APPLICATION:   Tools set for Caterpillar 3406E, C-15 and C-16. ①And J-42083 Timing Pin can be used on C-7, C-9, C-11, C-13, C-15, C-16 3179, 3196, 3200, 3300 and 3400 (*Most Caterpillar Engine*). ②9U-7227 Injector Height Gauge for CAT 3406E, C-15 and C-16. ③Engine Barring Socket for CAT 3200/3406 Series C13/C15/C16 /3208/3400/3406e/3508/3512/3500.    MATERIAL:   Durable steel for Timing Pin and Engine Barring Socket. Aluminum Alloy construction with extreme anti-wear property for Injector Height Gauge Tool.    A MUST HAVE:   Alternative to Caterpillar J 42083, 9S9082 and 9U-7227.Injector height should be properly maintained if maximum performance and economy are to be obtained.    FUNCTION:   Great hand tool for turning over engine, Simplifies TDC valve/injection timing, makes adjusting injectors and valve lash easier. Accurately adjust the Injector Height of the engine.