A Legacy of Power
Performance, and Service

For over a century, energy, marine, and industrial operators have relied on
our industrial power equipment, parts, and expertise to keep them up and running.

OEM Partners

On-highway vehicle service and repair by Stewart & Stevenson

ON-HIGHWAY

Keeping vehicles moving with reliable engines, transmissions, and expert on-highway service support.

Industrial diesel and gas power generation systems

POWER GENERATION

Delivering dependable power generation equipment and service that performs under pressure and ensures uptime.

Natural gas microgrid power solutions

NATURAL GAS MICROGRIDS

Providing efficient, resilient energy solutions for commercial and remote applications.

Oil and gas equipment for energy operations

OIL & GAS

Powering operations even in harsh environments with durable, high-performance energy sector equipment.

Terex and industrial cranes

CRANES

Supporting safe, efficient lifting with reliable power and responsive service.

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Construction site and equipment solutions

CONSTRUCTION EQUIPMENT

Maximizing productivity through tough, dependable equipment and full service support.

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Power and pump, air compressor rental services

Power Rental

Offering flexible short- and long-term power and Power Rental.

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MANUFACTURING

Supporting diesel and gas generator manufacturing, containerized power generation, efrac and fracking manufacturing, all under one roof.

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Marine engine service

MARINE PROPULSION

Ensuring lasting vessel performance with durable engines and trusted technical support.

The Latest News & Updates

  • Day One SS Horizontal resized
    September 22, 2026|
    Now Hiring

    Day 1 at Stewart & Stevenson 🔧⚡ Crane lifts, a 3-megawatt generator built from the skid up and a training path that can take a technician from apprentice to an expert making $65+ an hour! Check out Day One at our sister company, UEM, to get a peek at a day with us, start to finish. 🎥

  • Square Post 1 resized
    September 22, 2026|
    Grid Resilience with mtu

    As power grids face unprecedented strain and demands soar, mission-critical facilities require an entirely new level of power resilience. ⚡️💻 Swipe through the carousel to dive deep into the 20V4000’s capabilities, including fast start times that protect mission-critical workloads, data centers, healthcare systems, and industrial facilities!

  • Square Post 2 resized
    September 22, 2026|
    We’re Your Allison Authorized Distributor

    Stewart & Stevenson has supported Allison Transmission for decades — and we keep genuine parts in stock at all our locations. Get fast access to parts built for your fleet with factory-trained support.

OEM industrial parts and engine components

Parts

With deep inventory, direct OEM sourcing, and streamlined logistics, Stewart & Stevenson provides the right component fast, so your operations stay up and running.

Diesel engine repair and service shop

Service

Our certified technicians are trained across multiple engine and power system platforms to diagnose, repair and maintain your equipment—and they’re available 24/7.

Industrial equipment rental and sales

Sales & Rental

We partner with leading engine and power system manufacturers to offer best-in-class solutions customized for your application, whether you’re looking to buy or rent.

Our Family of Industrial Power Equipment Companies

Stewart & Stevenson

Providing engines, power systems, and service across the U.S. and worldwide since 1902.

Delivering remanufactured engines, custom industrial power equipment, and parts across the South-Central U.S.

Authorized on and off-highway, marine, and power generation service and parts for Detroit Diesel and Allison customers across Florida.

Serving the Northeast with expert Detroit Diesel and Allison on and off-highway, marine, and power generation service, rebuilds, and parts.

Supporting transport refrigeration with Thermo King service, parts, and mobile maintenance across Texas and Colorado.

Transport Refrigeration Equipment
Transport Refrigeration Equipment
Transport Refrigeration Equipment
Transport Refrigeration Equipment
Transport Refrigeration Equipment

Stewart & Stevenson

Providing engines, power systems, and service across the U.S. and worldwide since 1902.

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Delivering remanufactured engines, custom industrial power equipment, and parts across the South-Central U.S.

Map of United Engines Industrial Power Equipment Company Cities v3

Authorized on and off-highway, marine, and power generation service and parts for Detroit Diesel and Allison customers across Florida.

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Serving the Northeast with expert Detroit Diesel and Allison on and off-highway, marine, and power generation service, rebuilds, and parts.

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Supporting transport refrigeration with Thermo King service, parts, and mobile maintenance across Texas and Colorado.

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Qualified Technicians

Equipment, Service, and Parts You Can Trust

Partner with a team that brings deep technical knowledge, responsive service, and trusted OEM relationships.