Allison Remanufactured transmission by Copeland International, Inc. Houston, Texas USA. This is a video of an Allison 4500RDS, HD4560, 4500OFS, HD4060, 4700OFS transmission being tested at our facility on our dyno. All Copeland transmissions are fully remanufactured, dyno tested with load and are backed by our stellar product support. Here you can see this transmission being tested under load. Typical applications for this model are oilfield service rigs, oilfield service pumps, heavy trucks, trash trucks, construction equipment & mining equipment.