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Parts for Mercury Mark & Kiekhaefer Mark 20H Crankcase Assembly

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 901-23A 1 CRANKCASE ASSEMBLY (1 required per assembly)
CRANKCASE         O NLA  
901-23A 1 CRANKCASE O NLA
(more info)
    UnavailableUnavailable Parts
#2 31-20594 BEARING, ROLLER (1 required per assembly)
BEARING           O NLA 31-20594
31-20594 BEARING O NLA
(more info)
    UnavailableUnavailable Parts
#3 30-20464 BEARING, BALL (1 required per assembly)
BALL BEARING      O - Replaced by 30-63326  
30-20464This part has been superseded. BALL BEARING O - Replaced by 30-63326
(more info)
    UnavailableUnavailable Parts
BEARING-BALL      O - Replaced by 30-63326T  
30-63326This part has been superseded. BEARING-BALL O - Replaced by 30-63326T
(more info)
    UnavailableUnavailable Parts
BEARING-BALL 30-63326T 30-63326T
30-63326TOEM Part 30-63326T - Ball Bearing (more info) About Mercury Marine $19.00 $19.00 Add to shopping cart
Available to order:
Usually ships
within 8 days
Ball Bearing 18-1153
18-1153OEM Match 18-1153 - Bearing 30-63326 (more info) About Sierra Marine $24.49 $19.68 Add to shopping cart
2 in stock. Explain stock levels
#4 26-20530 OIL SEAL (1 required per assembly)
SEAL              O NLA 26-20530
26-20530 SEAL O NLA
(more info)
    UnavailableUnavailable Parts
#5 16-20462 STUD, CRANKCASE TO CARBURETOR (2 required per assembly)
STUD              O - Replaced by 16-65866  
16-20462This part has been superseded. STUD O - Replaced by 16-65866
(more info)
    UnavailableUnavailable Parts
STUD @2           O NLA  
16-65866 STUD @2 O NLA
(more info)
    UnavailableUnavailable Parts
#6 16-20469 STUD, CRANKCASE TO MOUNTING BRACKET (4 required per assembly)
STUD              O - Replaced by 16-68169  
16-20469This part has been superseded. STUD O - Replaced by 16-68169
(more info)
    UnavailableUnavailable Parts
STUD              O NLA  
16-68169 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#7 34-20035 REED, FUEL TANK PRESSURE VALVE (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
#8 34-20036 REED STOP, PRESSURE VALVE REED (1 required per assembly)
REED STOP         O NLA  
34-20036 REED STOP O NLA
(more info)
    UnavailableUnavailable Parts
#9 10-20037 SCREW, REED FASTENING (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
#10 20038 COVER, PRESSURE VALVE (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
#11 27-20039 GASKET, COVER TO CRANKCASE (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
#12 13-26996 LOCKWASHER, COVER SCREW (3 required per assembly)
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
#13 10-20041 SCREW, COVER (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
#14 32-20476 AIR LINE (1 required per assembly)
AIR LINE          O - Replaced by 32-49471  
32-20476This part has been superseded. AIR LINE 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
#15 24-20477 SPRING, AIR LINE (1 required per assembly)
SPRING,NLA 24-20477  
24-20477OEM Part 24-20477 - Spring, NLA (more info) About Mercury Marine $3.50 $3.50 Add to shopping cart
4 in stock. Explain stock levels
#16 10-20090 SCREW, MAIN BEARING LOCKING (1 required per assembly)
SCREW,NLA 10-20090  
10-20090OEM Part 10-20090 - Screw, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
5 in stock. Explain stock levels
#17 14-20091 TAB WASHER, MAIN BEARING LOCKING SCREW (1 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
#18 20549A 1 FRONT STARBOARD BRACKET ASSEMBLY (1 required per assembly)
Bracket Asy,NLA 20549A 1  
20549A 1OEM Part 20549A 1 - Bracket Assembly, NLA (more info) About Mercury Marine $20.00 $20.00 Add to shopping cart
7 in stock. Explain stock levels
#19 23-26348 BUSHING, COWL MOUNTING BRACKET (1 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
#20 16-20550 STUD, COWL MOUNTING BRACKET (1 required per assembly)
STUD              O NLA  
16-20550 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#21 12-20028 WASHER, BRACKET MOUNTING STUD (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
#22 11-20184 NUT, BRACKET MOUNTING STUD (2 required per assembly)
NUT (1/4-28X7/32) 11-20184 11-20184
11-20184OEM Part 11-20184 - Nut - Priced Individually (more info) About Mercury Marine $1.30 $1.30 Add to shopping cart
2 in stock. Explain stock levels
#23 12-20551 WASHER, RUBBER - PLATE TO STARBOARD BRACKET (1 required per assembly)
WASHER            O NLA  
12-20551 WASHER O NLA
(more info)
    UnavailableUnavailable Parts
#24 20570 PLATE, COWL MOUNTING (1 required per assembly)
PLATE,NLA 20570  
20570OEM Part 20570 - Plate, NLA (more info) About Mercury Marine $15.00 $15.00 Add to shopping cart
1 in stock. Explain stock levels
#25 23-20571 BUSHING, COWL MOUNTING PLATE (1 required per assembly)
BUSHING           O NLA  
23-20571 BUSHING O NLA
(more info)
    UnavailableUnavailable Parts
#26 12-20572 WASHER, COWL MOUNTING PLATE STUD (1 required per assembly)
WASHER (.390 x .7 12-20572  
12-20572OEM Part 12-20572 - Washer (more info) About Mercury Marine $1.10 $0.62 Add to shopping cart
9 in stock. Explain stock levels
#27 11-20509 NUT, COWL MOUNTING PLATE STUD (1 required per assembly)
1134863 11-20509  
11-20509OEM Part 11-20509 - Nut - Priced Individually (more info) About Mercury Marine $2.00 $2.00 Add to shopping cart
10 in stock. Explain stock levels
NUT @3            O - Replaced by 11-826709113  
11-34863This part has been superseded. NUT @3 O - Replaced by 11-826709113
(more info)
    UnavailableUnavailable Parts
NUT (.375-24) Sta 11-826709113 11-826709113
11-826709113OEM Part 11-826709113 - Nut -ss - Priced Individually (more info) About Mercury Marine $5.10 $5.10 Add to shopping cart
3 in stock. Explain stock levels
#28 20455A 2 FRONT PORT BRACKET ASSEMBLY (1 required per assembly)
Bracket Asy,NLA 20455A 2  
20455A 2OEM Part 20455A 2 - Bracket Assembly, NLA (more info) About Mercury Marine $16.50 $16.50 Add to shopping cart
4 in stock. Explain stock levels
#33 12-20346 WASHER, COWL MOUNTING SCREW (LARGE) (2 required per assembly)
1269057 12-20346  
12-20346OEM Part 12-20346 - Washer Note: Must be ordered in multiples of 15 (more info) About Mercury Marine $1.00 $1.00 Add to shopping cart
10+ in stock. Explain stock levels
WASHER (.281 x .7 12-69057  
12-69057OEM Part 12-69057 - Washer (more info) About Mercury Marine $1.40 $1.40 Add to shopping cart
2 in stock. Explain stock levels
#34 11-20361 NUT, COWL MOUNTING SCREW (2 required per assembly)
118267089 11-20361 11-20361
11-20361OEM Part 11-20361 - Nut Note: Must be ordered in multiples of 5 (more info) About Mercury Marine $0.60 $0.60 Add to shopping cart
10+ in stock. Explain stock levels
NUT (.250-28) 11-826708  9 11-826708 9
11-826708 9OEM Part 11-826708 9 - Nut - Priced Individually (more info) About Mercury Marine $1.00 $1.00 Add to shopping cart
7 in stock. Explain stock levels
S.S. Steel Locknut 18-3722-9
18-3722-9OEM Match 18-3722-9 - Lock Nut, 121731, 11-35888 (more info)
Replaces OEM #0121731
About Sierra Marine $14.95 $7.67 Add to shopping cart
Available to order:
Usually ships
within 8 days
#35 12-20546 WASHER, CRANKCASE TO CYLINDER BLOCK STUD (7 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
#36 11-20083 NUT, CRANKCASE TO CYLINDER BLOCK STUD (6 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
#37 20453 PLATE, SPRING CLAMP (1 required per assembly)
PLATE,NLA 20453  
20453OEM Part 20453 - Plate, NLA (more info) About Mercury Marine $8.00 $8.00 Add to shopping cart
1 in stock. Explain stock levels
#39 10-20665 SCREW, CLAMP PLATE (2 required per assembly)
SCREW,NLA 10-20665  
10-20665OEM Part 10-20665 - Screw, NLA (more info) About Mercury Marine $1.35 $1.35 Add to shopping cart
10+ in stock. Explain stock levels
#40 24-20899 SPRING, DETENT (1 required per assembly)
SPRING,NLA 24-20899  
24-20899OEM Part 24-20899 - Spring, NLA (more info) About Mercury Marine $6.50 $6.50 Add to shopping cart
1 in stock. Explain stock levels
#41 54-20454 CLAMP, DETENT SPRING (1 required per assembly)
CLAMP ,NLA 54-20454  
54-20454OEM Part 54-20454 - Clamp, NLA (more info) About Mercury Marine $3.00 $3.00 Add to shopping cart
3 in stock. Explain stock levels
#43 11-20652 NUT, DETENT SPRING SCREW (2 required per assembly)
NUT @5            O - Replaced by 11-37806  
11-20652This part has been superseded. NUT @5 O - Replaced by 11-37806
(more info)
    UnavailableUnavailable Parts
NUT               O - Replaced by 11-20565  
11-37806This part has been superseded. NUT O - Replaced by 11-20565
(more info)
    UnavailableUnavailable Parts
NUT @5            O - Replaced by 11-46438  
11-20565This part has been superseded. NUT @5 O - Replaced by 11-46438
(more info)
    UnavailableUnavailable Parts
NUT (#10-32) 11-46438  
11-46438OEM Part 11-46438 - Nut - Priced Individually (more info) About Mercury Marine $4.10 $4.10 Add to shopping cart
10+ in stock. Explain stock levels
#44 10-20512 SCREW, DETENT SPRING (2 required per assembly)
SCREW @2          O - Replaced by 10-25764  
10-20512This part has been superseded. SCREW @2 O - Replaced by 10-25764
(more info)
    UnavailableUnavailable Parts
SCREW (.190-32 x 10-25764 10-25764
10-25764OEM Part 10-25764 - Screw - Priced Individually (more info) About Mercury Marine $2.50 $1.69 Add to shopping cart
10+ in stock. Explain stock levels