Located near Rochester, NY, McQuillen Engines Inc., is a family owned and operated automotive machine shop and advanced manufacturing facility. McQuillen Engines Inc. can provide full service high performance engine machining and building, heavy duty diesel engine rebuilding, and antique engine restorations. 

McQuillen Engines Inc. also provides OEM manufactures with advanced research testing components and testing facilities, Unigraphics NX design and engineering services, and complex manufacturing. 

McQuillen Engines Inc. utilizes the latest and most precise equipment, combined with a highly skilled and experienced workforce. 80% of our employees have been with us for more than 15 years.