This set of fuel injectors is a great choice for those who need to replace their old or damaged ones. The injectors are designed for direct replacement in 01-07 GM Chevy, GMC Cadillac 4.8L, 5.3L, and 6.0L engines. They come in a set of 8 with 4 holes each, and are made by Parts Plus, a trusted brand in the industry. The injectors have a pressure of 28 LBS and are meant for the front placement on the vehicle. They are compatible with other part numbers such as 4G1659, M881, and 17113553, and have a manufacturer part number of FJ315. Please note that these injectors are not for 12594512 and 12580681 models. Purchase according to the original OE number.