Logo

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

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 N.S.S. CYLINDER BLOCK (1,1 required per assembly)
#2 1001-19A 1 CYLINDER BLOCK COVER ASSEMBLY (1,1 required per assembly)
COVER ASSY,NLA 1001-19A 1  
1001-19A 1OEM Part 1001-19A 1 - Cover Assembly, NLA (more info) About Mercury Marine $70.00 $70.00 Add to shopping cart
1 in stock. Explain stock levels
#3 22-20025 PIPE PLUG , CYLINDER BLOCK COVER (4,4 required per assembly)
PLUG              O - Replaced by 22-73379  
22-20025This part has been superseded. PLUG O - Replaced by 22-73379
(more info)
    UnavailableUnavailable Parts
PLUG (.250-18) 22-73379  
22-73379OEM Part 22-73379 - Plug - Priced Individually (more info) About Mercury Marine $5.90 $3.31 Add to shopping cart
10+ in stock. Explain stock levels
#- 23-20582 BUSHING ASSY., CYLINDER BLOCK COVER (2,2 required per assembly)
LEVER             O NLA  
20582 LEVER O NLA
(more info)
    UnavailableUnavailable Parts
#4 23-20326 SPACER , CYL. BLOCK COVER TO TOP COWL (2,2 required per assembly)
SPACER,NLA 23-20326 23-20326
23-20326OEM Part 23-20326 - Spacer, NLA (more info) About Mercury Marine $12.50 $12.50 Add to shopping cart
10+ in stock. Explain stock levels
#5 27-20026 GASKET , CYLINDER BLOCK COVER (1,1 required per assembly)
Gasket,NLA 27-20026  
27-20026OEM Part 27-20026 - Gasket (more info) About Mercury Marine $6.50 $6.50 Add to shopping cart
10+ in stock. Explain stock levels
#6 10-20027 SCREW , CYLINDER BLOCK COVER MOUNTING (18,18 required per assembly)
SCREW             O - Replaced by 10-28668  
10-20027This part has been superseded. SCREW O - Replaced by 10-28668
(more info)
    UnavailableUnavailable Parts
SCREW (.250-20 x 10-28668 10-28668
10-28668OEM Part 10-28668 - Screw - Priced Individually (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
8 in stock. Explain stock levels
Screw,Wtr Pckt/Mr Alpha 18-3229-9
18-3229-9OEM Match 18-3229-9 - Screw, 10-28668, 5PK (more info) About Sierra Marine $9.95 $4.54 Add to shopping cart
Available to order:
Usually ships
within 8 days
#7 12-20028 WASHER , CYL BLOCK COVER MTG SCREW (18,18 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
#- 1100-39A 1 END CAP ASSEMBLY , UPPER (1, required per assembly)
END CAP ASSY ,NLA 1100-39A 1  
1100-39A 1OEM Part 1100-39A 1 - End Cap Assembly, NLA (more info) About Mercury Marine $22.00 $22.00 Add to shopping cart
1 in stock. Explain stock levels
#- 1100-339A 1 END CAP ASSEMBLY , UPPER (1,1 required per assembly)
END CAP ASSY ,NLA 1100-339A 1 1100-339A 1
1100-339A 1OEM Part 1100-339A 1 - End Cap Assembly, NLA (more info) About Mercury Marine $98.00 $98.00 Add to shopping cart
9 in stock. Explain stock levels
#8 30-20080 BALL BEARING UPPER 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
#9 26-20079 OIL SEAL , UPPER END CAP BEARING (1,1 required per assembly)
OIL SEAL          O - Replaced by 26-25837  
26-20079This part has been superseded. OIL SEAL O - Replaced by 26-25837
(more info)
    UnavailableUnavailable Parts
OIL SEAL          O - Replaced by 26-29476  
26-25837This part has been superseded. OIL SEAL O - Replaced by 26-29476
(more info)
    UnavailableUnavailable Parts
OIL SEAL @5       O - Replaced by 26-41953  
26-29476This part has been superseded. OIL SEAL @5 O - Replaced by 26-41953
(more info)
    UnavailableUnavailable Parts
SEAL Note: must be ordered in multiples of 2 26-41953 26-41953
26-41953OEM Part 26-41953 - Seal - Priced Individually (more info) About Mercury Marine $14.90 $14.90 Add to shopping cart
10+ in stock. Explain stock levels
Oil Seal 18-2016
18-2016OEM Match 18-2016 - Seal, 26-41953 (more info)
Replaces OEM #0764337
About Sierra Marine $10.99 $8.18 Add to shopping cart
10+ in stock. Explain stock levels
#10 25-20081 "O" RING UPPER 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
#12 15-20082 SHIM , END CAP COVER TO CRANKCASE (1,1 required per assembly)
#13 11-20083 NUT, END CAP COVER MOUNTING STUD (4,4 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
#14 13-20223 WASHER , END CAP COVER MTG. STUD NUT (4,4 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
#15 16-20351 STUD , CRANKCASE TO UPPER END CAP (4,4 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
#-- 20996A 1 MAGNETO ADAPTER ASSEMBLY (1,1 required per assembly)
ADAPTOR ASSY      O NLA  
20996A 1 ADAPTOR ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#16 26-21969 OIL SEAL , MAGNETO SHAFT BEARING (1,1 required per assembly)
OIL SEAL          O NLA  
26-21969 OIL SEAL O NLA
(more info)
    UnavailableUnavailable Parts
#17 53-20067 SNAP RING , MAGNETO SHAFT BEARING (1,1 required per assembly)
RETAINING RING    O NLA  
53-20067 RETAINING RING O NLA
(more info)
    UnavailableUnavailable Parts
#18 30-20066 BALL BEARING , MAGNETO SHAFT (1,1 required per assembly)
BEARING-BALL,NLA 30-20066 30-20066
30-20066OEM Part 30-20066 - Ball Bearing (more info) About Mercury Marine $50.00 $50.00 Add to shopping cart
10+ in stock. Explain stock levels
#20 31-20069 NEEDLE BEARING , MAGNETO SHAFT LOWER (1,1 required per assembly)
ROLLER BEARING ,NLA 31-20069 31-20069
31-20069OEM Part 31-20069 - Roller Bearing, NLA (more info) About Mercury Marine $11.50 $11.50 Add to shopping cart
1 in stock. Explain stock levels
#21 26-21970 OIL SEAL , MAGNETO SHAFT NEEDLE BRG. (1,1 required per assembly)
OIL SEAL          O NLA  
26-21970 OIL SEAL O NLA
(more info)
    UnavailableUnavailable Parts
#22 10-20259 SCREW , GREASE FILLER HOLE (1,1 required per assembly)
SCREW             O - Replaced by 10-28634  
10-20259This part has been superseded. SCREW O - Replaced by 10-28634
(more info)
    UnavailableUnavailable Parts
SCREW @5          O - Replaced by 10-79953 10-28634
10-28634This part has been superseded. SCREW @5 O - Replaced by 10-79953
(more info)
    UnavailableUnavailable Parts
SCREW @5          O - Replaced by 10-79953A 2 10-79953
10-79953This part has been superseded. SCREW @5 O - Replaced by 10-79953A 2
(more info)
    UnavailableUnavailable Parts
SCREW KIT-DRAIN   O - Replaced by 10-79953Q 2 10-79953A 2
10-79953A 2This part has been superseded. SCREW KIT-DRAIN O - Replaced by 10-79953Q 2
(more info)
    UnavailableUnavailable Parts
SCREW KIT @2      O - Replaced by 10-79953Q04 10-79953Q 2
10-79953Q 2This part has been superseded. SCREW KIT @2 O - Replaced by 10-79953Q04
(more info)
    UnavailableUnavailable Parts
SCREW KIT Drain 10-79953Q04 10-79953Q04
10-79953Q04OEM Part 10-79953Q04 - Screw Kit - Priced Individually (more info) About Mercury Marine $5.70 $5.70 Add to shopping cart
10+ in stock. Explain stock levels
DRAIN PLUG 18-2244
18-2244OEM Match 18-2244 - Plug Kit, 10-79953A2 (more info) About Sierra Marine $2.99 $2.07 Add to shopping cart
10+ in stock. Explain stock levels
SCREW-DRAIN Note: must be ordered in multiples of 2   10 79953K04 10-79953K04
10-79953K04OEM Part 10-79953K04 - Drain Screw - Priced Individually (more info) About Mercury Marine $5.70 $5.70 Add to shopping cart
1 in stock. Explain stock levels
#23 12-20260 WASHER , GREASE FILLER SCREW (1,1 required per assembly)
WASHER @15        O - Replaced by 12-19183 12-20260
12-20260This part has been superseded. WASHER @15 O - Replaced by 12-19183
(more info)
    UnavailableUnavailable Parts
12191832 12-19183 12-19183
12-19183OEM Part 12-19183 - Washer-BLK - Priced Individually (more info) About Mercury Marine $0.80 $0.80 Add to shopping cart
10+ in stock. Explain stock levels
WASHER-ORAN @15   O - Replaced by 12-19183  3 12-19183  2
12-19183 2This part has been superseded. WASHER-ORAN @15 O - Replaced by 12-19183 3
(more info)
    UnavailableUnavailable Parts
SEAL 12-19183  3 12-19183 3
12-19183 3OEM Part 12-19183 3 - Seal -Blue - Priced Individually (more info) About Mercury Marine $1.00 $1.00 Add to shopping cart
10+ in stock. Explain stock levels
DRAIN GASKET 18-2945-9
18-2945-9OEM Match 18-2945-9 - Gasket 12-19183 2-Pack (more info)
Replaces OEM #0307552
About Sierra Marine $2.78 $1.52 Add to shopping cart
10+ in stock. Explain stock levels
SEAL (4) Note: must be ordered in multiples of 2   12 19183Q02 12-19183Q02
12-19183Q02OEM Part 12-19183Q02 - Seals, Pack of 4 (more info) About Mercury Marine $5.00 $5.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
SEAL (4) Note: must be ordered in multiples of 2   12 19183K02 12-19183K02
12-19183K02OEM Part 12-19183K02 - Seal, Pack of 4 (more info) About Mercury Marine $5.00 $5.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
#24 10-21046 SCREW , MAGNETO ADAPTER TO CRANKCASE (3,3 required per assembly)
SCREW             O NLA  
10-21046 SCREW O NLA
(more info)
    UnavailableUnavailable Parts
#26 12-20546 WASHER , MAGNETO ADAPTER SCREW (3,3 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
#-- 27-20095 GASKET , CYL. BLOCK TO MANIFOLD PLATE (1,1 required per assembly)
GASKET            O NLA  
27-20095 GASKET O NLA
(more info)
    UnavailableUnavailable Parts
#-- 20096 PLATE , EXHAUST MANIFOLD (1,1 required per assembly)
PLATE             O NLA  
20096 PLATE O NLA
(more info)
    UnavailableUnavailable Parts
#-- 27-20097 ,GASKET , MANIFOLD PLATE COVER (1,1 required per assembly)
GASKET            O NLA  
27-20097 GASKET O NLA
(more info)
    UnavailableUnavailable Parts
#-- 10-20098 SCREW , MANIFOLD COVER MOUNTING (17,17 required per assembly)
SCREW260-114@25   O NLA  
10-20098 [email protected] O NLA
(more info)
    UnavailableUnavailable Parts
#-- 13-20924 LOCKWASHER , MANIFOLD COVER SCREW (17,17 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
#-- 27-20390 GASKET , POWERHEAD TO BOTTOM COWL (1,1 required per assembly)
GASKET Note: must be ordered in multiples of 2 27-20390 27-20390
27-20390OEM Part 27-20390 - Gasket - Priced Individually (more info) About Mercury Marine $19.80 $16.96 Add to shopping cart
2 in stock. Explain stock levels
#-- 32-20934 ,AIR LINE (1,1 required per assembly)
AIR LINE          O - Replaced by 32-22795A 1  
32-20934This part has been superseded. AIR LINE O - Replaced by 32-22795A 1
(more info)
    UnavailableUnavailable Parts
HOSE ASSY         O - Replaced by 32-49471  
32-22795A 1This part has been superseded. HOSE ASSY O - Replaced by 32-49471
(more info)
    UnavailableUnavailable Parts
FUEL LINE,NLA 32-49471  
32-49471OEM Part 32-49471 - Fuel Line, NLA (more info) About Mercury Marine $9.50 $9.50 Add to shopping cart
2 in stock. Explain stock levels
#-- 27-21919 GASKET SET (1,1 required per assembly)
GASKET SET        O - Replaced by 27-21919A 1  
27-21919This part has been superseded. GASKET SET O - Replaced by 27-21919A 1
(more info)
    UnavailableUnavailable Parts
GASKET SET        O NLA  
27-21919A 1 GASKET SET O NLA
(more info)
    UnavailableUnavailable Parts