If you follow the pictures and directions, the removal and re-install is really straightforward. Plan on about 2-3 hours and don't forget to put in new Duck Valves as well. Overall if you are at all handy, this is one repair/maintenance item you can do yourself/
Sealand/Dometic 385311423 12 Volt Motor Conversion Kit.
This new SeaLand / Dometic design motor and bellows is a direct replacement and will fit all S-series and T-Series pumps.
Provides for 50% less noise during operation and a more efficient bellows design helps to prevent clogs.
The kit includes motor/gearbox, bellows, bellows clamps, o-ring kit, and motor mounting hardware.
Good product but there should be paperwork with the unit to tell you that it has been modified to a smaller diameter so there is less binding inside the pump during operation. I called tech support after reassembling the pump with old diaphragm to find this out. Fast delivery was a huge plus though.
on time, perfect
Worked for me