Serving the diesel fuel injection market since 1984

What we do

Diesel Fuel Injection Parts, Test Equipment, Tools, and Adapters

U.S. Diesel, Inc. is a leader in aftermarket diesel fuel injection parts, test equipment, tools, and adapters for diesel fuel injection repair facilities around the world.  Since 1984, our focus has remained steadfast in serving the needs of the diesel fuel injection industry with an emphasis on quality products, customer service, and cost savings.

Our brands

What We Offer


Aftermarket replacement parts for the leading diesel fuel injection systems such as Bosch, Stanadyne, Delphi, Denso, CAV, Ambac, Zexel, Cummins, and Caterpillar.  We’re an authorized distributor for SPACO, a premier manufacturer of aftermarket replacements parts for diesel fuel injection pumps and injectors.  Pump gaskets, service kits, nozzles, elements, solenoid valves, metering valves, liners, diaphragms, and lever springs are just some of the parts in our extensive product offering of replacement parts for all types of diesel fuel injection pumps and injectors.  Quality parts at a discount to OEM pricing is why our customers have trusted us as their partner for diesel fuel injection parts for over 30 years. 


As an authorized distributor for MAKTEST, we offer a complete line of aftermarket diesel fuel injection test equipment. MAKTEST is a leading manufacturer of Common Rail, EUI/EUP, HEUI, and Mechanical test equipment for pumps and injectors from all makes. Diesel fuel injection repair shops around the world have trusted the MAKTEST brand name for decades for all their test equipment requirements. 

Tools & Adapters

Aftermarket tools and adapters for diesel fuel injection test equipment and diesel fuel injection repairs.


Used fuel injection test equipment and tools from all makes to provide a solution for any budget.

why choose us

We Know Diesel Fuel Injection

  • 35+ years in business
  • 50+ years of combined experience in diesel fuel injection
  • Aftermarket and OEM brands
  • Best Value
  • Member of the Association of Diesel Specialists

Diesel Fuel Injection Test Equipment Specialists

Are you considering upgrading your equipment?  Are you looking to expand your testing capabilities to better serve your customers?  Do you want to learn more about how we can help provide a turnkey project solution for your business?  Are you a new shop looking to make your first equipment purchase?  No matter the scenario, USDIESEL is here to support you with all your diesel fuel injection test equipment requirements.  We offer Common Rail, EUI/EUP, HEUI, and Mechanical fuel injection test equipment.  Give us a call or send us an email and let’s start a conversation on how we can best serve you.

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