This O-ring seals is a perfect fit for Cummins engines KTA19, KTA38, and KTA50. These seals are designed to ensure proper sealing and prevent leaks in heavy equipment such as bulldozers, excavators, and loaders. The seals are made of high-quality materials that provide durability and reliability for long-term use. The O-ring seals are a must-have for anyone who operates heavy equipment or works in the heavy equipment industry. They are easy to install, and their superior sealing properties make them a great choice for preventing leakage. The seals are compatible with a wide range of machines, including those used in construction and mining.