Mesozoic
Well-known member
I recently picked up an '09 1125CR. Water pump cover is leaking oil near the front and it's quite the task to replace the gasket. With a bit of internet research I discovered that there's a 2010 spec water pump cover that oil cools the water pump seal - apparently improving durability. Unfortunately, it does require a host of additional components that match the new water pump cover (or clutch cover assembly, as Buell parts catalog calls it out). In case anyone is considering this update themselves, here's a list of the part numbers needed, available through a couple of US HD dealerships, like Newcastle HD.
- 2010 spec clutch/water pump cover assembly (R0022A.3AM) - $219.49
- 2010 spec waterpump shaft assembly (Q0428.3AM) - $157.36
- 2010 spec clutch diaphragm thrust washer (CB0028.1AM) - $2.73
- 2010 spec waterpump oil seal (Q0430.3AM) - $8.08
- 2010 spec waterpump rotary seal (Q0431.3AM) - $26.41
- 2008-2010 spec clutch/water pump cover gasket (R0001.1AM) - $17.28
- 2008-2010 water pump gasket (Q0426.1AM) - $4.06
- Sealing ring (CJ0001.1AM) - $1.25