The N34-1(3823451 3375522 3824942) Injection Timing Tool is a universal fit for Cummins engines including N855, N14, M11, L10, K19, K38, and K50 models. Engineered with precision, this tool allows accurate injection timing adjustment. Made from high-quality materials, it ensures durability and reliable performance. Upgrade your engine maintenance with this indispensable tool.