This high-quality fuel supply tube fit is compatible with Cummins engines K19, K38, K50, QSK NT14, and NT855. It is designed to ensure optimal performance and reliability, and is made to last for heavy-duty applications. The tube fit is precision-engineered in China and is a perfect match for your Cummins engine, ensuring hassle-free performance. Whether you're in the heavy equipment industry or looking for a reliable fuel supply tube fit for your Cummins engine, this product is the perfect choice. It is compatible with a variety of Cummins engines and is made to last, ensuring that you can rely on it for years to come.