Delphi FG2859 Fuel Pump Module Assembly

Fuel Pump Module Overview

Delphi FG2859 is a specific-fit fuel pump module assembly for select Hyundai and Kia applications. It combines the pump, sending unit, regulator, strainer, fuel filter, seal, and tank pressure sensor in one assembly for a direct replacement approach.

Fits 2021-2025 Hyundai Elantra and 2022-2023 Kia Seltos. Delphi FG2859 is built for gasoline systems and uses a turbine-style electric pump with a quick-connect outlet and a trapezoid, two-connector layout.

Key Features

• Specific-fit fuel pump module assembly for targeted applications
• Includes fuel sending unit, regulator, strainer, fuel filter, and seal
• Turbine pump design with 12-volt electric operation
• Quick-connect outlet and female connector configuration
• Fuel tank pressure sensor included for integrated system service
• Premium-grade construction with plastic housing and nitrile rubber seal material

Detailed Description

Delphi FG2859 is engineered as a complete fuel delivery module for gasoline vehicles that require integrated pump, level-sending, and pressure-sensing functions. The assembly is rated for a 51 to 57 psi operating range, with an average flow rating of 25 and an average current draw of 8. Its specific-fit design supports clean replacement service on Hyundai Elantra and Kia Seltos fuel systems without adapting a universal unit.

Delphi FG2859 cross-references Hyundai/Kia OE numbers 31111-C9000 and 31120-AA000 for the same application. Delphi brings more than 80 years of fuel system manufacturing experience and a long history as a Tier 1 supplier to global vehicle manufacturers.

Common Replacement Issues

• Hard starting caused by weak fuel delivery
• Fuel level reading errors from a worn sending unit
• Pressure irregularities from a failing regulator or pump
• Fuel starvation under load from a restricted or worn module
• Check engine concerns tied to tank pressure sensor faults

Installation Notes and Quality

Verify connector shape, outlet type, and tank opening requirements before installation. This module uses a quick-connect outlet, a trapezoid connector shape, and a seal included in the package contents. Mounting hardware, a lock ring, and a wire harness are not included.

Delphi FG2859 is backed by Delphi’s OE-focused fuel system engineering and manufacturing background. The brand’s fuel technology portfolio includes proprietary innovations and patented designs used across global vehicle platforms.