Salvage, good used retainer. Part number 5172734. This cam and balance shaft nut retainer is designed for use with Detroit Diesel Series 71 92 engines. It is compatible with a variety of equipment types and makes, and is made from high-quality materials for reliable performance. With this cam and balance shaft nut retainer, you can ensure that your Detroit Diesel engine is running smoothly and efficiently. It is a must-have for anyone who relies on their equipment for heavy-duty applications. Purchase with confidence, knowing that you are getting a top-quality part that will keep your engine running at peak performance. Free shipping!