Delphi FG1665 Fuel Pump Module Assembly

Fuel Pump Module Assembly for Lexus ES350

Delphi FG1665 is an in-tank fuel pump module assembly for gas applications, built for 12-volt systems and standard replacement service. It includes the fuel level sender assembly, regulator, and strainer to support consistent fuel delivery in 2013-2018 Lexus ES350 applications.

Key Features

• In-tank electric fuel pump module assembly for gas fuel systems
• 12.0-volt operation with a maximum pressure rating of 95.0
• System pressure rated at 58 psi with an average flow rating of 55
• Fuel pressure regulator included for integrated fuel control
• Fuel level sender assembly included for accurate tank level reporting
• Internal strainer included; push-in outlet design with two outlets
• Blade terminals, male terminal gender, and 4-terminal configuration
• Standard replacement part engineered from Delphi OE heritage

Detailed Description

Delphi FG1665 fuel pump module assembly is built for direct service in Lexus ES350 fuel systems, including 2013-2014 and 2015-2018 Japan-built models. Delphi draws on OE experience and supplier knowledge from decades of original-equipment development, and that background is reflected in the module’s integrated design, fuel level sender, regulator, and internal strainer. The FG1665 is a practical choice when replacing a worn fuel pump module on a Lexus ES350, especially when the original unit shows signs of pressure loss, noisy operation, or inaccurate fuel level readings.

This part cross-references DFG1665 and E16448 for the same application.

What It Helps Address

• Hard starting caused by weak fuel pressure
• Engine hesitation or stalling from inconsistent fuel delivery
• Fuel gauge readings that no longer match tank level
• Low fuel pressure codes tied to pump wear
• Noise from a failing in-tank fuel pump module

Installation Notes and Tips

Compatible With 2013-2014 Lexus ES350 and 2015-2018 Lexus ES350, Japan Built. Clean the fuel tank before installing the replacement pump to reduce contamination-related failure risk; Delphi also recommends fuel tank cleaning kit FC01 for the 2015-2018 Lexus ES350 application. The module is supplied without a gasket or seal and without a lock ring, so verify the vehicle’s sealing components before installation. Confirm electrical connector style, outlet routing, and tank condition before final assembly.

Quality Assurance

Delphi FG1665 is backed by Delphi’s OE-focused engineering approach and aftermarket coverage for a wide range of vehicles and model years. The part is built as a standard replacement fuel pump module assembly for Lexus ES350 service.