The product is a set of four fuel injectors designed to fit Cummins B3.3 and QSB3.3 diesel engines, serving as replacements for part number 4089877. The mounting style is bolt-on, with a male connector type and silver connector color. The manufacturer part number is C4089877, and the item includes O-ring and seal for installation. Made in China, these fuel injectors have a weight of 8 oz and are not considered a performance part. The product is not a vintage part and does not have universal fitment. Please note that it may contain chemicals known to the State of California to cause cancer and reproductive harm. Exact item set is shown. New with partial original packaging. Made in China. No returns on installed items or partial sets. This item is a new, opened customer return. It has been inspected and passed quality control to insure the condition described and contents are accurate. Please review actual photos as stock photos are not the actual item, our photos are. Please review our business policies in our store for information regarding returns, shipping and warranties. Please review all photos to make certain these match the ones on your engine. No returns at all if they are exposed to fuel.