Delphi FP10312 Fuel Injection Pressure Regulator

Fuel Pressure Control for OE-Style Performance

Delphi FP10312 is a fuel injection pressure regulator built with a metal body and OE-based engineering for consistent fuel delivery control. It uses a push-in inlet, returnless outlet, and clamp mounting design for direct replacement service on select Audi, Volkswagen, Chrysler, Dodge, and Porsche applications.

With Delphi’s century of OE experience behind the design, this fuel pressure regulator is made for vehicles that need stable fuel rail pressure and reliable drivability. It is a strong match for Audi A4, A6, S4, and related fuel rail applications, as well as select Volkswagen Passat, Jetta, Golf, and Porsche 911 fitments.

Key Features

• Brand: Delphi
• Part number: FP10312
• Fuel injection pressure regulator for air and fuel delivery systems
• Metal construction for durability in engine-bay conditions
• Push-in inlet with returnless outlet configuration
• Clamp-mounted design
• Single inlet and single outlet layout
• No gauge port
• Non-adjustable regulator setting

Detailed Description

Delphi FP10312 is engineered as an OE-style fuel injection pressure regulator for vehicles that rely on precise fuel rail pressure control. The metal housing, push-in inlet, and returnless outlet configuration support clean integration into the fuel system, while the clamp mount helps secure the regulator in place on the intended fuel rail applications. This part number is commonly searched for Audi A4 fuel rail pressure regulator replacement, Volkswagen Passat fuel injection pressure regulator replacement, and Porsche 911 fuel system service.

This part cross-references Beck/Arnley 158-0966 and Standard Ignition PR401 for the same application. The Delphi FP10312 also aligns with select Audi A4 Quattro, A6 Quattro, S4, S6, S8, TT Quattro, Allroad Quattro, and Volkswagen R32 fitments listed below.

What It Helps Address

• Fuel pressure that is too high or too low at the rail
• Rough idle caused by unstable fuel delivery
• Hard starting related to inconsistent rail pressure
• Lean or rich running conditions tied to regulator wear
• Fuel system drivability issues on returnless fuel rail setups

Installation Notes and Tips

• Verify the inlet type, outlet type, and mounting style before installation.
• Confirm fuel rail location on applications that specify fuel rail mounting.
• Inspect surrounding fuel system components for wear, contamination, or damaged seals during service.
• Follow the vehicle service manual for fuel system depressurization and replacement procedures.
• Match the part number FP10312 to the vehicle’s exact fitment listing before ordering.

Quality Assurance

Delphi builds aftermarket parts using OE heritage and technical knowledge developed through long-term supplier relationships with major automakers. FP10312 reflects that OE-based approach for fuel system service on select Audi, Volkswagen, Chrysler, Dodge, and Porsche models.

• Fits 2011 Porsche 911, N/A
• Fits 2007-2009 Porsche 911, N/A
• Fits 2005-2008 Audi S4, N/A, Location - Fuel Rail
• Fits 2004-2006 Audi A4 Quattro, N/A, Location - Fuel Rail
• Fits 1997-2006 Audi A8 Quattro, N/A
• Fits 2004-2006 Audi TT Quattro, N/A
• Fits 2004-2006 Volkswagen Phaeton, N/A
• Fits 2004-2005 Audi A4, N/A, Location-Fuel Rail
• Fits 1997-2001 Audi A4, N/A, Location-Fuel Rail
• Fits 2001-2005 Audi Allroad Quattro, N/A
• Fits 1998-2005 Volkswagen Passat, N/A
• Fits 1993-1995 Volkswagen Passat, N/A
• Fits 1995-2004 Audi A6, N/A
• Fits 1995-2004 Audi A6 Quattro, N/A
• Fits 2004 Volkswagen R32, N/A, Location-Fuel Rail
• Fits 1996-2003 Audi A4, N/A
• Fits 1996-2003 Audi A4 Quattro, N/A
• Fits 2003 Audi RS6, N/A
• Fits 2002-2003 Audi S6, N/A
• Fits 1995 Audi S6, N/A
• Fits 2001-2003 Audi S8, N/A
• Fits 2000-2002 Audi S4, N/A
• Fits 1992-1994 Audi S4, N/A
• Fits 1997-1999 Audi A8, N/A
• Fits 1994-1998 Audi Cabriolet, N/A
• Fits 1995-1996 Chrysler Sebring, N/A
• Fits 1995-1996 Dodge Avenger, N/A
• Fits 1996 Volkswagen Passat, N/A, To Chassis/VIN 3A-TB012 000 (To Chassis/VIN 3A-TD140 000)(To Chassis/VIN 3A-TE140 000)
• Fits 1993-1995 Audi 90, N/A
• Fits 1993-1995 Audi 90 Quattro, N/A, Location-Fuel Rail
• Fits 1995 Volkswagen Golf, N/A
• Fits 1994-1995 Volkswagen Jetta, N/A
• Fits 1992-1994 Audi 100, N/A
• Fits 1992-1994 Audi 100 Quattro, N/A
• Fits 1992-1994 Volkswagen Corrado, N/A