Delphi FG1646 Fuel Pump Module Assembly

Delphi FG1646 Fuel Pump Module Assembly

The Delphi FG1646 fuel pump module assembly is a standard replacement for select BMW fuel systems that require an in-tank electric pump with an integrated fuel level sender and regulator. Built from Delphi’s OE heritage and application knowledge, it supports consistent fuel delivery for BMW X3 and BMW X4 models listed below.

• In-tank electric fuel pump module assembly for gasoline applications
• 12.0-volt design with 44 psi system pressure and 87.0 maximum pressure
• Fuel pressure regulator included for integrated system service
• Fuel level sender assembly included with 990.0 ohms empty and 50.0 ohms full resistance
• Quick-connect outlet, pin terminals, and male terminal design
• Strainer and gasket/seal included for replacement service
• Standard replacement part for OE-style fit and function

Vehicle Fitment

• Fits 2015-2018 BMW X4, N/A. Clean fuel tank before installing fuel pump to prevent future seal problems.
• Fits 2014-2017 BMW X3, N/A. Clean fuel tank before installing fuel pump to prevent future seal problems.
• Fits 2013 BMW X3, N/A. From 04/2012; fuel tank contamination is the leading cause of premature fuel pump failure. Clean the fuel tank before installing a new pump; use of fuel tank cleaning kit FC01 is recommended.

Detailed Description

Delphi FG1646 is engineered as an in-tank fuel pump module assembly for gasoline vehicles, combining the pump, sender, regulator, and sealing components in one service part. It uses a 12-volt electric pump with an average current draw of 10 and an average flow rating of 45, helping restore fuel delivery performance in the BMW X3 and BMW X4 applications listed here. The quick-connect outlet and pin-style terminals support direct replacement service, while the included strainer helps protect the pump inlet during operation.

This part cross-references Delphi DFG1646 and SP5152M for the same application.

What It Helps Fix

• Hard starting caused by weak or inconsistent fuel delivery
• Engine stalling from low fuel pressure
• Fuel gauge errors related to a failing sender assembly
• Noise or drivability issues from a worn in-tank pump module
• Fuel system service needs after contamination-related pump failure

Installation Notes and Tips

Before installing this fuel pump module assembly, clean the fuel tank thoroughly to reduce the risk of repeat failure from contamination. Delphi notes that tank contamination is a leading cause of premature pump failure, and the 2013 BMW X3 application specifically recommends cleaning the tank before replacement; use of fuel tank cleaning kit FC01 is recommended for that application. Verify connector style, outlet type, and fuel system specifications before installation.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge used by major automakers. That OE background is built into its aftermarket fuel system parts, including this FG1646 module assembly, to support consistent replacement quality for the listed BMW applications.