Product Information This listing is for our rebuild and return service on an Allison 1000, 2000, 2400 Valve Body, 6-Speed, model years 2006-2009, with the addition of a 6-speed pipe. This valve body is better than OEM, it has upgrades for increased reliability over the stock OEM valve body. These upgrades include: Transgo SK Allison-Jr Kit, Oversized E-Shift Valve Kit 37000-15K, all solenoids are rebuilt, tested and replaced with new ones as needed.