There is no difference between the Astro and Raven I other than the mod for bladder tanks and then the hydraulics! The new Raven I's are coming out with 24V but will not effect the current Astro's and Raven I's. There should be no issue with the part numbers as the parts have only changed in quality and not shape/size to fitment area. Check out the Raven I parts manual and you will find the latest part number! Good luck.