Parts Diagram | ## | Part # | Description | Qty | Notes |
| 1 | 0338741 | Cover, mount bracket lower | 2 | |
2 | 0908668 | Screw, cover | 8 | |
3 | 0341451 | Exhaust housing, outer. 20 in. 508MM transom models only | 1 | |
3 | 0435318 | Exhaust housing, outer. 25 in. 635MM transom models only | 1 | |
3 | 0337549 | Exhaust housing, 20 in, 90/115 jet | 1 | |
4 | 0328698 | Screw, exhaust housing | 6 | |
5 | 0301250 | Washer, exhaust housing | 8 | |
6 | 0390131 | Cover, rear | 1 | |
7 | 0318258 | Seal, cover | 1 | |
8 | 0328694 | Screw, cover s | 4 | |
9 | 0323403 | Water tube. 20 in. 508MM transom models only | 1 | |
9 | 0323404 | Water tube. 25 in. 635MM transom models only | 1 | |
10 | 0305145 | Grommet, water tube | 1 | |
11 | 0331039 | Adapter, exhaust housing | 1 | |
12 | 0302860 | Screw | 2 | |
13 | 0321692 | Grommet | 2 | |
14 | 0332369 | Gasket | 2 | |
15 | 0302290 | Lock washer | 10 | |
16 | 0306418 | Screw, inner to outer housing | 5 | |
17 | 0306409 | Screw, adapter to housing, outer | 2 | |
18 | 0321727 | Gasket, adapter to powerhead | 1 | |
19 | 0395755 | Rubber mount assembly, upper | 1 | |
20 | 0330930 | Screw, upper mount | 1 | |
21 | 0323800 | Cover, exhaust housing, front | 1 | |
22 | 0327796 | Exhaust housing, inner lower. 20 in. 508MM transom models only | 1 | |
22 | 0327797 | Exhaust housing, inner lower. 25 in. 635MM transom models only | 1 | |
23 | 0329556 | Exhaust housing, inner | 1 | |
24 | 0320936 | Seal, exhaust housing | 1 | |
25 | 0306422 | Nut, powerhead to adapter | 2 | |
26 | 0305652 | Screw, thermostat housing | 3 | |
27 | 0318395 | Valve, relief | 2 | |
28 | 0330931 | Screw, mount | 2 | |
29 | 0393659 | Thermostat | 2 | |
30 | 0320961 | Seal, gear case to inner housing | 1 | |
31 | 0303398 | Screw | 3 | |
32 | 0321693 | Valve body | 1 | |
33 | 0321932 | Gasket, thermostat | 2 | |
34 | 0317245 | Spring, pressure relief | 2 | |
35 | 0331022 | Plate, upper mount | 1 | |
37 | 0321690 | Cover, thermostat | 1 | |
38 | 0301250 | Lock washer | 2 | |
39 | 0583967 | Lead assembly, ground | 1 | |
40 | 0323459 | Gasket | 1 | |
41 | 0320936 | Seal, exhaust housing | 1 | |
42 | 0434631 | Mount assembly, lower | 2 | |
43 | 0337908 | Plug, shift rod hole, 90/115 jet models | 1 | |