This injector fuel supply tube is a must-have for Cummins diesel engine owners. It is designed to fit perfectly and ensure smooth engine operation. Made in China, this unit is of high-quality and durable construction, ready to withstand the rigors of daily use. With a manufacturer part number of 3924421, this fuel supply tube is ideal for those looking to make replacements or upgrades to their engine. The unit quantity is one, making it easy to purchase and install. Whether you are an experienced mechanic or a novice, this injector fuel supply tube is a reliable choice for optimal engine performance.