This wiring harness is designed to fit Cummins engines K19, K38, K50, QSK, NT14, and NT855. It is a high-quality wire harness that is perfect for any car or truck. The OE/OEM part number and manufacturer part number for this wire harness are both 3063683. This wire harness is a must-have for anyone who is looking to upgrade their car or truck's wiring system. It is compatible with a wide range of vehicles and is made from durable materials that will last for years to come. Whether you are a professional mechanic or a DIY enthusiast, this wire harness is the perfect choice for your needs.