Delphi HP10256 Fuel Pump Hanger Assembly

Delphi HP10256 Fuel Pump Hanger Assembly

Delphi HP10256 is a standard replacement fuel pump hanger assembly for in-tank gasoline applications. Built from Delphi’s OE experience and aftermarket engineering, it combines the fuel pump, fuel level sender assembly, float arm, seal, and strainer support in one service part for select Chevrolet trucks and SUVs.

Compatible with 1987-1991 Chevrolet Blazer, R10, R20, R30, V10, V20, V30, R10 Suburban, R20 Suburban, V10 Suburban, V20 Suburban, R2500, R3500, and V3500 applications with passenger side mount and auxiliary tank.

Key Features

• In-tank electric fuel pump hanger assembly for gasoline fuel systems
• 12-volt operation with a 25.0 maximum pressure rating and 14 psi system pressure
• Average flow rating of 37 and average current draw of 10
• Fuel level sender assembly included with 1.0 ohms empty and 90.0 ohms full resistance
• External strainer included, along with gasket/seal, lock ring, and instruction sheet
• Female pin terminals with 2 terminal quantity
• Outlet hose design with 3 outlet connections and 0.375 in. outlet outside diameter

Detailed Description

Delphi HP10256 is engineered as a direct-fit fuel pump hanger assembly for select Chevrolet C/K and utility applications from 1987 through 1991. It is built for in-tank use on gas vehicles and includes the fuel pump hanger assembly with float arm and sender components needed for fuel delivery and fuel level reporting. Delphi’s OE heritage and broad vehicle coverage are reflected in the part’s standard replacement design and application-specific construction.

This part cross-references Airtex Fuel Pumps E3630S for the same application. Delphi HP10256 is also referenced by Spectra Premium FG05N and SP05N1H applications.

Common Problems This Part Can Address

• Hard starting caused by weak or failing in-tank fuel pump output
• Erratic or inaccurate fuel gauge readings from a worn sender assembly
• Fuel delivery loss from a damaged hanger, outlet, or internal pump connection
• Poor engine performance related to low fuel pressure
• Service issues on Chevrolet Blazer, R10, R20, R30, V10, and related auxiliary tank applications

Installation Notes and Tips

• Confirm vehicle configuration before ordering: passenger side mount with auxiliary tank.
• Clean the fuel tank before installation to reduce the risk of contaminating the replacement pump.
• Inspect the tank, lines, and electrical connector condition before installing the new hanger assembly.
• Use the included seal and follow the instruction sheet during installation.
• Verify sender resistance and fuel pressure after installation to confirm proper operation.

Quality Assurance

Delphi builds this fuel pump hanger assembly using OE-focused engineering and application data developed through decades of supplying automakers. The HP10256 is a standard replacement part designed for the listed Chevrolet fitments and packaged with the components needed for service installation.