OTC (4201) Nozlrater Nozzle-Tester Adapter Set Universal adapter set for testing injection nozzles on the most popular automotive agricultural and construction diesel engines The set has 17 adapters that connect to the number 4200 Nozlrater testing unit Includes 23622 used on 198995 Cummins 5.9L, 198394 Ford 6.9L and 7.3L. Includes 23623 used on 19962000 Cummins 5.9L and Navistar 6.6L and 7.8L Includes handy metal storage box