When Does Your Diesel Engine Require a New Pump?

Your diesel engine relies on precise, high-pressure fuel delivery for power and efficiency. When the injection pump wears out, both performance and fuel economy decline.

Replace or inspect your fuel pump at Goldfarb & Associates if you notice:

• Rough Starts or Hesitation: The engine cranks longer than usual, misfires, or stumbles during acceleration.

• Excessive Exhaust Smoke: Thick, dark smoke at idle or throttle-up indicates poor fuel atomization or timing issues.

• Fuel Leakage: Wet spots, drips, or a strong diesel odor near the pump suggest worn seals or cracks.

• Unstable Idle: Engine RPM fluctuates, sputters, or stalls when idling.

• Dropping Fuel Pressure: Noticeable power loss under load or slow throttle response from restricted fuel delivery.

Promptly replacing or servicing the pump helps prevent further damage to fuel injectors, pistons, and turbo components, while restoring dependable engine performance.

Choose Your Fuel Pump: New, Rebuilt, or Used

Goldfarb & Associates carries three conditions, so you can choose based on your needs:

1. New Fuel Injection Pumps

Goldfarb & Associates offers new diesel injection pumps sourced from trusted manufacturers and distributors across the U.S. and worldwide. 

Straight from our partner manufacturers, each pump comes factory-tested for durability and precise fuel delivery, making it ideal for heavy-duty or long-term use. These units meet OEM specifications and are ready for quick installation.

2. Rebuilt Fuel Injection Pumps

Our rebuilt injection pumps are cleaned, fitted with new internals, and flow-tested to OEM standards by experienced remanufacturers. 

They deliver near-new performance at a more affordable price. Every rebuilt unit is carefully inspected and calibrated for consistent fuel metering and dependable operation.

3. Used Fuel Injection Pumps

Goldfarb & Associates also offers used fuel injection pumps that are inspected and function-tested to confirm performance, wear condition, and leak absence. 

They’re a cost-effective option for older or low-hour engines. Each listing accurately reflects the pump’s true condition, backed by our satisfaction guarantee.

Our specialists will recommend the best option based on your engine’s condition and intended use.

Which pump type lasts the longest?

New pumps generally last the longest, while rebuilt pumps provide similar durability when maintained properly.

Buy From Our Top Manufacturer Picks for 2025

We team up with established manufacturers to guarantee you receive durable, high-performing pumps:

• Bosch: A global leader in diesel technology, Bosch injection pumps are renowned for their precision engineering and exceptional fuel atomization, improving combustion efficiency and power output across a wide range of diesel engines.

• CAV: Known for rugged mechanical pump designs, CAV units are widely used in industrial, agricultural, and construction engines. Their durability and ease of maintenance make them ideal for heavy-duty, off-road applications.

• Delphi: Delphi’s injection pumps advanced electronic and mechanical fuel systems deliver cleaner combustion and optimized fuel delivery, helping engines run efficiently with reduced emissions. These systems are perfect for modern on-road and off-road diesel vehicles.

• Denso: A trusted name among OEM manufacturers, Denso pumps feature cutting-edge injection technology and superior material quality. These pumps are known for their reliability and consistent performance under high-pressure conditions.

• Lucas: The Lucas brand has a long legacy of reliable, high-torque fuel systems used in heavy-duty trucks and classic diesel engines. Their pumps are valued for strength, longevity, and compatibility with legacy engine models.

• Roosamaster: Designed for rotary and inline diesel systems, Roosamaster pumps are known for their consistent fuel delivery, simple serviceability, and long operational life, making them a dependable choice for many older diesel applications.

• Stanadyne: Stanadyne’s injection pump innovative high-pressure fuel delivery systems are built for precision and power. These pumps improve engine response, fuel efficiency, and noise, supporting performance and environmental goals.

• Zexel: A Japanese-engineered brand under the Bosch Group, Zexel fuel pumps are compact and efficient. They are ideal for modern light-duty and commercial diesel engines where space, precision, and emission control are priorities.

Each brand in our lineup is selected for its proven track record. When you choose a pump from Goldfarb & Associates, you’re backed by recognized quality.

Get Perfect Fitment & Compatibility Across Engines

Stop searching through endless catalogs. Goldfarb & Associates makes it simple to find a direct replacement for your engine. 

Here are just a few of the engines supported by our fuel pumps lineup:

• Ford Power Stroke (6.0L, 6.7L)
  

• Cummins (5.9L, 6.7L)
  

• Detroit Diesel (60 Series, DD15)
  

• International/Navistar (DT466, Maxxforce)
  

• John Deere (4045, 6068)
  

• Kubota (V2403, D902)
  

• Mack (E7, MP7)
  

• Mitsubishi (4M40, 4D56)
  

• Perkins (6.354.4, 4.236)
  

• Volvo Penta (TAMD63, TAD1641)

Our online filters let you select your engine model to view pumps that slip right into place with stock mounts and fittings.

Top Applications That Depend on Our Pumps

When peak fuel delivery is critical, rely on Goldfarb & Associates to supply the pump that keeps your machine moving:

• Light-Duty Trucks and Vans: Improve towing capability and fuel economy on pickups, delivery vans, and SUVs.

• Heavy-Duty Freight Rigs: Maintain steady power on long hauls across highways and mountainous terrain.

• Construction and Earthmoving Equipment: Provide consistent performance in excavators, loaders, and bulldozers under harsh conditions.

• Farm and Agriculture Machinery: Keep tractors, combines, and irrigation pumps running smoothly through planting and harvest.

• Marine and Boating Engines: Deliver a reliable fuel supply to ensure safe voyages and uninterrupted utility power.

• Industrial Backup Generators: Secure dependable operation for standby power in critical facilities.

• Performance and Motorsport Builds: Obtain razor-sharp throttle response and stable fueling at high RPMs for race and off-road rigs.

Order Your Fuel Injection Pump in Easy Steps

Getting the right pump is fast and straightforward with Goldfarb & Associates:

1. Search by Brand or Engine Model: Use our intuitive filters to narrow down pumps by manufacturer or engine code.
   

2. Review Specifications: Check for flow rates, pressure ratings, and mounting details on the product page.
   

3. Add to Cart and Select Shipping: Choose ground or expedited service. Orders over $50 qualify for free continental US shipping.
   

4. Complete a Secure Checkout: Pay with major credit cards or PayPal. You’ll receive order confirmation and tracking via email.

Why Choose Goldfarb & Associates

For over 20 years, Goldfarb & Associates has sourced reliable diesel parts from trusted suppliers across the globe.

• Nationwide Leader: Goldfarb & Associates is a trusted U.S. supplier of new, rebuilt, and used diesel parts, including injection pumps, injectors, and turbochargers. We source from reliable remanufacturers and distributors to deliver quality and consistency in every order.

• Trusted Brands: We carry genuine components from leading names such as Bosch, Denso, Delphi, Stanadyne, and Zexel. These brands are known for precision, durability, and reliable performance across all diesel applications.

• Quality Tested: Every pump we source is inspected and function-tested to ensure proper operation, fit, and performance. Each product listing clearly reflects its true condition for full transparency.

• Fair Pricing and Support: We offer competitive prices and expert guidance to help you find the right part for your engine. Our experienced team ensures quick responses and dependable service from inquiry to delivery.

Enjoy Fast, Free Shipping & Easy Returns

Order your fuel injection pump before 3:30 PM EST, Monday through Friday, and we’ll ship it the same day when in stock. 

Enjoy free shipping on all U.S. orders over $50 and quick international delivery options. If you need to return or exchange a part, our hassle-free process simplifies refunds and replacements.

Frequently Asked Questions

Can I install a pump myself?

Most pumps come with OEM mounts and fittings. If you’re comfortable with mechanical work, follow our installation guide. For complex applications, professional assistance may be recommended.

Are rebuilt pumps as reliable as new ones?

Our rebuilt pumps feature new internal components and are reconditioned to factory specs by our trusted suppliers and remanufacturers. They deliver performance almost identical to new units at a lower cost.

Do you ship internationally?

Yes. We work with trusted carriers to deliver injection pumps worldwide. International rates are calculated at checkout.

How fast is same-day shipping?

All orders placed Monday-Friday before 3:30 PM EST will be shipped the same day via UPS Ground, FedEx, or USPS as long as the product is not on back order.

Can I return a fuel injection pump if it doesn't fit or function properly?

Yes, we accept returns for pumps that are incompatible or malfunctioning. Please ensure the pump is in its original condition, and contact our customer service within the specified return period for assistance.

Does Goldfarb & Associates manufacture its own fuel injection pumps?

No. Goldfarb & Associates does not manufacture any parts. All pumps are sourced from trusted remanufacturers and suppliers across the U.S. and internationally. Each pump is inspected and tested to ensure it meets the quality standards described on our website.

Get Your Replacement Pump Before Stocks Run Out

Don’t let a worn or failing pump hold back your diesel’s performance. Restore power and reliability with a precision-tested fuel injection pump from Goldfarb & Associates.

Every unit is inspected for quality and backed by our satisfaction guarantee, so you can install with confidence and get back to work fast.

Order now to take advantage of same-day shipping on in-stock pumps and keep your diesel running at peak efficiency.