Logo

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

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 800-8A 2 CYLINDER BLOCK & CRANKSHAFT ASSEMBLY (1,1 required per assembly)
CYLINDER BLOCK    O - Replaced by 808-1321A 5  
800-8A 2This part has been superseded. CYLINDER BLOCK O - Replaced by 808-1321A 5
(more info)
    UnavailableUnavailable Parts
CYLINDER BLOCK    O NLA  
808-1321A 5 CYLINDER BLOCK O NLA
(more info)
    UnavailableUnavailable Parts
#- N.S.S. BLOCK CYLINDER (1,1 required per assembly)
#- 20065 INSERT , HELI-COIL (4,4 required per assembly)
INSERT 210-324    O - Replaced by 91-45831  
91-20065This part has been superseded. INSERT 210-324 O - Replaced by 91-45831
(more info)
    UnavailableUnavailable Parts
INSERT,NLA 91-45831  
91-45831OEM Part 91-45831 - Insert, NLA (more info) About Mercury Marine $5.00 $5.00 Add to shopping cart
10 in stock. Explain stock levels
#2 16-20984 STUD ,CYLINDER BLOCK TO CRANKSHAFT (1,1 required per assembly)
STUD @2           O NLA  
16-20984 STUD @2 O NLA
(more info)
    UnavailableUnavailable Parts
#3 16-20985 STUD , CYLINDER BLOCK TO CRANKSHAFT (2,2 required per assembly)
STUD              O - Replaced by 16-66288  
16-20985This part has been superseded. STUD O - Replaced by 16-66288
(more info)
    UnavailableUnavailable Parts
STUD @2           O - Replaced by 16-69058  
16-66288This part has been superseded. STUD @2 O - Replaced by 16-69058
(more info)
    UnavailableUnavailable Parts
168M0034449 16-69058  
16-69058OEM Part 16-69058 - Stud (more info) About Mercury Marine $8.10 $8.10 Add to shopping cart
5 in stock. Explain stock levels
STUD (.312 x 1.69 16-8M0034449  
16-8M0034449OEM Part 16-8M0034449 - Stud (more info) About Mercury Marine $8.40 $8.40 Add to shopping cart
Available to order:
Usually ships
within 8 days
#4 16-20352 STUD , CYLINDER BLOCK CRANKSHAFT (6,6 required per assembly)
MERC PERF PROD    O NLA  
16-20352 MERC PERF PROD O NLA
(more info)
    UnavailableUnavailable Parts
#5 16-20484 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
MERC PERF PROD    O NLA  
16-20484 MERC PERF PROD O NLA
(more info)
    UnavailableUnavailable Parts
#6 16-20074 STUD , CYLINDER BLOCK CRANKSHAFT (8,8 required per assembly)
STUD              O NLA  
16-20074 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#7 16-20355 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
STUD              O NLA  
16-20355 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#8 16-20354 STUD , CYLINDER BLOCK CRANKSHAFT (2,2 required per assembly)
STUD              O NLA  
16-20354 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#9 16-20983 STUD , CYLINDER BLOCK CRANKSHAFT (1,1 required per assembly)
STUD @2           O - Replaced by 16-65761  
16-20983This part has been superseded. STUD @2 O - Replaced by 16-65761
(more info)
    UnavailableUnavailable Parts
STUD @2           O - Replaced by 16-68167  
16-65761This part has been superseded. STUD @2 O - Replaced by 16-68167
(more info)
    UnavailableUnavailable Parts
STUD (.312-18/.31 16-68167  
16-68167OEM Part 16-68167 - Stud (more info) About Mercury Marine $18.50 $15.84 Add to shopping cart
Available to order:
Usually ships
within 8 days
#10 16-20357 STUD , CYLINDER BLOCK TO DRIVE SHAFT HOUSING (6,6 required per assembly)
STUD              O - Replaced by 16-29989  
16-20357This part has been superseded. STUD O - Replaced by 16-29989
(more info)
    UnavailableUnavailable Parts
STUD,NLA 16-29989  
16-29989OEM Part 16-29989 - Stud, NLA (more info) About Mercury Marine $6.00 $6.00 Add to shopping cart
10+ in stock. Explain stock levels
#-- 16-20351 STUD , CYLINDER BLOCK TO UPPER END CAP (2,2 required per assembly)
STUD              O - Replaced by 16-35099  
16-20351This part has been superseded. STUD O - Replaced by 16-35099
(more info)
    UnavailableUnavailable Parts
STUD @3           O - Replaced by 16-64280  
16-35099This part has been superseded. STUD @3 O - Replaced by 16-64280
(more info)
    UnavailableUnavailable Parts
STUD              O - Replaced by 16-68164  
16-64280This part has been superseded. STUD O - Replaced by 16-68164
(more info)
    UnavailableUnavailable Parts
STUD              O - Replaced by 16-64936  
16-68164This part has been superseded. STUD O - Replaced by 16-64936
(more info)
    UnavailableUnavailable Parts
STUD,NLA 16-64936  
16-64936OEM Part 16-64936 - Stud, NLA (more info) About Mercury Marine $4.00 $4.00 Add to shopping cart
10+ in stock. Explain stock levels
#11 16-20078 STUD , CYLINDER BLOCK TO LOWER END CAP (1,1 required per assembly)
STUD              O - Replaced by 16-53579  
16-20078This part has been superseded. STUD O - Replaced by 16-53579
(more info)
    UnavailableUnavailable Parts
STUD @2           O - Replaced by 16-63332  
16-53579This part has been superseded. STUD @2 O - Replaced by 16-63332
(more info)
    UnavailableUnavailable Parts
STUD (.312 x 1.28 16-63332  
16-63332OEM Part 16-63332 - Stud (more info) About Mercury Marine $3.60 $3.60 Add to shopping cart
10+ in stock. Explain stock levels
#-- 23-20528 BUSHING ASSEM,BLY , CRANKCASE (2,2 required per assembly)
BUSHING           O - Replaced by 23-26348  
23-20528This part has been superseded. BUSHING O - Replaced by 23-26348
(more info)
    UnavailableUnavailable Parts
BUSHING      ,NLA 23-26348  
23-26348OEM Part 23-26348 - Bushing , NLA (more info) About Mercury Marine $14.00 $14.00 Add to shopping cart
10+ in stock. Explain stock levels
#13 12-20086 WASHER , (16-20354) (2,2 required per assembly)
WASHER (.390 x .6 12-20086  
12-20086OEM Part 12-20086 - Washer - Priced Individually (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
Available to order:
Usually ships
within 8 days
#14 11-20087 NUT (16-203254 STUD) (2,2 required per assembly)
NUT @5            O NLA  
11-20087 NUT @5 O NLA
(more info)
    UnavailableUnavailable Parts
#15 17-20033 DOWEL PIN , CYLINDER BLOCK TO CRANKCASE (2,2 required per assembly)
1743044 17-20033  
17-20033OEM Part 17-20033 - Pin -Dowel - Priced Individually (more info) About Mercury Marine $1.15 $1.15 Add to shopping cart
3 in stock. Explain stock levels
PIN Dowel - Witho 17-43044  
17-43044OEM Part 17-43044 - Pin -Dowel-solid (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 17-20323 DOWEL PIN , CYLINDER BLOCK TO CENTER MAIN BRG. (1,1 required per assembly)
PIN Dowel 17-20323  
17-20323OEM Part 17-20323 - Pin -Dowel - Priced Individually (more info) About Mercury Marine $2.90 $1.96 Add to shopping cart
10+ in stock. Explain stock levels
#17 20029 COVER , TRANSFR PORT (4,4 required per assembly)
COVER,NLA 20029  
20029OEM Part 20029 - Cover, NLA (more info) About Mercury Marine $4.50 $4.50 Add to shopping cart
10+ in stock. Explain stock levels
#18 27-20030 GASKET , TRANSFER PORT COVER (4,4 required per assembly)
Gasket,NLA 27-20030  
27-20030OEM Part 27-20030 - Gasket (more info) About Mercury Marine $6.00 $6.00 Add to shopping cart
10+ in stock. Explain stock levels
#19 10-21185 SCREW , TRANSFER PORT COVER MOUNTING (6,6 required per assembly)
SCREW             O - Replaced by 10-24222  
10-21185This part has been superseded. SCREW O - Replaced by 10-24222
(more info)
    UnavailableUnavailable Parts
SCREW             O - Replaced by 10-28713  
10-24222This part has been superseded. SCREW O - Replaced by 10-28713
(more info)
    UnavailableUnavailable Parts
SCREW,NLA 10-28713  
10-28713OEM Part 10-28713 - Screw, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
10+ in stock. Explain stock levels
#-- 10-20540 SCREW , TRANSFER PORT COVER MOUNTING (2,2 required per assembly)
SCREW,NLA 10-20540  
10-20540OEM Part 10-20540 - Screw, NLA (more info) About Mercury Marine $1.25 $1.25 Add to shopping cart
10+ in stock. Explain stock levels
#20 12-20028 WASHER , TRANSFER PORT COVER SCREW (8,8 required per assembly)
WASHER (.265 x .4 12-20028  
12-20028OEM Part 12-20028 - Washer - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#-- 13-20924 LOCKWASHER , TRANSFER PORT COVER SCREW (2,2 required per assembly)
LOCKWASHER        O - Replaced by 13-26992  
13-20924This part has been superseded. LOCKWASHER O - Replaced by 13-26992
(more info)
    UnavailableUnavailable Parts
LOCKWASHER (.250) 13-26992  
13-26992OEM Part 13-26992 - LockWasher - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
10+ in stock. Explain stock levels
#21 34-20035 REED , FUEL PRESSUE VALVE (1,1 required per assembly)
REED ,NLA 34-20035  
34-20035OEM Part 34-20035 - Reed, NLA (more info) About Mercury Marine $1.25 $1.25 Add to shopping cart
10+ in stock. Explain stock levels
#22 34-20036 STOP , FUEL PRESSUE VALVE REED (1,1 required per assembly)
REED STOP         O NLA  
34-20036 REED STOP O NLA
(more info)
    UnavailableUnavailable Parts
#23 10-20037 SCREW , FUEL PRESSUE VALVE COVER (2,2 required per assembly)
1043725 10-20037  
10-20037OEM Part 10-20037 - Screw - Priced Individually (more info) About Mercury Marine $0.35 $0.35 Add to shopping cart
10+ in stock. Explain stock levels
SCREW (#6-32 x .3 10-43725 10-43725
10-43725OEM Part 10-43725 - Screw (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
Available to order:
Usually ships
within 8 days
#24 27-20039 GASKET , PRESSUE VALVE (1,1 required per assembly)
Gasket,NLA 27-20039  
27-20039OEM Part 27-20039 - Gasket (more info) About Mercury Marine $3.50 $3.50 Add to shopping cart
10+ in stock. Explain stock levels
#25 20038 COVER , PRESSUE VALVE (1,1 required per assembly)
COVER             O - Replaced by -25833  
20038This part has been superseded. COVER O - Replaced by -25833
(more info)
    UnavailableUnavailable Parts
COVER             O NLA  
25833 COVER O NLA
(more info)
    UnavailableUnavailable Parts
#26 13-20040 LOCKWASHER , PRESSUE VALVE COVER SCREW (3,3 required per assembly)
LOCKWASHER        O - Replaced by 13-26996  
13-20040This part has been superseded. LOCKWASHER O - Replaced by 13-26996
(more info)
    UnavailableUnavailable Parts
LOCKWASHER (#10) 13-26996  
13-26996OEM Part 13-26996 - LockWasher - Priced Individually (more info) About Mercury Marine $0.84 $0.84 Add to shopping cart
10+ in stock. Explain stock levels
#27 10-20041 SCREW , PRESSUE VALVUE COVER MOUNTING (3,3 required per assembly)
SCREW,NLA 10-20041  
10-20041OEM Part 10-20041 - Screw, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
10+ in stock. Explain stock levels
#-- 11Q2-24A 1 END CAP ASSEMBLY LOWER (1,1 required per assembly)
END CAP ASSY      O - Replaced by 1102-24A 4  
1102-24A 1This part has been superseded. END CAP ASSY O - Replaced by 1102-24A 4
(more info)
    UnavailableUnavailable Parts
END CAP ASSY      O - Replaced by 1102-1484A 1  
1102-24A 4This part has been superseded. END CAP ASSY O - Replaced by 1102-1484A 1
(more info)
    UnavailableUnavailable Parts
END CAP ASSY      O - Replaced by 1102-4181A 3  
1102-1484A 1This part has been superseded. END CAP ASSY O - Replaced by 1102-4181A 3
(more info)
    UnavailableUnavailable Parts
END CAP ASSY      O NLA  
1102-4181A 3 END CAP ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#28 30-20080 BALL BEARING , LOWER END CAP (1,1 required per assembly)
BALL BEARING      O - Replaced by 30-53853  
30-20080This part has been superseded. BALL BEARING O - Replaced by 30-53853
(more info)
    UnavailableUnavailable Parts
BALL BEARING      O - Replaced by 30-63742  
30-53853This part has been superseded. BALL BEARING O - Replaced by 30-63742
(more info)
    UnavailableUnavailable Parts
BEARING-BALL      O - Replaced by 30-63742T 30-63742
30-63742This part has been superseded. BEARING-BALL O - Replaced by 30-63742T
(more info)
    UnavailableUnavailable Parts
BEARING Ball 30-63742T 30-63742T
30-63742TOEM Part 30-63742T - Ball Bearing (more info) About Mercury Marine $28.30 $24.24 Add to shopping cart
Available to order:
Usually ships
within 8 days
Ball Bearing 18-1154
18-1154OEM Match 18-1154 - Bearing, 30-63742, 377139 (more info)
Replaces OEM #0377139
About Sierra Marine $25.99 $19.44 Add to shopping cart
1 in stock. Explain stock levels
#29 26-25840 OIL SEAL , LOWER END CAP BALL BEARING (1,1 required per assembly)
OIL SEAL          O - Replaced by 26-29477  
26-25840This part has been superseded. OIL SEAL O - Replaced by 26-29477
(more info)
    UnavailableUnavailable Parts
SEAL,NLA 26-29477 26-29477
26-29477OEM Part 26-29477 - Seal, NLA (more info) About Mercury Marine $30.00 $30.00 Add to shopping cart
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
25-20081OEM Part 25-20081 - O-Ring - Priced Individually (more info) About Mercury Marine $2.30 $2.30 Add to shopping cart
10+ in stock. Explain stock levels
O-Ring 18-7151-9
18-7151-9OEM Match 18-7151-9 - (PK5) O-Ring Mercury 25-20081 (more info) About Sierra Marine $12.45 $7.10 Add to shopping cart
Available to order:
Usually ships
within 8 days
#32 15-20085 SHIM END CAP TO CRANKCASE (, required per assembly)
#33 13-20223 WASHER , END CAP MOUNTING STUD (3,3 required per assembly)
LOCKWASHER        O - Replaced by 13-26993  
13-20223This part has been superseded. LOCKWASHER O - Replaced by 13-26993
(more info)
    UnavailableUnavailable Parts
LOCKWASHER (.312) 13-26993  
13-26993OEM Part 13-26993 - LockWasher - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#34 11-20083 NUT , END CAP MOUNTING STUD (3,3 required per assembly)
1122053 11-20083  
11-20083OEM Part 11-20083 - Nut - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
10+ in stock. Explain stock levels
NUT (.312-24) 11-22053 11-22053
11-22053OEM Part 11-22053 - Nut - Priced Individually (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
Available to order:
Usually ships
within 8 days
#36 11-20088 NUT , CRANKCASE STUD (18,18 required per assembly)
NUT,NLA 11-20088  
11-20088OEM Part 11-20088 - Nut, NLA (more info) About Mercury Marine $1.65 $1.65 Add to shopping cart
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  
12-20546OEM Part 12-20546 - Washer - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10+ in stock. Explain stock levels
#37 10-20089 SCREW , MAIN BEARING LOCKING (2,2 required per assembly)
SCREW,NLA 10-20089  
10-20089OEM Part 10-20089 - Screw, NLA (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
10+ in stock. Explain stock levels
#38 10-20359 SCREW CENTER MAIN BEARING LOCKING (1,1 required per assembly)
SCREW (.375-16 x 10-20359 10-20359
10-20359OEM Part 10-20359 - Screw - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#39 14-20091 TAB WASHER , BEARING LOCKING SCREW (3,3 required per assembly)
TAB WASHER 14-20091  
14-20091OEM Part 14-20091 - Tab Washer - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
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  
17-20032OEM Part 17-20032 - Pin -Dowel - Priced Individually (more info) About Mercury Marine $2.90 $2.90 Add to shopping cart
10+ in stock. Explain stock levels