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Parts for Mercury Mark & Kiekhaefer Mark 30H, 55H Cylinder Block & Crankcase Assembly

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 821-1012A 6 CYLINDER BLOCK & CRANKCASE ASSEMBLY (1,,, required per assembly)
CYLINDER BLOCK    O - Replaced by 821-1316A 4  
821-1012A 6This part has been superseded. CYLINDER BLOCK O - Replaced by 821-1316A 4
(more info)
    UnavailableUnavailable Parts
CYLINDER BLOCK    O NLA  
821-1316A 4 CYLINDER BLOCK O NLA
(more info)
    UnavailableUnavailable Parts
#1 821-1316A 4 CYLINDER BLOCK & CRANKCASE ASSEMBLY (,1,, required per assembly)
#1 808-1137A 2 CYLINDER BLOCK & CRANKCASE ASSEMBLY (,,1, required per assembly)
CYLINDER BLOCK    O - Replaced by 808-1137A 4  
808-1137A 2This part has been superseded. CYLINDER BLOCK O - Replaced by 808-1137A 4
(more info)
    UnavailableUnavailable Parts
CYLINDER BLOCK    O NLA  
808-1137A 4 CYLINDER BLOCK O NLA
(more info)
    UnavailableUnavailable Parts
#1 808-1137A 4 CYLINDER BLOCK & CRANKCASE ASSEMBLY (,,,1 required per assembly)
#- 17-20323 DOWEL PIN, CYLINDER BLOCK TO CENTER MAIN BEARING (1,1,1,1 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
#- 17-20032 DOWEL, PIN CYLINDER BLOCK TO MAIN BEARING (2,2,2,2 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
#- 23-26348 BUSHING, CRANKCASE (2,2,2,2 required per assembly)
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
#2 16-25385 STUD, CARBURETOR MOUNTING (1 1/8) (4,4,, required per assembly)
STUD @3           O NLA  
16-25385 STUD @3 O NLA
(more info)
    UnavailableUnavailable Parts
#2 16-25919 STUD, CARBURETOR MOUNTING (1 1/8) (,,4, required per assembly)
STUD              O NLA  
16-25919 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#2 16-21831 STUD, CARBURETOR MOUNTING (1 1/4) (,,,4 required per assembly)
STUD @3           O NLA  
16-21831 STUD @3 O NLA
(more info)
    UnavailableUnavailable Parts
#3 17-F2033 DOWEL PIN, CRANKCASE TO CYLINDER BLOCK (2,2,2,2 required per assembly)
PIN-GROOVE,NLA 17-F2033  
17-F2033OEM Part 17-F2033 - Pin -groove, NLA (more info) About Mercury Marine $1.25 $1.25 Add to shopping cart
10+ in stock. Explain stock levels
#4 16-20357 STUD, CRANKCASE TO DRIVE SHAFT HOUSING (2,2,2,2 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
#- 22-21290 PLUG, PIPE - CYLINDER BLOCK BLEED HOLES (2,,, required per assembly)
PLUG @5           O - Replaced by 22-52644  
22-21290This part has been superseded. PLUG @5 O - Replaced by 22-52644
(more info)
    UnavailableUnavailable Parts
2235268 22-52644  
22-52644OEM Part 22-52644 - Plug (more info) About Mercury Marine $0.85 $0.85 Add to shopping cart
6 in stock. Explain stock levels
2239072 22-35268  
22-35268OEM Part 22-35268 - Plug (more info) About Mercury Marine $1.85 $1.85 Add to shopping cart
1 in stock. Explain stock levels
PLUG              O - Replaced by 22-39072  1 22-39072
22-39072This part has been superseded. PLUG O - Replaced by 22-39072 1
(more info)
    UnavailableUnavailable Parts
PLUG Pipe (.125-2 22-39072  1 22-39072 1
22-39072 1OEM Part 22-39072 1 - Plug - Priced Individually (more info) About Mercury Marine $6.30 $6.30 Add to shopping cart
2 in stock. Explain stock levels
#5 10-22039 SCREW, CRANKCASE TO CYLINDER BLOCK (2 3/4) (4,4,4,4 required per assembly)
SCREW,NLA 10-22039  
10-22039OEM Part 10-22039 - Screw, NLA (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
10+ in stock. Explain stock levels
#6 10-22040 SCREW, CRANKCASE TO CYLINDER BLOCK (1 1/2) (14,14,14,1 required per assembly)
SCREW @5          O - Replaced by 10-69097  
10-22040This part has been superseded. SCREW @5 O - Replaced by 10-69097
(more info)
    UnavailableUnavailable Parts
SCREW             O - Replaced by 10-78841  
10-69097This part has been superseded. SCREW O - Replaced by 10-78841
(more info)
    UnavailableUnavailable Parts
BOLT              O NLA  
10-78841 BOLT O NLA
(more info)
    UnavailableUnavailable Parts
#- 12-20084 WASHER, CRANKCASE SCREW (18,18,18, required per assembly)
WASHER (.328 x .5 12-20084 12-20084
12-20084OEM Part 12-20084 - Washer - Priced Individually (more info) About Mercury Marine $2.07 $2.07 Add to shopping cart
10+ in stock. Explain stock levels
#7 11-25594 NUT, CRANKCASE SCREW (3,3,3, required per assembly)
11862902 11-25594  
11-25594OEM Part 11-25594 - Nut Note: Must be ordered in multiples of 5 (more info) About Mercury Marine $0.95 $0.95 Add to shopping cart
3 in stock. Explain stock levels
NUT (.312-24) 11-862902  
11-862902OEM Part 11-862902 - Nut - Priced Individually (more info) About Mercury Marine $1.60 $1.60 Add to shopping cart
Available to order:
Usually ships
within 8 days
#8 11-20461 NUT, CRANKCASE SCREW (15,15,15, required per assembly)
NUT               O - Replaced by 11-29250  
11-20461This part has been superseded. NUT O - Replaced by 11-29250
(more info)
    UnavailableUnavailable Parts
NUT (.312-24) 11-29250 11-29250
11-29250OEM Part 11-29250 - Nut - Priced Individually (more info) About Mercury Marine $1.90 $1.90 Add to shopping cart
10+ in stock. Explain stock levels
#9 10-20089 SCREW, MAIN BEARING LOCKING (2,2,2,2 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
#10 14-20091 TAB WASHER, BEARING LOCKING SCREW (3,3,3,3 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
#11 10-20359 SCREW, CENTER MAIN BEARING LOCKING (1,1,1,1 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
#12 1100-339A 1 END CAP ASSEMBLY, UPPER (1,1,1,1 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
#13 30-20080 BEARING, BALL - UPPER END CAP (1,1,1,1 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
#14 25-20081 "O" RING, UPPER END CAP (1,1,1,1 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
#15 26-25837 OIL SEAL (1,1,1,1 required per assembly)
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
#16 15-20082 SHIM, UPPER END CAP TO CRANKCASE (.002-3-5-10) (AR,AR,AR,A required per assembly)
#17 13-20223 LOCKWASHER, END CAP MOUNTING SCREW (4,4,4,4 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
#18 10-28782 SCREW, END CAP MOUNTING (4,4,4,4 required per assembly)
SCREW (.312-18 x 10-28782 10-28782
10-28782OEM Part 10-28782 - Screw - Priced Individually (more info) About Mercury Marine $2.00 $1.12 Add to shopping cart
2 in stock. Explain stock levels
#19 1102-24A 3 END CAP ASSEMBLY, LOWER (1,,1, required per assembly)
END CAP ASSY      O NLA  
1102-24A 3 END CAP ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#19 1102-1484A 1 END CAP ASSEMBLY, LOWER (,1,, required per assembly)
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
#19 1102-1484A 2 END CAP ASSEMBLY, LOWER (,,,1 required per assembly)
END CAP ASSY      O - Replaced by 1102-24A 3  
1102-1484A 2This part has been superseded. END CAP ASSY O - Replaced by 1102-24A 3
(more info)
    UnavailableUnavailable Parts
#22 26-25840 OIL SEAL, BOTTOM (,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
#-- 21-28481A 1 CHECK VALVE ASSEMBLY (,1,, required per assembly)
CHECK VALVE KIT,NLA 21-28481A 1  
21-28481A 1OEM Part 21-28481A 1 - Check Valve Kit, NLA (more info) About Mercury Marine $24.00 $24.00 Add to shopping cart
10+ in stock. Explain stock levels
#23 15-20085 SHIM, LOWER END CAP TO CRANKCASE (.002-3-5-10) (AR,AR,AR,A required per assembly)
#25 10-29198 SCREW, END CAP MOUNTING (,3,,3 required per assembly)
SCREW AND LOCKWAS 10-29198 10-29198
10-29198OEM Part 10-29198 - Screw w/ Lw - Priced Individually (more info) About Mercury Marine $2.90 $1.96 Add to shopping cart
10+ in stock. Explain stock levels
#27 27-26923 GASKET, CYLINDER BLOCK TO MANIFOLD PLATE (1,1,1,1 required per assembly)
GASKET,NLA LONG 27-26923 27-26923
27-26923OEM Part 27-26923 - Gasket - Priced Individually (more info) About Mercury Marine $16.00 $16.00 Add to shopping cart
10+ in stock. Explain stock levels
#26 26922 PLATE, EXHAUST MANIFOLD (1,1,1,1 required per assembly)
PLATE             O NLA  
26922 PLATE O NLA
(more info)
    UnavailableUnavailable Parts
#28 28240 COVER, EXHAUST MANIFOLD (1,1,1,1 required per assembly)
COVER             O NLA  
28240 COVER O NLA
(more info)
    UnavailableUnavailable Parts
#29 10-28668 SCREW, MANIFOLD COVER MOUNTING (15,15,15, required per assembly)
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
#29 10-28666 SCREW, MANIFOLD COVER MOUNTING (,,,2 required per assembly)
SCREW,NLA 10-28666  
10-28666OEM Part 10-28666 - Screw, NLA (more info) About Mercury Marine $1.25 $1.25 Add to shopping cart
10+ in stock. Explain stock levels
#30 12-20028 WASHER, COVER MOUNTING SCREW (2,2,2,2 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
#31 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
#31 27-27936 GASKET, TRANSFER PORT COVER (,2,,2 required per assembly)
GASKET @10        O - Replaced by 27-27936  1 27-27936
27-27936This part has been superseded. GASKET @10 O - Replaced by 27-27936 1
(more info)
    UnavailableUnavailable Parts
GASKET 27-27936  1 27-27936  1
27-27936 1OEM Part 27-27936 1 - Gasket (more info) About Mercury Marine $2.50 $2.50 Add to shopping cart
Available to order:
Usually ships
within 8 days
#32 25206 COVER, TRANSFER PORT (4,,4, required per assembly)
COVER,NLA 25206  
25206OEM Part 25206 - Cover, NLA (more info) About Mercury Marine $4.50 $4.50 Add to shopping cart
10+ in stock. Explain stock levels
#32 27935 COVER, TRANSFER PORT (,2,,2 required per assembly)
COVER,NLA 27935  
27935OEM Part 27935 - Cover, NLA (more info) About Mercury Marine $12.50 $12.50 Add to shopping cart
10+ in stock. Explain stock levels
#34 10-20540 SCREW, TRANSFER PORT COVER MOUNTING (8,,8, 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
#35 1000-1A 1 CYLINDER BLOCK COVER ASSEMBLY (1,1,1,1 required per assembly)
COVER ASSY        O NLA  
1000-1A 1 COVER ASSY O NLA
(more info)
    UnavailableUnavailable Parts
#36 27-22333 GASKET, CYLINDER BLOCK COVER (1,1,1,1 required per assembly)
GASKET @2         O NLA 27-22333
27-22333 GASKET @2 O NLA
(more info)
    UnavailableUnavailable Parts
#37 10-20653 SCREW, CYLINDER BLOCK COVER MOUNTING (10,10,10,1 required per assembly)
SCREW (.250-28 x 10-20653 10-20653
10-20653OEM Part 10-20653 - Bolt - Priced Individually (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
10+ in stock. Explain stock levels
#38 11-24652 NUT, COVER MOUNTING SCREW (10,10,10,1 required per assembly)
NUT (.250-28) 11-24652 11-24652
11-24652OEM Part 11-24652 - Nut - Priced Individually (more info) About Mercury Marine $1.20 $1.20 Add to shopping cart
10+ in stock. Explain stock levels