Parts Catalog

Replacements
Home / Mercury / Mercury Marine [Updated: Apr. 10, 2026] / Outboard / 2 Stroke Carb / 40B (THRU PROP. EXHAUST) / [ML-676-B300101 THRU B302425] - Cat.# 90-84134 / CRANKCASE AND CYLINDER HEAD

CRANKCASE AND CYLINDER HEAD

Parts (50)

#Part NumberDescriptionQtyStatus
- 84133M POWERHEAD ASSEMBLY 1 superseded
- 84167M GASKET SET 1 superseded
1 6982M CRANKCASE ASSEMBLY 1 disc.
10 81807M WASHER 6 disc.
11 82000M HOSE 1 superseded
12 81999M HOSE 1 superseded
13 82046M CLAMP 4 disc.
14 83328M HOSE 1 disc.
15 82046M CLAMP 2 disc.
16 83329M FITTING DRAIN 2 disc.
17 81323M HOSE 1 disc.
18 82047M CLAMP 2 disc.
19 83330M ANODE 1 disc.
2 80727M   CHECK VALVE ASSEMBLY 1 disc.
20 82168M SCREW 1 disc.
21 83331M EYE ENGINE 1 superseded
22 82439M BOLT 2 disc.
23 82200M WASHER LOCK 2 superseded
24 6983M HEAD CYLINDER 1 disc.
25 83332M GASKET CYLINDER HEAD 1 superseded
26 82408M BOLT 11 disc.
27 80564M WASHER 11 disc.
28 83333M COVER CYLINDER HEAD [S-000940/L-300960/E-101340/EL-402625] & Below 1 disc.
29 83334M GASKET HEAD COVER 1 disc.
3 81258M   PIN DOWEL 2 disc.
30 83539M BOLT (M6 x 20) 11 superseded
31 82199M WASHER LOCK 11 superseded
32 81098M THERMOSTAT 1 superseded
33 83335M COVER THERMOSTAT 1 superseded
34 83336M GASKET THERMOSTAT 1 disc.
35 84237M BOLT 4 superseded
36 82199M WASHER LOCK 4 superseded
37 83337M INNER COVER EXHAUST 1 superseded
38 83338M GASKET EXHAUST COVER 2 superseded
39 83339M OUTER COVER EXHAUST 1 disc.
4 80122M   FITTING DRAIN 1 disc.
40 82405M BOLT 16 disc.
41 82199M WASHER 16 superseded
42 82372M SPARK PLUG (B-8HS) NGK 2 superseded
43 82067M GROMMET 1 disc.
44 81267M VALVE PRESSURE CONTROL 1 disc.
45 83340M SPRING 1 disc.
46 84953M COVER CYLINDER HEAD [S-000941/L-300961/E-101341/EL-402626] & Up 1 superseded
47 81926M PLUG [S-000941/L-300961/E-101341/EL-402626] & Up 1 disc.
48 81990M GASKET PLUG [S-000941/L-300961/E-101341/EL-402626] & Up 1 disc.
5 83326M FITTING WATER 1 disc.
6 82368M PIN DOWEL 2 disc.
7 82405M BOLT 9 disc.
8 81792M WASHER 9 disc.
9 83327M BOLT 6 disc.