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Cummins

Cummins specializes in diesel and alternative fuel engines and generators, and related components and technology.

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View Cummins Inventory

About Cummins

Cummins leads the world in power solutions, driving industries and infrastructure for more than 100 years. Founded in 1919 in Columbus, Indiana, Cummins continues to innovate across diesel, natural gas, hybrid, and electric powertrains. The company engineers its engines for cleaner, smarter performance that supports transportation, construction, agriculture, and more around the globe.

Mid-Range Diesel Engines

Cummins mid-range engines deliver the versatility and reliability required in today’s medium-duty applications. These engines are commonly found in platforms like the Mack MD Series, Hino trucks, Isuzu NPR, and Autocar chassis. Designed for regional hauling, urban delivery, and municipal fleets, Cummins mid-range solutions strike a balance between fuel efficiency and power.

Heavy-Duty Diesel Engines

Cummins heavy-duty engines power some of the most demanding trucks on the road, including Class 8 models from Volvo and Mack. Known for robust torque, long service intervals, and fuel efficiency, these engines support long-haul, vocational, and off-highway applications with confidence.

CNG and Natural Gas Engines

For fleets transitioning to alternative fuels, Cummins natural gas engines provide a clean, lower-emissions solution without compromising performance. A selection of TEC Equipment locations are equipped and certified to service Cummins CNG and natural gas engines, helping customers meet emissions standards and sustainability goals.

Cummins Parts & Components

Owning a Cummins-powered truck means investing in proven reliability. With Genuine Cummins Parts, you gain consistent quality, factory warranty coverage, and nationwide support. These components reduce downtime, lower operational costs, and improve long-term engine health.

Authorized Cummins Support

As an authorized Cummins partner, TEC Equipment offers certified service, diagnostics, and parts support in many of our dealership locations. Whether you're maintaining a fleet or managing a single rig, our factory-trained teams provide the expertise and turnaround times you need to keep moving.

Frequently Asked Questions (FAQ)

Which semi-trucks use Cummins engines?

Cummins engines are available in a wide range of medium- and heavy-duty trucks from brands like Mack, Hino, Isuzu, Autocar, and select Volvo models. TEC Equipment offers Cummins-powered trucks across urban delivery, vocational, and long-haul Class 8 applications.

What are the specs of Cummins semi-truck engines?

Cummins engines offer horsepower ranging from 200 to 605 hp and torque ratings up to 2,050 lb-ft, depending on the model and configuration. The X15 and L9 are widely used in regional and long-haul fleets for their balance of performance and fuel economy.

What is the difference between the Cummins X15 and ISX15?

The X15 is Cummins’ evolution of the ISX15, designed with improved thermal efficiency, reduced emissions, and enhanced uptime. While both offer similar displacement (15L), the X15 provides better integration with digital diagnostics, making it the preferred option for modern fleets While keeping up with the evolving emissions standards.

What’s better: a 12-valve or 24-valve Cummins engine?

For commercial fleets, 24-valve Cummins engines (like the ISB and later B6.7) offer more precise fuel injection, improved power output, and better emissions control compared to older 12-valve models. While 12-valve engines are simpler and easier to work on, 24-valve systems are more efficient and compliant with current regulations.

What are some of the best Cummins engines for commercial use?

Top-performing Cummins models include the X15 for heavy-duty long-haul, the L9 for regional delivery and vocational work, and the B6.7 for medium-duty platforms. Each engine is optimized for reliability, fuel economy, and low maintenance costs. TEC Equipment supports sales and certified service for all Cummins platforms.

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