Parts Diagram | ## | Part # | Description | Qty | Notes |
![2011 25 - E25DRSIIS Cylinder Head & Thermostat parts diagram](http://www.selffixer.com/parts/outboard.motors/evinrude/images/sm.aa-models-15-e15hpslaab-parts-catalog.cylinder-head-thermostat-21.jpg) | 1 | 5008181 | Valve assembly, cooling pressure relief | 1 | |
2 | 0343245 | *screw, support | 1 | |
3 | 0353597 | *support, diaphragm | 1 | |
4 | 0353596 | *diaphragm | 1 | |
5 | 0353598 | *plate, housing | 1 | |
6 | 0355169 | *spring, valve | 1 | |
7 | 0353593 | *plunger, valve | 1 | |
8 | 0339543 | O-ring, plunger | 1 | |
9 | 0352773 | Seal, thermostat cover | 1 | |
10 | 0352768 | Cover, thermostat & pressure relief | 1 | |
11 | 0353590 | Screw, thermostat & pressure relief cover | 4 | |
12 | 0353197 | Gasket, cylinder head | 1 | |
13 | 0355133 | Cylinder head | 1 | |
ns | 0354923 | Pin, fuel deflecting. c, g, r, or s suffix models | 2 | |
ns | 0352881 | Pin, fuel deflecting. h suffix models | 2 | |
14 | 0339044 | Gasket, thermostat to cylinder head | 1 | |
15 | 5005440 | Thermostat assembly | 1 | |
16 | 0355209 | Spring, thermostat cover to thermostat | 1 | |
17 | 3010674 | Engine temperature sensor | 1 | |
18 | 5007419 | Spark plug qC10Wep | 2 | |
19 | 0353556 | Screw, cylinder head | 10 | |
20 | 0353735 | Washer, cylinder head screw | 10 | |