The exact original one you have may no longer be made, unless someone upgraded it along the way.
This is a newer replacement for the traditional Shurflo pump used in many of the newer Sunlines. I bought and installed one of these earlier this year and was very satisfied it was as good and better then the prior models.
I also recommend you install an inlet strainer for it. It protects the pump from dirt etc that maye sneak into the fresh tank. Small particles of dirt etc. is an enemy to these water pumps. This is the one I used.
Hope this helps
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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