulator.   Featured Brands ACI ACT AFE APC APG Compressors ATS Absorber Accel Access Addco Aftermarket Agricover Aimco Air Lift Airaid Airtex Akebono AllView Mirror American Racing Ansa Apexi Autometer Autotecnica B&G B&M BAK BBK Backrack Baer Banks Bedrug Valley Venom Ventshade Vibrant Volant Vtech WAAG Wade Walker Warn Weapon R Weathertech Weber Weiand Westar Westin Window Canvas Xenon Zimmermann Featured Products BMW 530i - Fuel Pressure Regulator 3.5 Bar - Bosch. Brand: Bosch Price: $64.95 1994,1995 - 8Cyl 3.0L Base 1994,1995,2001,2002,2003 - -Cyl -L 2001,2002,2003 - 6Cyl 3.0L Base BMW 540i - Fuel Pressure Regulator 3.5 Bar - Bosch. Brand: Bosch Price: $64.95 1994,1995 - 8Cyl 4.0L Base 1994,1995,1997,1998,1999,2000,2001,2002,2003 - -Cyl -L 1997,1998,1999,2000,2001,2002,2003 - 8Cyl 4.4L Base BMW X5 - Fuel Pressure Regulator Brand: Bosch Price: $64.95 2000,2001,2002 - -Cyl -L 2000,2001,2002,2003 - 8Cyl 4.4L 4.4i 2001,2002,2003 - 6Cyl 3.0L 3.0i 2002,2003 - 8Cyl 4.6L 4.6is BMW 525i - Fuel Pressure Regulator 3.5 Bar - Bosch. Brand: Bosch Price: $64.95 1991,1992,1993,1994,1995,2001,2002,2003 - -Cyl -L 1991,1992,1993,1994,1995,2001,2002,2003 - 6Cyl 2.5L Base BMW 740i - Fuel Pressure Regulator 3.5 Bar - Bosch. Brand: Bosch Price: $64.95 1993,1994,1995 - 8Cyl 4.0L Base 1993,1994,1995,1997,1998,1999,2000,2001 - -Cyl -L 1998,1999,2000,2001 - 8Cyl 4.4L Base