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Parts for Mercury Mark & Kiekhaefer Mark 50, 50E Cylinder Block & Crankcase Assembly (Intake Side)

#1 800-8A 2 CYLINDER BLOCK & CRANKSHAFT ASSEMBLY (1,1 required per assembly)
800-8A 2 - CYLINDER BLOCK    O - Replaced by 808-1321A 5
 

This part has been superseded.

800-8A 2 - 800-8A 2 - CYLINDER BLOCK O [ More info ]
Unavailable
Replaced by 808-1321A 5
808-1321A 5 - CYLINDER BLOCK    O NLA
 

About Mercury Marine

OEM Part

808-1321A 5 - CYLINDER BLOCK O NLA [ More info ]
Unavailable
#- N.S.S. BLOCK CYLINDER (1,1 required per assembly)
N.S.S. - Not Sold Separate O
 

About Mercury Marine

OEM Part

N.S.S. - Not Sold Separate O [ More info ]
Unavailable
#- 20065 INSERT , HELI-COIL (4,4 required per assembly)
91-20065 - INSERT 210-324    O - Replaced by 91-45831
 

This part has been superseded.

91-20065 - 91-20065 - INSERT 210-324 O [ More info ]
Unavailable
Replaced by 91-45831
INSERT,NLA 91-45831
 

About Mercury Marine

OEM Part

91-45831 - Insert, NLA [ More info ]

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

#2 16-20984 STUD ,CYLINDER BLOCK TO CRANKSHAFT (1,1 required per assembly)
16-20984 - STUD @2           O NLA
 

About Mercury Marine

OEM Part

16-20984 - STUD @2 O NLA [ More info ]
Unavailable
#3 16-20985 STUD , CYLINDER BLOCK TO CRANKSHAFT (2,2 required per assembly)
16-20985 - STUD              O - Replaced by 16-66288
 

This part has been superseded.

16-20985 - 16-20985 - STUD O [ More info ]
Unavailable
Replaced by 16-66288
16-66288 - STUD @2           O - Replaced by 16-69058
 

This part has been superseded.

16-66288 - 16-66288 - STUD @2 O [ More info ]
Unavailable
Replaced by 16-69058
168M0034449 16-69058
 

About Mercury Marine

OEM Part

16-69058 - Stud [ More info ]

Add to shopping cart $8.10
5 in stock. Explain stock levels

STUD (.312 x 1.69) 16-8M0034449
 

About Mercury Marine

OEM Part

16-8M0034449 - Stud [ More info ]

Add to shopping cart $8.60
Available to order: Usually ships within 8 days. Explain stock levels

#4 16-20352 STUD , CYLINDER BLOCK CRANKSHAFT (6,6 required per assembly)
16-20352 - MERC PERF PROD    O NLA
 

About Mercury Marine

OEM Part

16-20352 - MERC PERF PROD O NLA [ More info ]
Unavailable
#5 16-20484 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
16-20484 - MERC PERF PROD    O NLA
 

About Mercury Marine

OEM Part

16-20484 - MERC PERF PROD O NLA [ More info ]
Unavailable
#6 16-20074 STUD , CYLINDER BLOCK CRANKSHAFT (8,8 required per assembly)
16-20074 - STUD              O NLA
 

About Mercury Marine

OEM Part

16-20074 - STUD O NLA [ More info ]
Unavailable
#7 16-20355 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
16-20355 - STUD              O NLA
 

About Mercury Marine

OEM Part

16-20355 - STUD O NLA [ More info ]
Unavailable
#8 16-20354 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
16-20354 - STUD              O NLA
 

About Mercury Marine

OEM Part

16-20354 - STUD O NLA [ More info ]
Unavailable
#9 16-20983 STUD , CYLINDER BLOCK CRANKSHAFT (1,1 required per assembly)
16-20983 - STUD @2           O - Replaced by 16-65761
 

This part has been superseded.

16-20983 - 16-20983 - STUD @2 O [ More info ]
Unavailable
Replaced by 16-65761
16-65761 - STUD @2           O - Replaced by 16-68167
 

This part has been superseded.

16-65761 - 16-65761 - STUD @2 O [ More info ]
Unavailable
Replaced by 16-68167
STUD (.312-18/.312-24 x 16-68167
 

About Mercury Marine

OEM Part

16-68167 - Stud [ More info ]

Add to shopping cart $19.10 $16.36
Available to order: Usually ships within 8 days. Explain stock levels

#10 16-20357 STUD , CYLINDER BLOCK TO DRIVE SHAFT HOUSING (6,6 required per assembly)
16-20357 - STUD              O - Replaced by 16-29989
 

This part has been superseded.

16-20357 - 16-20357 - STUD O [ More info ]
Unavailable
Replaced by 16-29989
STUD,NLA 16-29989
 

About Mercury Marine

OEM Part

16-29989 - Stud, NLA [ More info ]

Add to shopping cart $6.00
10+ in stock. Explain stock levels

#-- 16-20351 STUD , CYLINDER BLOCK TO UPPER END CAP (2,2 required per assembly)
16-20351 - STUD              O - Replaced by 16-35099
 

This part has been superseded.

16-20351 - 16-20351 - STUD O [ More info ]
Unavailable
Replaced by 16-35099
16-35099 - STUD @3           O - Replaced by 16-64280
 

This part has been superseded.

16-35099 - 16-35099 - STUD @3 O [ More info ]
Unavailable
Replaced by 16-64280
16-64280 - STUD              O - Replaced by 16-68164
 

This part has been superseded.

16-64280 - 16-64280 - STUD O [ More info ]
Unavailable
Replaced by 16-68164
16-68164 - STUD              O - Replaced by 16-64936
 

This part has been superseded.

16-68164 - 16-68164 - STUD O [ More info ]
Unavailable
Replaced by 16-64936
STUD,NLA 16-64936
 

About Mercury Marine

OEM Part

16-64936 - Stud, NLA [ More info ]

Add to shopping cart $5.00
10+ in stock. Explain stock levels

#11 16-20078 STUD , CYLINDER BLOCK TO LOWER END CAP (1,1 required per assembly)
16-20078 - STUD              O - Replaced by 16-53579
 

This part has been superseded.

16-20078 - 16-20078 - STUD O [ More info ]
Unavailable
Replaced by 16-53579
16-53579 - STUD @2           O - Replaced by 16-63332
 

This part has been superseded.

16-53579 - 16-53579 - STUD @2 O [ More info ]
Unavailable
Replaced by 16-63332
STUD (.312 x 1.2812) 16-63332
 

About Mercury Marine

OEM Part

16-63332 - Stud [ More info ]

Add to shopping cart $3.70
10+ in stock. Explain stock levels

#-- 23-20528 BUSHING ASSEM,BLY , CRANKCASE (2,2 required per assembly)
23-20528 - BUSHING           O - Replaced by 23-26348
 

This part has been superseded.

23-20528 - 23-20528 - BUSHING O [ More info ]
Unavailable
Replaced by 23-26348
BUSHING      ,NLA 23-26348
 

About Mercury Marine

OEM Part

23-26348 - Bushing , NLA [ More info ]

Add to shopping cart $16.50
10+ in stock. Explain stock levels

#13 12-20086 WASHER , (16-20354) (2,2 required per assembly)
WASHER (.390 x .620 x . 12-20086
 

About Mercury Marine

OEM Part

12-20086 - Washer - Priced Individually [ More info ]

Add to shopping cart $1.20
10+ in stock. Explain stock levels

#14 11-20087 NUT (16-203254 STUD) (2,2 required per assembly)
11-20087 - NUT @5            O NLA
 

About Mercury Marine

OEM Part

11-20087 - NUT @5 O NLA [ More info ]
Unavailable
#15 17-20033 DOWEL PIN , CYLINDER BLOCK TO CRANKCASE (2,2 required per assembly)
1743044 17-20033
 

About Mercury Marine

OEM Part

17-20033 - Pin -Dowel - Priced Individually [ More info ]

Add to shopping cart $1.15
10+ in stock. Explain stock levels

PIN Dowel - Without Hol 17-43044
 

About Mercury Marine

OEM Part

17-43044 - Pin -Dowel-solid [ More info ]

Add to shopping cart $1.70
10+ in stock. Explain stock levels

#16 17-20323 DOWEL PIN , CYLINDER BLOCK TO CENTER MAIN BRG. (1,1 required per assembly)
PIN Dowel 17-20323
 

About Mercury Marine

OEM Part

17-20323 - Pin -Dowel - Priced Individually [ More info ]

Add to shopping cart $3.00 $2.03
10+ in stock. Explain stock levels

#17 20029 COVER , TRANSFR PORT (4,4 required per assembly)
COVER,NLA 20029
 

About Mercury Marine

OEM Part

20029 - Transfer Port Cover, NLA [ More info ]

Add to shopping cart $4.50
10+ in stock. Explain stock levels

#18 27-20030 GASKET , TRANSFER PORT COVER (4,4 required per assembly)
Gasket,NLA 27-20030
 

About Mercury Marine

OEM Part

27-20030 - Gasket [ More info ]

Add to shopping cart $7.50
10+ in stock. Explain stock levels

#19 10-21185 SCREW , TRANSFER PORT COVER MOUNTING (6,6 required per assembly)
10-21185 - SCREW             O - Replaced by 10-24222
 

This part has been superseded.

10-21185 - 10-21185 - SCREW O [ More info ]
Unavailable
Replaced by 10-24222
10-24222 - SCREW             O - Replaced by 10-28713
 

This part has been superseded.

10-24222 - 10-24222 - SCREW O [ More info ]
Unavailable
Replaced by 10-28713
SCREW,NLA 10-28713
 

About Mercury Marine

OEM Part

10-28713 - Screw, NLA [ More info ]

Add to shopping cart $3.75
10+ in stock. Explain stock levels

#-- 10-20540 SCREW , TRANSFER PORT COVER MOUNTING (2,2 required per assembly)
SCREW,NLA 10-20540
 

About Mercury Marine

OEM Part

10-20540 - Screw, NLA [ More info ]

Add to shopping cart $1.50
10+ in stock. Explain stock levels

#20 12-20028 WASHER , TRANSFER PORT COVER SCREW (8,8 required per assembly)
WASHER (.265 x .437 x . 12-20028
 

About Mercury Marine

OEM Part

12-20028 - Washer - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ in stock. Explain stock levels

#-- 13-20924 LOCKWASHER , TRANSFER PORT COVER SCREW (2,2 required per assembly)
13-20924 - LOCKWASHER        O - Replaced by 13-26992
 

This part has been superseded.

13-20924 - 13-20924 - LOCKWASHER O [ More info ]
Unavailable
Replaced by 13-26992
LOCKWASHER (.250) Stain 13-26992
 

About Mercury Marine

OEM Part

13-26992 - LockWasher - Priced Individually [ More info ]

Add to shopping cart $0.80
10+ in stock. Explain stock levels

#21 34-20035 REED , FUEL PRESSUE VALVE (1,1 required per assembly)
REED ,NLA 34-20035
 

About Mercury Marine

OEM Part

34-20035 - Reed, NLA [ More info ]

Add to shopping cart $1.50
10+ in stock. Explain stock levels

#22 34-20036 STOP , FUEL PRESSUE VALVE REED (1,1 required per assembly)
34-20036 - REED STOP         O NLA
 

About Mercury Marine

OEM Part

34-20036 - REED STOP O NLA [ More info ]
Unavailable
#23 10-20037 SCREW , FUEL PRESSUE VALVE COVER (2,2 required per assembly)
1043725 10-20037
 

About Mercury Marine

OEM Part

10-20037 - Screw - Priced Individually [ More info ]

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

SCREW (#6-32 x .380) 10-43725
10-43725

About Mercury Marine

OEM Part

10-43725 - Screw [ More info ]

Add to shopping cart $1.30
10+ in stock. Explain stock levels

#24 27-20039 GASKET , PRESSUE VALVE (1,1 required per assembly)
Gasket,NLA 27-20039
 

About Mercury Marine

OEM Part

27-20039 - Gasket [ More info ]

Add to shopping cart $4.50
10+ in stock. Explain stock levels

#25 20038 COVER , PRESSUE VALVE (1,1 required per assembly)
20038 - COVER             O - Replaced by -25833
 

This part has been superseded.

20038 - 20038 - COVER O [ More info ]
Unavailable
Replaced by -25833
25833 - COVER             O NLA
 

About Mercury Marine

OEM Part

25833 - COVER O NLA [ More info ]
Unavailable
#26 13-20040 LOCKWASHER , PRESSUE VALVE COVER SCREW (3,3 required per assembly)
13-20040 - LOCKWASHER        O - Replaced by 13-26996
 

This part has been superseded.

13-20040 - 13-20040 - LOCKWASHER O [ More info ]
Unavailable
Replaced by 13-26996
LOCKWASHER (#10) Stainl 13-26996
 

About Mercury Marine

OEM Part

13-26996 - LockWasher - Priced Individually [ More info ]

Add to shopping cart $0.90
10+ in stock. Explain stock levels

#27 10-20041 SCREW , PRESSUE VALVUE COVER MOUNTING (3,3 required per assembly)
SCREW,NLA 10-20041
 

About Mercury Marine

OEM Part

10-20041 - Screw, NLA [ More info ]

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

#-- 11Q2-24A 1 END CAP ASSEMBLY LOWER (1,1 required per assembly)
1102-24A 1 - END CAP ASSY      O - Replaced by 1102-24A 4
 

This part has been superseded.

1102-24A 1 - 1102-24A 1 - END CAP ASSY O [ More info ]
Unavailable
Replaced by 1102-24A 4
1102-24A 4 - END CAP ASSY      O - Replaced by 1102-1484A 1
 

This part has been superseded.

1102-24A 4 - 1102-24A 4 - END CAP ASSY O [ More info ]
Unavailable
Replaced by 1102-1484A 1
1102-1484A 1 - END CAP ASSY      O - Replaced by 1102-4181A 3
 

This part has been superseded.

1102-1484A 1 - 1102-1484A 1 - END CAP ASSY O [ More info ]
Unavailable
Replaced by 1102-4181A 3
1102-4181A 3 - END CAP ASSY      O NLA
 

About Mercury Marine

OEM Part

1102-4181A 3 - END CAP ASSY O NLA [ More info ]
Unavailable
#28 30-20080 BALL BEARING , LOWER END CAP (1,1 required per assembly)
30-20080 - BALL BEARING      O - Replaced by 30-53853
 

This part has been superseded.

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

This part has been superseded.

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

This part has been superseded.

30-63742 - 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
3 in stock. Explain stock levels

#29 26-25840 OIL SEAL , LOWER END CAP BALL BEARING (1,1 required per assembly)
2629477 26-25840
 

About Mercury Marine

OEM Part

26-25840 - OIL SEAL [ More info ]

Add to shopping cart $1.30
10+ in stock. Explain stock levels

SEAL,NLA 26-29477
26-29477

About Mercury Marine

OEM Part

26-29477 - Seal, NLA [ More info ]

Add to shopping cart $36.00
10+ in stock. Explain stock levels

#30 25-20081 "O" RING LOWER END CAP (1,1 required per assembly)
O-RING 25-20081
25-20081

About Mercury Marine

OEM Part

25-20081 - O-Ring - Priced Individually [ More info ]

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

O-Ring
18-7151

About Sierra Marine

OEM Match

18-7151-9 - (PK5) O-Ring Mercury 25-20081 [ More info ]

Add to shopping cart $12.45 $7.10
2 in stock. Explain stock levels

#32 15-20085 SHIM END CAP TO CRANKCASE (, required per assembly)
#33 13-20223 WASHER , END CAP MOUNTING STUD (3,3 required per assembly)
13-20223 - LOCKWASHER        O - Replaced by 13-26993
 

This part has been superseded.

13-20223 - 13-20223 - LOCKWASHER O [ More info ]
Unavailable
Replaced by 13-26993
LOCKWASHER (.312) 13-26993
 

About Mercury Marine

OEM Part

13-26993 - LockWasher - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ in stock. Explain stock levels

#34 11-20083 NUT , END CAP MOUNTING STUD (3,3 required per assembly)
1122053 11-20083
 

About Mercury Marine

OEM Part

11-20083 - Nut - Priced Individually [ More info ]

Add to shopping cart $0.80
10+ in stock. Explain stock levels

NUT (.312-24) 11-22053
11-22053

About Mercury Marine

OEM Part

11-22053 - Nut - Priced Individually [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

#36 11-20088 NUT , CRANKCASE STUD (18,18 required per assembly)
NUT,NLA 11-20088
 

About Mercury Marine

OEM Part

11-20088 - Nut, NLA [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

#-- 12-20546 WASHER , CRANKCASE STUD (4,4 required per assembly)
WASHER Note: must be ordered in multiples of 5 12-20546
 

About Mercury Marine

OEM Part

12-20546 - Washer - Priced Individually [ More info ]

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

#37 10-20089 SCREW , MAIN BEARING LOCKING (2,2 required per assembly)
SCREW,NLA 10-20089
 

About Mercury Marine

OEM Part

10-20089 - Screw, NLA [ More info ]

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

#38 10-20359 SCREW CENTER MAIN BEARING LOCKING (1,1 required per assembly)
SCREW (.375-16 x 1.00) 10-20359
10-20359

About Mercury Marine

OEM Part

10-20359 - Screw - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ in stock. Explain stock levels

#39 14-20091 TAB WASHER , BEARING LOCKING SCREW (3,3 required per assembly)
TAB WASHER 14-20091
 

About Mercury Marine

OEM Part

14-20091 - Tab Washer - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ in stock. Explain stock levels

#40 17-20032 DOWEL PIN , CYLINDER BLOCK TO MAIN BEARING (2,2 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