◇Application: Adjust tools set for Caterpillar 3406E, C-15 and C-16. 9U-7227 Injector Height Tool works for Caterpillar 3406E, C-15,C-16. Works for Caterpillar 3406E, C-15, C-16 Use Instruction 9S-9082 Engine Barring Socket for Caterpillar(CAT) engines 3200/3406 series C13/C15/C16/3208/3400/3406E.