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Parts for Mercury Marine 18 HP Crankshaft, Pistons & Flywheel

#1 258-8274A 6 FLYWHEEL ASSEMBLY (1 required per assembly)
258-8274A 6 - FLYWHEEL ASSEMBLY  - Replaced by 258-818354A 2
258-8274A 6

This part has been superseded.

258-8274A 6 - 258-8274A 6 - FLYWHEEL ASSEMBLY [ More info ]
Unavailable
Replaced by 258-818354A 2
258-818354A 2 - FLYWHEEL           - Replaced by 258-859232T 6
258-818354A 2

This part has been superseded.

258-818354A 2 - 258-818354A 2 - FLYWHEEL [ More info ]
Unavailable
Replaced by 258-859232T 6
258-859232T 6 - FLYWHEEL           - Replaced by 258-859232T15
258-859232T 6

This part has been superseded.

258-859232T 6 - 258-859232T 6 - FLYWHEEL [ More info ]
Unavailable
Replaced by 258-859232T15
FLYWHEEL ASSY 258-859232T15
258-859232T15

About Mercury Marine

OEM Part

258-859232T15 - Flywheel Assembly [ More info ]

Add to shopping cart $566.00
Available to Order: Usually ships within 10 days.

#2 10-97359A 1 SCREW, FLYWHEEL TO CRANKSHAFT (1 required per assembly)
SCREW,NLA 10-97359A 1
 

About Mercury Marine

OEM Part

10-97359A 1 - Screw, NLA [ More info ]

Add to shopping cart $9.99
10+ In Stock.

#3 12-86496 WASHER, FLYWHEEL SCREW (1 required per assembly)
WASHER 12-86496
 

About Mercury Marine

OEM Part

12-86496 - Washer, Flywheel Screw [ More info ]

Add to shopping cart $3.80
Available to Order: Usually ships within 10 days.

#4 43-87575 RING GEAR, FLYWHEEL (1 required per assembly) ELECTRIC UNITED STATES 6043400 AND BELOW AUSTRALIA 8073792 AND BELOW BELGIUM 9340115 AND BELOW CANADA 7185897 AND BELOW
43-87575 - RING GEAR          - Replaced by 43-99301
 

This part has been superseded.

43-87575 - 43-87575 - RING GEAR [ More info ]
Unavailable
Replaced by 43-99301
GEAR-RING 43-99301
43-99301

About Mercury Marine

OEM Part

43-99301 - Ring Gear [ More info ]

Add to shopping cart $326.75
Available to Order: Usually ships within 10 days.

#4 43-99301 RING GEAR, FLYWHEEL (1 required per assembly) ELECTRIC UNITED STATES 6043401 AND UP BELGIUM 9340116 AND UP CANADA 7185898 AND UP
#5 10-40039106 SCREW, RING GEAR TO FLYWHEEL (4 required per assembly) ELECTRIC
10-40039106 - SCREW (M5 x 13)    - Replaced by 10-88190313
 

This part has been superseded.

10-40039106 - 10-40039106 - SCREW (M5 x 13) [ More info ]
Unavailable
Replaced by 10-88190313
SCREW (M5 x 13) 10-88190313
10-88190313

About Mercury Marine

OEM Part

10-881903 13 - Screw [ More info ]

Add to shopping cart $1.70
Available to Order: Usually ships within 10 days.

#6 464-8586A 2 CRANKSHAFT ASSEMBLY (1 required per assembly)
464-8586A 2 - CRANKSHAFT ASSEMB  - Replaced by 464-8978A 2
 

This part has been superseded.

464-8586A 2 - 464-8586A 2 - CRANKSHAFT ASSEMB [ More info ]
Unavailable
Replaced by 464-8978A 2
464-8978A 2 - CRANKSHAFT ASSEMB  - Replaced by 464-8978T 2
 

This part has been superseded.

464-8978A 2 - 464-8978A 2 - CRANKSHAFT ASSEMB [ More info ]
Unavailable
Replaced by 464-8978T 2
CRANKSHAFT 464-8978T 2
464-8978T 2

About Mercury Marine

OEM Part

464-8978T 2 - CrankShaft [ More info ]

Add to shopping cart $199.99
10+ In Stock.

#7 85981 SEAL, CRANKSHAFT (1 required per assembly)
SEAL ,NLA 85981
 

About Mercury Marine

OEM Part

85981 - Crankshaft Seal, NLA [ More info ]

Add to shopping cart $12.65
2 In Stock.

#8 26-85107 OIL SEAL CRANKSHAFT-LOWER (1 required per assembly)
SEAL Oil 26-85107
26-85107

About Mercury Marine

OEM Part

26-85107 - Seal [ More info ]

Add to shopping cart $19.30
2 In Stock.

OIL SEAL
18-0537

About Sierra Marine

OEM Match

18-0537 - Seal, 26-85107 [ More info ]

Add to shopping cart $17.04
2 In Stock.

#9 31-85113 ROLLER BEARING, CRANKSHAFT - LOWER (1 required per assembly)
31-85113 - BEARING Roller     - Replaced by 31-85113T
31-85113

This part has been superseded.

31-85113 - 31-85113 - BEARING Roller [ More info ]
Unavailable
Replaced by 31-85113T
BEARING Roller - Lower 31-85113T
31-85113T

About Mercury Marine

OEM Part

31-85113T - Bearing - Roller - Lower [ More info ]

Add to shopping cart $26.58
Available to Order: Usually ships within 10 days.

#10 31-85114 ROLLER BEARING, CRANKSHAFT - UPPER (1 required per assembly)
31-85114 - BEARING Roller -   - Replaced by 31-85114T
31-85114

This part has been superseded.

31-85114 - 31-85114 - BEARING Roller - [ More info ]
Unavailable
Replaced by 31-85114T
BEARING Roller - Upper 31-85114T
31-85114T

About Mercury Marine

OEM Part

31-85114T - Bearing - Roller - Upper [ More info ]

Add to shopping cart $29.33
Available to Order: Usually ships within 10 days.

#11 26-85974 OIL SEAL, CRANKSHAFT - UPPER (1 required per assembly)
26-85974 - SEAL Oil           - Replaced by 26-859741
 

This part has been superseded.

26-85974 - 26-85974 - SEAL Oil [ More info ]
Unavailable
Replaced by 26-859741
26-859741 - SEAL
26-859741

About Mercury Marine

OEM Part

26-859741 - SEAL [ More info ]
Unavailable
#12 86992A 2 BEARING ASSEMBLY, CENTER MAIN (1 required per assembly)
86992A 2 - BEARING ASSEMBLY   - Replaced by -86992A 3
 

This part has been superseded.

86992A 2 - 86992A 2 - BEARING ASSEMBLY [ More info ]
Unavailable
Replaced by -86992A 3
86992A 3 - BEARING ASSEMBLY   - Replaced by -86992A 5
 

This part has been superseded.

86992A 3 - 86992A 3 - BEARING ASSEMBLY [ More info ]
Unavailable
Replaced by -86992A 5
BEARING ASSEMBLY,NLA 86992A 5
86992A 5

About Mercury Marine

OEM Part

86992A 5 - Bearing - Center/Main [ More info ]

Add to shopping cart $90.00
1 In Stock.

#13 28-20094 KEY, FLYWHEEL DRIVE (1 required per assembly)
KEY 28-20094
28-20094

About Mercury Marine

OEM Part

28-20094 - Key - Priced Individually [ More info ]

Add to shopping cart $1.70
10+ In Stock.

#14 767-8511A 3 PISTON AND PIN ASSEMBLY (2 required per assembly)
767-8511A 3 - PISTON ASSEMBLY    - Replaced by 767-9104A 3
 

This part has been superseded.

767-8511A 3 - 767-8511A 3 - PISTON ASSEMBLY [ More info ]
Unavailable
Replaced by 767-9104A 3
767-9104A 3 - PISTON ASSEMBLY    NLA
767-9104A 3

About Mercury Marine

OEM Part

767-9104A 3 - PISTON ASSEMBLY NLA [ More info ]
Unavailable
#15 40-47276 LOCK RING, PISTON PIN (4 required per assembly)
40-47276 - LOCK RING          - Replaced by 40-828119
40-47276

This part has been superseded.

40-47276 - 40-47276 - LOCK RING [ More info ]
Unavailable
Replaced by 40-828119
RING-LOCK 40-828119
40-828119

About Mercury Marine

OEM Part

40-828119 - Lock Ring [ More info ]

Add to shopping cart $3.10
Available to Order: Usually ships within 10 days.

#16 39-96525A12 PISTON RING ASSEMBLY (1 required per assembly)
39-96525A12 - RING SET Piston    - Replaced by 39-12810A12
 

This part has been superseded.

39-96525A12 - 39-96525A12 - RING SET Piston [ More info ]
Unavailable
Replaced by 39-12810A12
398M0083677 39-12810A12
39-12810A12

About Mercury Marine

OEM Part

39-12810A12 - Piston Rings 12 Pcs. [ More info ]

Add to shopping cart $95.99
10+ In Stock.

398M0096518 39-8M0083677
 

About Mercury Marine

OEM Part

398M0083677 - ORD 39-8M0096518 [ More info ]

Add to shopping cart $116.00
5 In Stock.

#17 630-8329A 2 CONNECTING ROD ASSEMBLY (2 required per assembly) UNITED STATES 6239752 AND BELOW BELGIUM 9378115 AND BELOW CANADA 7200762 AND BELOW
CONNECTING ROD,NLA 630-8329A 2
 

About Mercury Marine

OEM Part

630-8329A 2 - Connecting Rod, NLA [ More info ]

Add to shopping cart $59.00
2 In Stock.

#18 29-20063 NEEDLE BEARING, PISTON END (54 required per assembly) UNITED STATES 6239752 AND BELOW BELGIUM 9378115 AND BELOW CANADA 7200762 AND BELOW
BRG-NEEDLE 29-20063
29-20063

About Mercury Marine

OEM Part

29-20063 - Needle Bearing [ More info ]

Add to shopping cart $0.60 $0.43
10+ In Stock.

#19 12-85175 WASHER, LOCATING - NEEDLE BEARING (4 required per assembly) UNITED STATES 6239752 AND BELOW BELGIUM 9378115 AND BELOW CANADA 7200762 AND BELOW
WASHER,NLA 12-85175
 

About Mercury Marine

OEM Part

12-85175 - Washer, Locating - Needle Bearing, NLA [ More info ]

Add to shopping cart $1.80
10+ In Stock.

#20 31-91866A 1 ROLLER BEARING ASSEMBLY (2 required per assembly) UNITED STATES 6239752 AND BELOW BELGIUM 9378115 AND BELOW CANADA 7200762 AND BELOW
31-91866A 1 - BEARING ASSEMBLY   - Replaced by 31-41620A 1
 

This part has been superseded.

31-91866A 1 - 31-91866A 1 - BEARING ASSEMBLY [ More info ]
Unavailable
Replaced by 31-41620A 1
31-41620A 1 - BEARING ASSEMBLY   - Replaced by 31-879877A 1
31-41620A 1

This part has been superseded.

31-41620A 1 - 31-41620A 1 - BEARING ASSEMBLY [ More info ]
Unavailable
Replaced by 31-879877A 1
BEARING CAGE ASSY 31-879877A 1
31-879877A 1

About Mercury Marine

OEM Part

31-879877A 1 - Bearing - Roller [ More info ]

Add to shopping cart $42.75
3 In Stock.

#21 10-86224 SCREW, CONNECTING ROD (25MM) (4 required per assembly) UNITED STATES 6239752 AND BELOW BELGIUM 9378115 AND BELOW CANADA 7200762 AND BELOW
10-86224 - SCREW              - Replaced by 10-4008225
 

This part has been superseded.

10-86224 - 10-86224 - SCREW [ More info ]
Unavailable
Replaced by 10-4008225
SCREW,NLA 10-4008225
 

About Mercury Marine

OEM Part

10-40082 25 - Screw, NLA [ More info ]

Add to shopping cart $1.83
10+ In Stock.

#17 630-8329A 3 CONNECTING ROD ASSEMBLY (2 required per assembly) UNITED STATES 6239753 AND UP BELGIUM 9378116 AND UP CANADA 7200763 AND UP
630-8329A 3 - CONNECTING ROD AS  - Replaced by 630-8835A 2
 

This part has been superseded.

630-8329A 3 - 630-8329A 3 - CONNECTING ROD AS [ More info ]
Unavailable
Replaced by 630-8835A 2
630-8835A 2 - CONNECTING ROD AS  - Replaced by 630-8835A 4
 

This part has been superseded.

630-8835A 2 - 630-8835A 2 - CONNECTING ROD AS [ More info ]
Unavailable
Replaced by 630-8835A 4
CONNECTING ROD ASSEMBLY 630-8835A 4
 

About Mercury Marine

OEM Part

630-8835A 4 - Connecting Rod [ More info ]

Add to shopping cart $297.83 $253.16
2 In Stock.

#18 29-98295 NEEDLE BEARING, PISTON END (54 required per assembly) UNITED STATES 6239753 AND UP BELGIUM 9378116 AND UP CANADA 7200763 AND UP
BRG-NEEDLE 29-98295
29-98295

About Mercury Marine

OEM Part

29-98295 - Needle Bearing [ More info ]

Add to shopping cart $0.40 $0.08
10+ In Stock.

#19 12-98296 WASHER, LOCATING - NEEDLE BEARING (4 required per assembly) UNITED STATES 6239753 AND UP BELGIUM 9378116 AND UP CANADA 7200763 AND UP
12-98296 - WASHER             - Replaced by -42025
 

This part has been superseded.

12-98296 - 12-98296 - WASHER [ More info ]
Unavailable
Replaced by -42025
42025 - BEARING            - Replaced by 12-8M0012294
 

42025 - Thrust Bearing [ More info ]
Unavailable
WASHER-THRUST 12-8M0012294
 

About Mercury Marine

OEM Part

12-8M0012294 - Thrust Washer [ More info ]

Add to shopping cart $5.90
2 In Stock.

#21 10-40082 25 SCREW, CONNECTING ROD (25MM) (4 required per assembly) UNITED STATES 6239753 AND UP BELGIUM 9378116 AND UP CANADA 7200763 AND UP
#22 27-85168A80 GASKET SET
27-85168A80 - GASKET SET         NLA
27-85168A80

About Mercury Marine

OEM Part

27-85168A80 - GASKET SET NLA [ More info ]
Unavailable

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