Norgren GT Development Corporation
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GT Development Corporation

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The following is a list of GT’s major customers. We’ve provided a link to our customers’ home page where applicable. For a comprehensive directory of companies in the Class 8 vehicle, systems, and components markets, go to or

Truck OEMs

Freightliner Corporation, Portland, OR
Kenworth Truck Company, Kirkland, WA         
Mack Trucks, Allentown, PA                 
Navistar International, Chicago, IL                      
Peterbilt Motors, Denton, TX                 
Sterling, Willoughby, OH                                    
Volvo Truck North America, Greensboro, NC   
Western Star Trucks, Portland, OR                    

Air Brake System OEMs

Bendix Commercial Vehicle Systems, Elyria, OH
Haldex Brake Products Corp, Kansas City, MO 
Meritor WABCO Automotive, Troy, MI            

Air Seat OEMs

Bostrom Seating, Piedmont, AL                          
National Seating, Vonore, TN                 
Sears Manufacturing Company, Davenport, IA   
Seats Incorporated, Reedsburg, WI                    

Fuel Tank OEMs

Fuel Systems LLC, Grand Rapids, MI                
Imperial Group, Portland, TN                 

Cooling System OEMs

Horton Industries, Minneapolis, MN                   
Borg Warner Emissions/Thermal Sys., Marshall, MI

Wiper Control OEMs

Sprague Devices, Michigan City, MI       

Aftermarket Parts Distributors - OEM

Freightliner Parts, Portland, OR
International Parts, Chicago, IL
Mack Parts, Allentown, PA
PACCAR Parts, Renton, WA
Volvo Parts, Greensboro, NC

Aftermarket Parts Distributors - Independent

Sloan Transportation, Holland, MI                      
Velvac, Inc., New Berlin, WI