Profile: Johnson & Towers, Inc. sells and services diesel engines, transmissions & related components, parts & accessories, for equipment serving various on-highway & off-highway markets. Those markets include medium- and heavy-duty trucks, buses & coaches, fire & emergency vehicles, power generation systems, marine propulsion & support equipment (commercial & pleasure-craft), construction & industrial equipment. Our core services include preventive maintenance & service contracts, diagnostic service, vehicle inspection/smoke testing and warranty service.