This wiring harness is designed to fit Cummins engines with QSB6.7. It is made by a reputable manufacturer with part numbers 4988598 and 5367725. The harness is compatible with OE/OEM part number 4988598 and is ideal for use in cars and trucks. The harness is perfect for those looking for a replacement or for those who need to upgrade their existing wiring harness. It is easy to install and comes with all the necessary components.