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Crankshaft, Pistons & Flywheel for Mercury (Merc 25) Engine

Engine Diagram

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

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

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

258-859232T 6 - Flywheel [ More info ]
Unavailable
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 — 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 — 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 — 87575 — RING GEAR, FLYWHEEL (1 required per assembly) — ELECTRIC UNITED STATES 6055407 AND BELOW AUSTRALIA 8074217 AND BELOW BELGIUM 9340565 AND BELOW CANADA 7186767 AND BELOW
43-87575 - RING GEAR          - Replaced by 43-99301
 

43-87575 - Ring Gear [ More info ]
Unavailable
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 — 99301 — RING GEAR, FLYWHEEL (1 required per assembly) — ELECTRIC UNITED STATES 6055408 AND UP BELGIUM 9340566 AND UP CANADA 7186768 AND UP
#5 — 40039106 — SCREW, RING GEAR TO FLYWHEEL (4 required per assembly) — -ELECTRIC
10-40039106 - SCREW (M5 x 13)    - Replaced by 10-88190313
 

10-40039106 - Screw [ More info ]
Unavailable
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 — 8586A 2 — CRANKSHAFT ASSEMBLY (1 required per assembly)
464-8586A 2 - CRANKSHAFT ASSEMB  - Replaced by 464-8978A 2
 

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

464-8978A 2 - Crankshaft [ More info ]
Unavailable
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
1 In Stock.

#8 — 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
1 In Stock.

OIL SEAL
18-0537

About Sierra Marine

OEM Match

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

Add to shopping cart $16.52
2 In Stock.

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

31-85113 - Roller Bearing - Crankshaft - Lower [ More info ]
Unavailable
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 — 85114 — ROLLER BEARING, CRANKSHAFT - UPPER (1 required per assembly)
31-85114 - BEARING Roller -   - Replaced by 31-85114T
31-85114

31-85114 - Roller Bearing - Crankshaft - Upper [ More info ]
Unavailable
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 — 85974 — OIL SEAL, CRANKSHAFT - UPPER (1 required per assembly)
26-85974 - SEAL Oil           - Replaced by 26-859741
 

26-85974 - Oil Seal [ More info ]
Unavailable
26-859741 - SEAL
26-859741

About Mercury Marine

OEM Part

26-85974 1 - Seal [ More info ]
Unavailable
#12 — 86992A 2 — BEARING ASSEMBLY, CENTER MAIN (1 required per assembly)
86992A 2 - BEARING ASSEMBLY   - Replaced by -86992A 3
 

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

86992A 3 - CENTER MAIN BEAR [ More info ]
Unavailable
86992A 5 - BEARING ASSEMBLY   NLA
86992A 5

About Mercury Marine

OEM Part

86992A 5 - Bearing - Center/Main [ More info ]
Unavailable
#13 — 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 — 8511A 3 — PISTON AND PIN ASSEMBLY (2 required per assembly)
767-8511A 3 - PISTON ASSEMBLY    - Replaced by 767-9104A 3
 

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

About Mercury Marine

OEM Part

767-9104A 3 - Piston & Pin Assembly - 872- 9533T2 [ More info ]
Unavailable
#15 — 47276 — LOCK RING, PISTON PIN (4 required per assembly)
40-47276 - LOCK RING          - Replaced by 40-828119
40-47276

40-47276 - Lock Ring - Priced Individually [ More info ]
Unavailable
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 — 96525A12 — PISTON RING ASSEMBLY (1 required per assembly)
39-96525A12 - RING SET Piston    - Replaced by 39-12810A12
 

39-96525A12 - Piston Ring ASSY [ More info ]
Unavailable
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 — 8329A 2 — CONNECTING ROD ASSEMBLY (2 required per assembly) — UNITED STATES 6241936 AND BELOW BELGIUM 9369470 AND BELOW CANADA 7201892 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 — 20063 — NEEDLE BEARING, PISTON END (54 required per assembly) — UNITED STATES 6241936 AND BELOW BELGIUM 9369470 AND BELOW CANADA 7201892 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 — 85175 — WASHER, LOCATING - NEEDLE BEARING (4 required per assembly) — UNITED STATES 6241936 AND BELOW BELGIUM 9369470 AND BELOW CANADA 7201892 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 — 91866A 1 — ROLLER BEARING ASSEMBLY (2 required per assembly) — UNITED STATES 6241936 AND BELOW BELGIUM 9369470 AND BELOW CANADA 7201892 AND BELOW
31-91866A 1 - BEARING ASSEMBLY   - Replaced by 31-41620A 1
 

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

31-41620A 1 - Roller Bearing [ More info ]
Unavailable
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 — 86224 — SCREW, CONNECTING ROD (25MM) (4 required per assembly) — UNITED STATES 6241936 AND BELOW BELGIUM 9369470 AND BELOW CANADA7201892 AND BELOW
10-86224 - SCREW              - Replaced by 10-4008225
 

10-86224 - SCREW Note: Priced Individually [ More info ]
Unavailable
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 — 8329A 3 — CONNECTING ROD ASSEMBLY (2 required per assembly) — UNITED STATES 6241937 AND UP BELGIUM 9369471 AND UP CANADA 7201893 AND UP
630-8329A 3 - CONNECTING ROD AS  - Replaced by 630-8835A 2
 

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

630-8835A 2 - Connecting Rod Assembly [ More info ]
Unavailable
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 — 98295 — NEEDLE BEARING, PISTON END (54 required per assembly) — UNITED STATES 6241937 AND UP BELGIUM 9369471 AND UP CANADA 7201893 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 — 98296 — WASHER, LOCATING - NEEDLE BEARING (4 required per assembly) — UNITED STATES 6241937 AND UP BELGIUM 9369471 AND UP CANADA 7201893 AND UP
12-98296 - WASHER             - Replaced by -42025
 

12-98296 - Thrust Bearing [ More info ]
Unavailable
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 — 40082 25 — SCREW,CONNECTING ROD (25MM) (4 required per assembly) — UNITED STATES 6241937 AND UP BELGIUM 9369471 AND UP CANADA 7201893 AND UP

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