Distribution and Services
Kirby Corporation, through its wholly owned subsidiaries United Holdings LLC, Stewart & Stevenson LLC, and Kirby Engine Systems LLC (including Marine Systems, Inc. and Engine Systems, Inc.), is a leading distributor and services provider to industrial markets including oilfield services, marine, power generation, on-highway, and other industrial applications. Each of the Kirby brands sell genuine OEM equipment and replacement parts and provide service mechanics to overhaul and rebuild engines, transmissions, and related equipment. Customers are served through a network of 62 branch locations across 17 states and Colombia, South America. In the oil and gas markets, Kirby also manufactures and remanufactures oilfield service equipment, including pressure pumping units, and manufactures power generation equipment, specialized electrical distribution and control equipment, and high capacity energy storage/battery systems. Kirby also rents generators, lift trucks, refrigerated trailers, and industrial and portable compressed air to all the markets that the Company serves and sells genuine replacement parts via DieselDash.com (Diesel Dash LLC).
To learn more about our brands, click on their logos below.
Kirby Brands
Kirby OEM Partners













Distribution & Services Officers
Kirby Distribution & Services, Inc.
Christian G. O’Neil
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Donald J. Hume
Vice President, Finance
Steven K. Derrick
Vice President, HSE
Kirby Engine Systems, Inc.
Dorman Lynn Strahan
President
Engine Systems, Inc
P. Scott Mangan
Vice President – East Coast
Marine Systems, Inc.
Thomas W. Bottoms
Vice President – Midwest
United Engines LLC
Christian G. O’Neil
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Billy J. Bryant
Vice President, Divisional Sales Power Generation
Chad Lemoine
Vice President, Divisional Sales Off Highway Products
UE Manufacturing LLC
Christian G. O’Neil
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Brent M. Finley
Vice President
Engineered Products, Manufacturing
Thermo King of Houston, LP
Jason K. Robison
Vice President
Thermo King of Dallas, LP
David Knowlton
Vice President
James Marino
Vice President
Stewart & Stevenson LLC
Christian G. O’Neil
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Donald J. Hume
Vice President, Finance
Stewart & Stevenson Power Products LLC
Donald F. Mann
President – ADDA & FDDA
Senior Vice President – Rental Operations
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Donald J. Hume
Vice President, Finance
Billy J. Bryant
Vice President, Divisional Sales Power Generation
Chad Lemoine
Vice President, Divisional Sales Off Highway Products
Stewart & Stevenson Manufacturing Technologies LLC
Christian G. O’Neil
President
Nathan E. Carrell
Executive Vice President, Operations
Chad T. Joost
Executive Vice President, Business Product Development and Sales
Brent M. Finley
Vice President
Engineered Products, Manufacturing
Stewart & Stevenson de las Americas Colombia, Ltda
John Rivera
General Manager