Welcome to the Truck Masters website. We specialize in the replacement of Truck gearboxes. Our gearboxes range from heavy to light duty brands. Heavy duty brands: Fuller, Eaton, ZF, Spicer, International, Volvo, Scania , Mercedes, Rockwell, Freightliner, Cummins etc. Light Duty brands: Mazda, Toyota, Isuzu, Nissan, Ford etc.