OTC's replacement gauge for the OTC 4200 Nozlrater diesel injector nozzle tester is calibrated 0-5000 PSI (350 bar) and features a 3-1/ 2 inch dial face with easy to read black/red markings on a white background. Built in indicator needle records maximum pressure reached. Gauge connection - 1/4 inch Male NPT. Value is at the core of the OTC tool and equipment portfolio. Whether it's a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.