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NEW FUEL PUMP ASSEMBLY Delphi Technologies Model HFP923

$140.00

SKU 144679175904 Category
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Product Detail

Delphi HFP923 Mechanical Fuel Pump


About this item 

  • Delphi brings 80 + years of OE Heritage into each Delphi pump, ensuring quality and fitment for each Delphi part. 
  • Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards 
  • Rigorous OE-testing ensures the pump can withstand extreme temperatures ranging from -32 C to 65 C 
  • Replacing the fuel filter and strainer is always recommended when replacing a fuel pump

From the manufacturer

Where Does Delphi Quality Come From? 

OE Engineered

Durability Tested

For Over 80 Years

Innovative Design

OE Engineered 

Our parts are engineered with the same stringent standards applied to the parts we make for the top global OEMs. 

Durability Tested 

Our rigorous testing ensures reliability and readiness for the road ahead. In fact, our parts are tested up to 150,000 miles and in more than 20% ethanol. 

For Over 80 Years 

Our expertise goes back to the beginning and we’re still innovating today. We’ve been a manufacturer of dependable fuel delivery parts for over 80 years. 

Innovative Design 

We utilize the latest OE technology and components to bring OE quality and durability to our fuel line and even make enhancements over some OE designs. In fact, we hold more than 30 OE-proprietary innovations and patents in fuel alone. 

fuel module, fuel pump  

Delphi, quality

Fueled by Innovation: Delphi’s OE DNA 

When it comes to choosing the parts for fuel delivery systems, reach for the brand that delivers the most advantages: Delphi. In the aftermarket, we’re best known for our fuel management program. As a world manufacturer in fuel pump technology and an OE manufacturer, we apply our high quality standards to every part we sell. 

Why Do Fuel Pumps Fail? 

OE fuel modules and hanger/senders, which house the electric fuel pump, typically operate for 7-10 years before failure, depending on a variety of circumstances. Premature failures can be caused by: 

  • Extreme hot/cold environments 
  • Contaminated fuel, which can cause rust or corrosion 
  • Excessively running a vehicle on an empty tank. Running near empty does not keep the fuel pump fully submerged and can cause the pump to overheat. 
  • 21% of returned fuel pumps failed because they operated in a contaminated system. Before installing a new pump, make sure to visually inspect for dirt, rust or discoloration. 

Tech Tips 

Clean fuel tank

pressure gauge, pressure test, low fuel pressure, no fuel pressure, high fuel pressure

voltmeter, multimeter, voltage drop test, diagnosis

Start Your New Pump in a Clean Environment 

Replacing the fuel pump strainer is required, but it is not enough if the tank is dirty. Make sure to inspect and clean the fuel tank as well. 

Clogged filters are a leading cause of premature pump failure, so replace the fuel filter if it is not internal to the assembly. Internal filters are not serviced separately. 

A Pressure Test is Not Enough to Condemn the Pump 

High fuel pressure can often be attributed to a fuel pressure regulator issue or a restriction in the return line. The engine may run rich or fuel trims may be elevated. 

Low fuel pressure can be caused by insufficient power or ground to the fuel pump or a malfunctioning fuel pressure regulator. Contamination in the system can cause restrictions to the fuel feed lines, fuel strainer, or fuel filter. 

No pressure can be due to a faulty relay, fuse, wire harness, or oil pressure switch, tripped inertia switch, or dried test fluid. 

What to Check Prior to Repair 

The pump may not necessarily be the cause of fuel-related driveability problems or failures. So make sure to: 

1. Confirm there is fuel in the fuel tank 

2. Check fuel pressure 

3. Check flow 

4. Check fuel filter and pressure regulator 

5. Perform a voltage drop test 

6. Check electrical connections 

7. Clean tank and inspect for debris 

diagnosis, safety

What Tools Will I Need? 

Safety glasses and gloves are always recommended. Delphi also recommends a digital voltmeter, pressure gauge, and graduated cylinder. You should always have a fire extinguisher on hand. 

Safety first 

Never smoke or work near anything that could cause a spark or ignite fuel, such as pilot lights or incandescent light bulbs. Work in a well-ventilated area. Keep clean-up materials on hand, and clean up any spills immediately. 

Always relieve fuel pressure prior to opening fuel systems. Store fuel in an approved container like a gas caddy or gas can. 

fuel module, fuel module assembly

Fuel Module Assemblies 

The Delphi fuel module is a complete assembly, meaning that all the necessary components, like filters and strainers, are included for easier installation. It’s a complete repair in a box, backed by smart designs, and extreme testing. 

fuel module, fuel module assembly

Delphi Fuel Modules 

 

hanger pump assembly

Delphi Hanger Pump Assemblies 

 

electric fuel pump, fuel pump

Delphi Electric Fuel Pumps 

 

And more