This high-quality V-Idler from Stens is a perfect fit for your John Deere AM38171 lawn mower. It is made with durable materials and is designed to provide optimal performance for your mower. With this replacement part, you can ensure that your lawn mower continues to work efficiently without any issues. Whether you are a professional landscaper or a homeowner who takes pride in maintaining a beautiful lawn, this Stens V-Idler is a great investment. It is easy to install and will help to improve the performance of your lawn mower. So if you are looking for a reliable replacement part, look no further than the Stens 280-321 V-Idler.