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Parts for Mercury Marine 1250 Crankshaft, Pistons & Connecting Rods

#1 436-3187A 2 CRANKSHAFT ASSEMBLY (NOT AS SHOWN) (1, required per assembly)
CRANKSHAFT        O - Replaced by 436-3187A 4
 

This part has been superseded.

436-3187A 2 - CRANKSHAFT O [ More info ]
Unavailable
Replaced by 436-3187A 4
CRANKSHAFT        O - Replaced by 436-4842A 3
 

This part has been superseded.

436-3187A 4 - CRANKSHAFT O [ More info ]
Unavailable
Replaced by 436-4842A 3
CRANKSHAFT        O - Replaced by 436-6646A 2
 

This part has been superseded.

436-4842A 3 - CRANKSHAFT O [ More info ]
Unavailable
Replaced by 436-6646A 2
CRANKSHAFT ASSEMB O - Replaced by 436-9072A 1
 

This part has been superseded.

436-6646A 2 - CRANKSHAFT ASSEMB O [ More info ]
Unavailable
Replaced by 436-9072A 1
CRANKSHAFT ASSEMB O NLA
 

About Mercury Marine

OEM Part

CRANKSHAFT ASSEMB O NLA [ More info ]
Unavailable
#1 436-3187A 4 CRANKSHAFT ASSEMBLY (NOT AS SHOWN) (,1 required per assembly)
#2 11-52901 NUT, FLYWHEEL TO CRANKSHAFT (,1 required per assembly)
NUT (.625-18) 11-52901
11-52901

About Mercury Marine

OEM Part

11-52901 - Nut [ More info ]

Add to shopping cart $9.50
10+ in stock. Explain stock levels

#3 30-32117 BEARING, BALL - UPPER (1,1 required per assembly)
BALL BEARING      O - Replaced by 30-62567
 

This part has been superseded.

30-32117 - BALL BEARING O [ More info ]
Unavailable
Replaced by 30-62567
BEARING Ball      O - Replaced by 30-62567T
30-62567

This part has been superseded.

30-62567 - BEARING Ball O [ More info ]
Unavailable
Replaced by 30-62567T
BALL BEARING 30-62567T
30-62567T

About Mercury Marine

OEM Part

30-62567T - Ball Bearing [ More info ]

Add to shopping cart $90.17
Available to order: Usually ships within 8 days. Explain stock levels

#4 30-20080 BEARING, BALL - LOWER (1,1 required per assembly) SERIAL 00000000-02709827
BALL BEARING      O - Replaced by 30-53853
 

This part has been superseded.

30-20080 - BALL BEARING O [ More info ]
Unavailable
Replaced by 30-53853
BALL BEARING      O - Replaced by 30-63742
 

This part has been superseded.

30-53853 - BALL BEARING O [ More info ]
Unavailable
Replaced by 30-63742
BEARING Ball      O - Replaced by 30-63742T
30-63742

This part has been superseded.

30-63742 - BEARING Ball O [ More info ]
Unavailable
Replaced by 30-63742T
BEARING Ball 30-63742T
30-63742T

About Mercury Marine

OEM Part

30-63742T - Ball Bearing [ More info ]

Add to shopping cart $29.00 $24.84
Available to order: Usually ships within 8 days. Explain stock levels

Ball Bearing
18-1154

About Sierra Marine

OEM Match

18-1154 - Bearing, 30-63742, 377139 [ More info ]

Add to shopping cart $25.99 $19.44
Available to order: Usually ships within 8 days. Explain stock levels

#4 30-53853 BEARING, BALL - LOWER (,1 required per assembly) SERIAL 02709828-09999999
#5 535-3190A 1 CENTER MAIN BEARING ASSEMBLY (2,2 required per assembly)
5353190A2    C/M BEARING 535-3190A 1
 

About Mercury Marine

OEM Part

535-3190A 1 - C/M Bearing [ More info ]

Add to shopping cart $125.00
10+ in stock. Explain stock levels

C/M BEARING,NLA 535-3190A 2
 

About Mercury Marine

OEM Part

535-3190A 2 - C/M Bearing, NLA [ More info ]

Add to shopping cart $125.00
1 in stock. Explain stock levels

#6 17-20032 DOWEL PIN, CENTER MAIN BEARING (4,4 required per assembly)
PIN Dowel 17-20032
 

About Mercury Marine

OEM Part

17-20032 - Pin -Dowel - Priced Individually [ More info ]

Add to shopping cart $3.00
10+ in stock. Explain stock levels

#7 29-48410 BEARING, NEEDLE - OUTER RACE (112,112 required per assembly)
NEEDLE BRG @200   O - Replaced by 29-52168
 

This part has been superseded.

29-48410 - NEEDLE BRG @200 O [ More info ]
Unavailable
Replaced by 29-52168
2971422 29-52168
29-52168

About Mercury Marine

OEM Part

29-52168 - Needle Bearing - Priced Individually [ More info ]

Add to shopping cart $0.30
10+ in stock. Explain stock levels

29714221   PRICED EACH"" 29-71422
29-71422

About Mercury Marine

OEM Part

29-71422 - Needle Bearing - Priced Individually [ More info ]

Add to shopping cart $0.35
10+ in stock. Explain stock levels

BEARING 29-71422  1
29-71422  1

About Mercury Marine

OEM Part

29-71422 1 - Needle Bearing - Priced Individually [ More info ]

Add to shopping cart $0.70 $0.42
10+ in stock. Explain stock levels

#8 26113 RACE, OUTER (PAIR) (2,2 required per assembly)
RACE              O - Replaced by -26113T
26113

This part has been superseded.

26113 - RACE O [ More info ]
Unavailable
Replaced by -26113T
RACE-CENTER MAIN 26113T
26113T

About Mercury Marine

OEM Part

26113T - Race - Center Main [ More info ]

Add to shopping cart $117.50
Available to order: Usually ships within 8 days. Explain stock levels

#9 53-26933 RING, SMAP - OUTER RACE (2,2 required per assembly)
RING-SNAP,NLA 53-26933
 

About Mercury Marine

OEM Part

53-26933 - Ring -snap, NLA [ More info ]

Add to shopping cart $3.00
10+ in stock. Explain stock levels

#10 17-47246 DOWEL PIN, STEPPED (2,2 required per assembly)
PIN,NLA 17-47246
 

About Mercury Marine

OEM Part

17-47246 - Pin, NLA [ More info ]

Add to shopping cart $15.00
3 in stock. Explain stock levels

#11 10-22968 SCREW, CENTER MAIN BEARING CLAMPING (4,4 required per assembly)
SCREW,NLA 10-22968
 

About Mercury Marine

OEM Part

10-22968 - Screw, NLA [ More info ]

Add to shopping cart $1.60
10+ in stock. Explain stock levels

#12 11-46887 NUT, BEARING CLAMPING SCREW (4,4 required per assembly)
NUT (1/4-28)      O - Replaced by 11-20184
 

This part has been superseded.

11-46887 - NUT (1/4-28) O [ More info ]
Unavailable
Replaced by 11-20184
NUT (1/4-28X7/32) 11-20184
11-20184

About Mercury Marine

OEM Part

11-20184 - Nut - Priced Individually [ More info ]

Add to shopping cart $1.30
2 in stock. Explain stock levels

#13 537-3300A 1 MAIN BEARING ASSEMBLY, VALVE TYPE (3,3 required per assembly)
MAIN BEARING      O - Replaced by 540-3943A 1
 

This part has been superseded.

537-3300A 1 - MAIN BEARING O [ More info ]
Unavailable
Replaced by 540-3943A 1
5407238A2 540-3943A 1
 

About Mercury Marine

OEM Part

540-3943A 1 - Main Bearing [ More info ]

Add to shopping cart $125.00
1 in stock. Explain stock levels

BEARING ASSEMBLY  O NLA
540-7238A 2

About Mercury Marine

OEM Part

BEARING ASSEMBLY O NLA [ More info ]
Unavailable
#15 10-45775 SCREW, MAIN BEARING CLAMPING (6,6 required per assembly)
SCREW,NLA 10-45775
 

About Mercury Marine

OEM Part

10-45775 - Screw, NLA [ More info ]

Add to shopping cart $3.00
10+ in stock. Explain stock levels

#16 11-45774 NUT, MAIN BEARING CLAMPING SCREW (6,6 required per assembly)
NUT 11-45774
 

About Mercury Marine

OEM Part

11-45774 - Nut - Priced Individually [ More info ]

Add to shopping cart $19.00
10+ in stock. Explain stock levels

#17 34-48082A 1 REED SET, MATCHED - MAIN BEARING (3,3 required per assembly)
REED ASSY         O - Replaced by 34-56007A 1
 

This part has been superseded.

34-48082A 1 - REED ASSY O [ More info ]
Unavailable
Replaced by 34-56007A 1
REED SET 34-56007A 1
34-56007A 1

About Mercury Marine

OEM Part

34-56007A 1 - Reed Kit [ More info ]

Add to shopping cart $80.58
10+ in stock. Explain stock levels

#18 34-48081 REED STOP, MAIN BEARING REED VALVES (12,12 required per assembly)
GASKET KIT        O - Replaced by 1395-879194024
 

This part has been superseded.

48081 - GASKET KIT O [ More info ]
Unavailable
Replaced by 1395-879194024
GASKET KIT 1395-879194024
1395-879194024

About Mercury Marine

OEM Part

1395-879194024 - Gasket Kit [ More info ]

Add to shopping cart $6.50
10+ in stock. Explain stock levels

Carb. Gasket Kit
18-7006-1

About Sierra Marine

OEM Match

18-7006-1 - Carburetor Kit, 1399-1717 & 2015 [ More info ]

Add to shopping cart $8.68 $7.04
10+ in stock. Explain stock levels

#19 10-48080 SCREW, REED STOP MOUNTING (36,36 required per assembly)
SCREW @2          O - Replaced by 10-20597
 

This part has been superseded.

10-48080 - SCREW @2 O [ More info ]
Unavailable
Replaced by 10-20597
SCREW (#8-32 x .380) 10-20597
10-20597

About Mercury Marine

OEM Part

10-20597 - Screw - Priced Individually [ More info ]

Add to shopping cart $0.70
10+ in stock. Explain stock levels

#20 472-3186A 4 PISTON AND PISTON PIN ASSEMBLY "G" TYPE LOCK RING (6, required per assembly) SEE DRAWING BELOW
PISTON            O - Replaced by 742-3512A 4
 

This part has been superseded.

742-3186A 4 - PISTON O [ More info ]
Unavailable
Replaced by 742-3512A 4
PISTON            O - Replaced by 742-3512A 2
 

This part has been superseded.

742-3512A 4 - PISTON O [ More info ]
Unavailable
Replaced by 742-3512A 2
PISTON ,NLA 742-3512A 2
742-3512A 2

About Mercury Marine

OEM Part

742-3512A 2 - Piston, NLA [ More info ]

Add to shopping cart $235.00
10+ in stock. Explain stock levels

#21 40-45740 LOCK RING, PISTON PIN G" TYPE LOCK RING (12, required per assembly) SEE DRAWING BELOW
LOCK RING,NLA 40-45740
 

About Mercury Marine

OEM Part

40-45740 - Lock Ring, NLA [ More info ]

Add to shopping cart $2.50
10+ in stock. Explain stock levels

#22 39-45155A12 RING, PISTON (1/16") G" TYPE LOCK RING (2, required per assembly) SEE DRAWING BELOW
PISTON RING ASSY  O - Replaced by 39-78816A12
 

This part has been superseded.

39-45155A12 - PISTON RING ASSY O [ More info ]
Unavailable
Replaced by 39-78816A12
RING SET-12 PCS 39-78816A12
39-78816A12

About Mercury Marine

OEM Part

39-78816A12 - Rings - 12 Pcs [ More info ]

Add to shopping cart $148.92
Available to order: Usually ships within 8 days. Explain stock levels

Piston Ring
18-3902

About Sierra Marine

OEM Match

18-3902 - Rings, 39-78816A12, 3 Rings Only [ More info ]

Add to shopping cart $35.99 $29.86
10+ in stock. Explain stock levels

#20 742-3512A 2 PISTON AND PISTON PIN ASSEMBLY "C" TYPE LOCK RING (6,6 required per assembly) SEE DRAWING BELOW
#21 40-52035 LOCK RING, PISTON PIN "C" TYPE LOCK RING (12,12 required per assembly) SEE DRAWING BELOW
53857196 40-52035
40-52035

About Mercury Marine

OEM Part

40-52035 - Lock Ring - Priced Individually [ More info ]

Add to shopping cart $1.25
10+ in stock. Explain stock levels

LOCK RING 53-857196
53-857196

About Mercury Marine

OEM Part

53-857196 - Lock Ring - Priced Individually [ More info ]

Add to shopping cart $2.40 $1.62
10+ in stock. Explain stock levels

Circlips (2/PKG)
18-4294

About Sierra Marine

OEM Match

18-4294-9 - Clips, PK2 [ More info ]

Add to shopping cart $4.98 $3.49
2 in stock. Explain stock levels

#23 618-3185A 2 CONNECKTING ROD AND CAP ASSEMBLY (6, required per assembly)
CONNECTING ROD    O - Replaced by 622-3666A 2
 

This part has been superseded.

618-3185A 2 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-3666A 2
CONNECTING ROD    O - Replaced by 622-3666A 5
 

This part has been superseded.

622-3666A 2 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-3666A 5
CONNECTING ROD    O - Replaced by 622-3666A 6
 

This part has been superseded.

622-3666A 5 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-3666A 6
CONNECTING ROD    O - Replaced by 622-3666A10
 

This part has been superseded.

622-3666A 6 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-3666A10
CONNECTING ROD    O - Replaced by 622-4850A 4
 

This part has been superseded.

622-3666A10 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-4850A 4
CONNECTING ROD    O - Replaced by 622-4850A 3
 

This part has been superseded.

622-4850A 4 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 622-4850A 3
CONNECTING ROD    O - Replaced by 624-8101A 3
 

This part has been superseded.

622-4850A 3 - CONNECTING ROD O [ More info ]
Unavailable
Replaced by 624-8101A 3
CONNECTING ROD,NLA 624-8101A 3
624-8101A 3

About Mercury Marine

OEM Part

624-8101A 3 - Connecting Rod, NLA [ More info ]

Add to shopping cart $140.00
10+ in stock. Explain stock levels

#23 622-3666A 2 CONNECTING ROD AND CAP ASSEMBLY (,6 required per assembly)
#24 31-47245A 1 BEARING ASSEMBLY, CRANKPIN (6,6 required per assembly)
ROLLER BEARING    O - Replaced by 31-55332A 1
 

This part has been superseded.

31-47245A 1 - ROLLER BEARING O [ More info ]
Unavailable
Replaced by 31-55332A 1
ROLLER BRG @6     O - Replaced by 31-58859A 1
 

This part has been superseded.

31-55332A 1 - ROLLER BRG @6 O [ More info ]
Unavailable
Replaced by 31-58859A 1
ROLLER BRG @6     O - Replaced by 31-61424A 2
 

This part has been superseded.

31-58859A 1 - ROLLER BRG @6 O [ More info ]
Unavailable
Replaced by 31-61424A 2
ROLLER BRG @6     O - Replaced by 31-63075A 1
 

This part has been superseded.

31-61424A 2 - ROLLER BRG @6 O [ More info ]
Unavailable
Replaced by 31-63075A 1
ROLLER BRG @6     O - Replaced by 31-62596A 1
 

This part has been superseded.

31-63075A 1 - ROLLER BRG @6 O [ More info ]
Unavailable
Replaced by 31-62596A 1
BEARING ASSEMBLY 31-62596A 1
31-62596A 1

About Mercury Marine

OEM Part

31-62596A 1 - Connecting Rod Bearings And Cage, Single [ More info ]

Add to shopping cart $153.50 $44.21
10+ in stock. Explain stock levels

Needle Bearing Set (W/O Cag
18-4038

About Sierra Marine

OEM Match

18-4038 - Needle Bearings, Without Cage, 31-62596A1 [ More info ]

Add to shopping cart $38.15 $30.88
6 in stock. Explain stock levels

#25 10-47240 SCREW, CONNECTING ROD (12,12 required per assembly)
SCREW @10         O - Replaced by 10-54803
 

This part has been superseded.

10-47240 - SCREW @10 O [ More info ]
Unavailable
Replaced by 10-54803
SCREW,NLA 10-54803
10-54803

About Mercury Marine

OEM Part

10-54803 - Screw, NLA [ More info ]

Add to shopping cart $4.00
10+ in stock. Explain stock levels

#26 11-49091 NUT, CONNECTING ROD SCREW (12,12 required per assembly)
NUT Note: must be ordered in multiples of 10 11-49091
11-49091

About Mercury Marine

OEM Part

11-49091 - Nut - Priced Individually [ More info ]

Add to shopping cart $2.20
9 in stock. Explain stock levels

#27 29-47270 BEARING NEEDLE - PISTON PIN (174,174 required per assembly)
BEARING 29-47270
29-47270

About Mercury Marine

OEM Part

29-47270 - Needle Bearing - Priced Individually [ More info ]

Add to shopping cart $0.22
10+ in stock. Explain stock levels

Needle Bearing
18-4036

About Sierra Marine

OEM Match

18-4036-9 - Bearing, 29-47270, 200PK [ More info ]

Add to shopping cart $38.00 $30.62
3 in stock. Explain stock levels

#28 12-47247 WASHER, NEEDLE LOCATING (12,12 required per assembly)
128M0032839 12-47247
 

About Mercury Marine

OEM Part

12-47247 - Washer - Priced Individually [ More info ]

Add to shopping cart $5.00
4 in stock. Explain stock levels

WASHER Note: must be ordered in multiples of 5 12-8M0032839
 

About Mercury Marine

OEM Part

12-8M0032839 - Washer - Priced Individually [ More info ]

Add to shopping cart $8.10
Available to order: Usually ships within 8 days. Explain stock levels