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Buy New, Used, & Rebuilt Diesel Engine Fuel Injection Pumps Online

Goldfarb and Associates offers the highest quality of new and remanufactured genuine OEM diesel fuel injectors from manufacturers such as Bosch, Stanadyne, Delphi, Denso, Zexel, and more. With thousands of injectors in stock at all times, Goldfarb is sure to have the fuel injector you need. Whether it is for passenger car/automotive, light duty pick-up trucks, heavy duty, commercial, industrial, agricultural, or marine, Goldfarb has the stock replacement diesel fuel injectors to get your engine up and running once again.

Goldfarb offers injectors for applications that include Power Stroke, Cummins, Duramax, Ford, Chevrolet, GM, Dodge, BMW, Mercedes, Audi, Volkswagen, Hyundai, Kia, Detroit, Volvo, Mack, International, Navistar, Caterpillar, John Deere, Yanmar, Komatsu, and more. If your diesel engine is in need of replacement fuel injectors, Goldfarb will be able to help you identify the injector and locate a new or remanufactured stock replacement at an affordable price. Goldfarb never charges a core charge on injectors that are currently in stock. Have questions about used diesel engine partsLive chat with use in the bottom right hand part of your screen now.

Fuel Injection Pumps

Fuel injection pumps are an essential component of the fuel delivery system in most internal combustion engines. They ensure that a precise amount of fuel is delivered to each cylinder, providing optimum engine performance and efficiency.

Goldfarb & Associates has both new and used fuel injector pumps for sale. Let’s take a look at the benefits of rebuilt fuel injection pumps below, which may well strike the perfect balance for you between cost and performance.

Types of Fuel Injection Pumps

Fuel injector pumps are an essential part of any modern internal combustion engine. The type and design of the pump used depends on the application, but the three most common types are pump-line-nozzle, unit injector, and common rail.

The pump-line-nozzle system is a traditional method of fuel injection in which a single fuel injector is mounted to each cylinder head. This approach requires a separate high-pressure line from the fuel pump to each individual cylinder. High pressure generated by the fuel pump forces fuel through each nozzle at precisely timed intervals for optimum performance in both economy and power delivery.

A unit injector combines all the components required for injection (pump, lines, and nozzles) into one unit. This eliminates the need for high-pressure fuel lines running from the pump to each cylinder, making installation easier and cheaper. The downside of this system is that it requires more frequent maintenance than a pump-line-nozzle system due to all components being housed in one unit.

The most advanced fuel injection technology is known as common rail, which uses a single injector mounted centrally on the engine block with just one line connecting it directly to the main fuel rail. Pressure created by an electric or mechanical high-pressure pump sends fuel through this line, allowing precise control over delivery timing and duration. Common rail offers improved performance compared to other systems, but at a higher cost and complexity due to additional components such as actuators and sensors.

Pump-line-nozzle systems are the most basic but enable greater flexibility in terms of installation and maintenance costs, while unit injectors and common rail systems provide better performance but at a higher cost. Ultimately, the right type of fuel injector pump should be chosen based on each individual application.

Advantages of Using a Rebuilt Fuel Injection Pump

Rebuilt fuel injection pumps offer several advantages to vehicle owners who prefer not buy new or aftermarket units.

Rebuilt fuel injection pumps are rebuilt using original manufacturer parts. This means they can be customized to fit a particular make and model of vehicle perfectly. The parts used in these rebuilt pumps are designed for increased durability, giving drivers long-term reliability and peace of mind. It’s important to demand that the parts used in your rebuilt pump come from an OEM supplier; this way, their quality is guaranteed by the original equipment manufacturer. This ensures that all components meet exacting standards and specifications.

Another advantage of buying rebuilt fuel injection pumps is that they are significantly less expensive than their new or aftermarket counterparts. This allows owners to save on costs while still getting quality parts for their vehicle.

Used Fuel Injection Pumps FAQ

What is involved in the process of rebuilding a fuel injection pump?

Rebuilding an injector pump requires a few basic steps. First, the existing pump must be disassembled to reveal the internal components that are in need of repair or replacement. Depending on the model and severity of damage, certain parts may be easy to identify as needing attention while others may require further inspection under a magnifying glass. Injector pumps contain several small pieces that can easily become lost during disassembly, so it's important to take care not to let any items slip away.

Once all parts are accounted for and labeled, each component should be carefully cleaned with either warm, soapy water or solvent cleaner prior to reassembly. All seals should also be inspected for tears or other damage. If any of the seals are damaged, they should be replaced before reinstalling the pump.

Once all components are properly cleaned and inspected, it's time to begin reassembling the injector pump. Each seal is fitted into place before inserting and securing bolts in their designated spots. A torque wrench is used when bolting parts together as this ensures proper tightness without damaging components due to over-tightening or under-tightening. After everything is securely assembled, it's time for testing and adjustments. Typically, fuel injection pumps need to be tested at a qualified facility or repair shop with specialized equipment tailored for the specific make and model of vehicle.

Are used fuel injection pumps reliable?

This depends on the dealer. A responsible dealer has a reliable network of professionals that rigorously engage in the process described above and guarantee their work. At Goldfarb & Associates, we carefully check each piece we sell and guarantee our products. With proper care and maintenance, the used fuel injection pumps we have for sale will last for many years.

How long can a used fuel injection pump last?

This is difficult to answer since life expectancy largely depends on the maintenance and care it has received. Generally speaking, however, used pumps generally have a lifespan of about 200,000 miles. That said, there are other factors that can affect their longevity such as engine performance and whether or not the pump was subjected to frequent overheating due to inadequate cooling systems while previously in use.

How much can I expect to save when choosing a rebuilt fuel injection pump over a new one?

Rebuilt fuel injector pumps save you money.

What signs should I look for to determine if my fuel injection pump needs to be replaced?

If you have an older vehicle, or suspect that your fuel injection pump is failing, you should pay attention to certain signs.

  • Engine misfires or stalling—If your engine is running rough and intermittently misfiring or stalling, there may be a problem with the fuel injection pump.

  • Rough idling—A bad fuel injection pump can cause your engine to idle roughly, leading to increased vibrations and instability as you drive.

  • Poor acceleration—If you're noticing that your vehicle is not accelerating like it used to, this could be due to a faulty fuel injection pump which has reduced performance levels.

  • Black smoke from exhaust—Caused when the fuel injection pump is leaking too much diesel.

What factors can affect the performance of a fuel injection pump?

The performance of a fuel injection pump can be affected by several factors, including:

  • Contamination—Dirt or debris may have built up inside the pump over time, reducing its efficiency. This can also cause blockages and restrict the flow of fuel to the engine.

  • Wear and tear—Parts of the pump may be worn out or broken due to age and use, leading to an overall decrease in performance.

  • Fuel pressure—Incorrect fuel pressure can lead to improper atomization of the fuel, resulting in inefficient performance.

  • Lack of maintenance—Regular maintenance is key in order to ensure that the pump is functioning optimally. Neglecting regular checks and servicing will inevitably lead to decreased performance.

  • Fuel quality—Poor quality fuel can clog filters and hamper the performance of your fuel injection pump, leading to reduced output.

What oil should I use in an old fuel injection pump?

When it comes to choosing the right oil for your old fuel injection pump, you should select one that is specifically designed for high-pressure fuel systems. This type of oil has a much higher viscosity than ordinary engine oil and is specifically formulated to protect against wear and tear in modern, high-pressure fuel injection systems. Additionally, because older pumps are prone to leakage, it’s important to choose an oil with a strong sealant quality that can help prevent leaks from damaging other parts of the vehicle. It’s always best to consult your owner's manual or a qualified technician when selecting the ideal oil for your particular make and model of vehicle.

Are there any specific safety precautions that need to be taken when working with or servicing a used fuel injection pump?

Yes. It's important to ensure the area around the pump is properly ventilated and free of any combustible material. It's also important to make sure all parts of the fuel injection pump are stable and secure; this includes checking for cracks, wear, or corrosion in hoses, connectors, and seals. Additionally, it's essential to use only clean gasoline-rated tools when performing service on the pump.

When installing a new injector into an existing system, it is recommended to perform a pressure test of both the injector and fuel lines for leaks prior to connecting them. In addition, make sure to check for any blockages in the fuel lines and replace any damaged components that may cause a fire hazard.

Does the condition of the fuel lines have an impact on the performance of a used fuel injection pump?

Yes. Poorly maintained or corroded fuel lines can lead to insufficient flow or pressure of fuel to the fuel injectors, causing them to malfunction and reducing performance. In addition, clogged filters or restricted air intake due to debris inside the fuel line can further reduce performance.

It is important to keep your vehicle’s fuel system in good condition by regularly inspecting and maintaining every component. This includes checking for cracks, corrosion, clogs, and other damage in the fuel lines that can prevent proper functioning of the pump and reduce its efficiency.

Fuel Injection Pumps for Sale

When you’re in the market for rebuilt fuel injection pumps, reputation is everything. Goldfarb & Associates has been in the diesel injection industry for over twenty years, and we stand by our product. Our name means everything to us.

We have the used fuel injection pump you need, and please note that we do not charge a core charge on any of our current stock. If you need a specialty fuel injector, we are the ultimate source. Over our time in the industry, we’ve built a network of over 500 diesel injection remanufacturers, so we can find even the most obscure equipment with a very quick turnaround time.

Our rebuilt fuel injection pumps include brands such as Powerstroke, Cummins, Duramax, Ford, Chevrolet, GM, Dodge, BMW, Mercedes, Audi, Volkswagen, Hyundai, Kia, Detroit, Volvo, Mack, International, Navistar, Caterpillar, John Deere, Yanmar, Komatsu, and more.

There is no used fuel injection pump that we cannot locate. Rely on us to locate pumps for passenger car/automotive, light duty pick-up truck, heavy duty, commercial, industrial, agricultural, or marine uses—Goldfarb has you covered with the vast stock of fuel injection pumps we have for sale.

Most importantly, Goldfarb ensures that every rebuilt fuel injection pump we sell meets OEM standards. Don’t trust your equipment to anyone less than Goldfarb & Associates. We understand the challenges of the most advanced style diesel injectors and we conduct a thorough analysis of each piece of equipment we sell. Once we’ve found the right fit, we securely package your used fuel injection pump and ship it to you free.

Goldfarb & Associates is the industry expert in both new and rebuilt fuel injection pumps. We look forward to earning your business!


With over 20 years of experience in the diesel injection industry, Goldfarb & Associates has the experience necessary to help identify the fuel injectors that are right for you.

In building a network of over 500 diesel injection remanufacturers around the country and around the globe, Goldfarb & Associates can help locate even the most obscure and hard to find fuel injectors. In addition, Goldfarb has a very thorough evaluation of every fuel injector that arrives and leaves from the Rockville, Maryland headquarters. By visually and physically inspecting the injector bodies, nozzles, and fuel connections, Goldfarb ensures that each injector meets or exceeds OEM standards.

With the advancements in today’s more complicated fuel injectors that include more and more complex fuel delivery systems (common rail, piezo, etc.), Goldfarb understands the challenges of the newer style diesel injectors and will help diagnose and replace the necessary parts to get your engine running once again. Goldfarb also guarantees that each injector will be shipped free of charge in the United States and will be packaged and protected according to the highest of standards. 


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