Parts Catalog

Replacements
Home / Mercury / Mercury Marine [Updated: Apr. 10, 2026] / Outboard / 4 Stroke EFI / 400R HP 5.7L V10 Racing / [3B272954 & Up] - Cat.# 90-8M0188524 / Cooling System

Cooling System

Parts (93)

#Part NumberDescriptionQtyStatus
- 8M0192183 FLUSH FITTING KIT 1
- 8M0203874 LONG BLOCK 1
- 8M0200003 GASKET SET Powerhead 1
1 8M0205186 THERMOSTAT ASSEMBLY 1 superseded
10 8M0192182   PLUG Flush Out 1
11 8M0152434   FITTING Quick Connect 1 superseded
12 848764   CLAMP (21 mm) 1
13 855228   CLAMP 2
14 NSS   NOT SOLD SEPARATE Valve-Flushing 1
15 NSS   NOT SOLD SEPARATE Hose 1
16 8M0192180   FITTING 1/2" to 5/8" 1
16 8M0192181   FITTING 5/8" to 5/8" 1
17 848764 CLAMP (21 mm) 3
18 8M0180032 CLIP Double Hose 1
19 816311T TIE STRAP (8.00 Inches) 10
2 NSS   NOT SOLD SEPARATE 60 Degree C 1
20 8M0203912 FITTING M10 x 1.5 2
21 8M0142523   O-RING (8.1 MM ID X 1.6MM) 2
22 888988011 CLAMP (38.1 MM) 4
23 8M0205190 FITTING 1
24 11165   O-RING 1
25 8M0205192 HOSE Sprayer 1
26 848763 CLAMP (19.8 mm) 2
27 899145 CLIP Tie Strap 2
28 8M0205193 HOSE Dump 1
29 8M0141781 CLAMP (44) 1
3 8M0177702   SPRING Thermostat 1
30 8M0205194 HOSE ASSEMBLY Water Exhaust Outlet 1
31 8M6001459   CLAMP (45.5) 1
32 NSS   NOT SOLD SEPARATE Hose Assembly- Exhaust to Head 1
33 8M0143696   CLAMP 2
34 NSS   NOT SOLD SEPARATE Hose-Water Inlet (Port) 1
35 NSS   NOT SOLD SEPARATE Hose-Water Inlet (Starboard) 1
36 8M0205198 CLIP Hose 1
37 8M0205199 HOSE ASSEMBLY Upper Closed Cooling Inlet 1
38 8M0205200 FITTING 1
39 8M0200181   O-RING 1.296 x .139 1
4 8M0177703   RETAINER Thermostat 1
40 8M0205201 GROMMET 1
41 8M0205202 HOSE Water Inlet 1
42 8M0207806 STRAINER ASSEMBLY Inline [3B524590] & Below 1
43 86614   O-RING (1.049 x .103) [3B524590] & Below 1
44 8M0224249 STRAINER ASSEMBLY Elbow [3B524591] & Up 1
45 8M0103805   SCREW (M6 x 16mm) Stainless Steel [3B524591] & Up 2
46 29439   O-RING [3B524591] & Up 1
47 86614   O-RING (1.049 x .103) [3B524591] & Up 1
48 8M0103806 SCREW (M6 x 20 MM) Stainless Steel [3B524591] & Up 1
49 8M0204696 CLAMP 3
5 8M0214923   O-RING (1.98 x 1.39) 1
50 8M0205203 HOSE Fuel Supply Module Inlet 1
51 8M0205204 HOSE Strainer to Fuel Supply Module [3B410482] & Below 1
51 8M0219997 HOSE Strainer to Fuel Supply Module [3B410483] & Up 1
52 888988019 CLAMP (22.6 mm) 1
53 8M0142654 HOSE Water Drain 1
54 884546   GROMMET 2
55 888523001 CLIP 1
56 8M0205205 FITTING 2
57 86614   O-RING (1.049 x .103) 2
58 8M0142501 GROMMET 1
59 8M0205206 FITTING 1
6 8M0205187 HOSE Crossover 1
60 8M0187145 CLAMP 2
61 8M0142518 HOSE ASSEMBLY Head Drain 1
62 884546   GROMMET 1
63 8M0205208 HOSE ASSEMBLY Block Drain (Port) 1
64 855228   CLAMP 2
65 8M0205209   VALVE Flushing 1
66 NSS   NOT SOLD SEPARATE Hose 1
67 8M0157397 CLAMP Oetiker, 17.5 1
68 8M0205210 CLIP 2 Hose 1
69 888988023 CLAMP 1
7 8M0143696 CLAMP 2
70 8M0142830 SCREW (M6 x 20) 2
70 8M0142830 SCREW (M6 x 20) [3B410482] & Below 1
71 8M0205211 FITTING 1
72 38101   O-RING (.674 x .103) 1
73 8M0205212 CLIP Hose 1
74 8M0205213 HOSE ASSEMBLY Cooler Out 1
75 8M0205214 FITTING 1
76 8M0204650   O-RING 1
77 8M0205215 THERMOSTAT 1 superseded
78 887978   GASKET 1
79 8M0215070 BRACKET Poppet Assembly [3B410482] & Below 1
8 8M0103806 SCREW (M6 x 20 MM) Stainless Steel 11
80 8M0205216 CLIP Flush Hose [3B410482] & Below 1
81 43430 WASHER [3B410482] & Below 3
82 8M0103807 SCREW (M6 x 25 mm) Stainless Steel [3B410482] & Below 1
83 8M0103805 SCREW (M6 x 16mm) Stainless Steel [3B410482] & Below 2
84 8M0215069 POPPET ASSEMBLY Lower Closed Cooling Inlet [3B410482] & Below 1 disc.
85 8M0205217 HOSE ASSEMBLY Lower Closed Cooling Inlet [3B410483] & Up 1
86 8M0205218 FITTING 1
87 8M0214923   O-RING (1.98 x 1.39) 1
9 8M0205188 HOSE ASSEMBLY Engine Flush 1