This dust seal is designed to fit perfectly with your Cummins Diesel Engine models NTA855, KTA19, KTA38, and KTA50. Made in China and manufactured with high-quality materials, these dust seals will help keep your engine clean and running smoothly. You can be sure to have enough to replace all the worn out or damaged dust seals in your engine. These seals are a crucial part of your engine's function and ensure that no dust or debris enters the engine, preventing unnecessary damage. Invest in these durable and reliable dust seals for your Cummins Diesel Engine today.