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Parts for Mercury Mark & Kiekhaefer Mark 25, 25E Crankcase

Engine Diagram

Ref. No. Part No. Description Manufacturer List Price Your Price Order
#1 912-870A 1 CRANKCASE ASSEMBLY (STANDARD ENGINES) (1,1,1,1 required per assembly)
CRANKCASE         O NLA  
912-870A 1 CRANKCASE O NLA
(more info)
    UnavailableUnavailable Parts
#1 912-876A 1 CRANKCASE ASSEMBLY (ELECTRIC ENGINES) (1,1,, required per assembly)
CRANKCASE         O NLA  
912-876A 1 CRANKCASE O NLA
(more info)
    UnavailableUnavailable Parts
#2 26-20530 OIL SEAL (1,1,1,1 required per assembly)
SEAL              O NLA 26-20530
26-20530 SEAL O NLA
(more info)
    UnavailableUnavailable Parts
#3 31-20594 BEARING, ROLLER (1,1,1,1 required per assembly)
BEARING           O NLA 31-20594
31-20594 BEARING O NLA
(more info)
    UnavailableUnavailable Parts
#4 30-20464 BEARING, BALL (1,1,1,1 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30-20464This part has been superseded.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30-63326This part has been superseded.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
#5 16-20469 STUD, CRANKCASE TO MOUNTING BRACKET (4,4,4,4 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16-20469This part has been superseded.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
#6 16-22806 STUD, CRANKCASE TO CARBURETOR (2,2,2,2 required per assembly)
STUD              O NLA  
16-22806 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#14 16-20467 STUD, CRANKCASE TO CRANKCASE BOTTOM (2,2,2,2 required per assembly)
STUD              O - Replaced by 16-68169  
16-20467This part has been superseded. STUD O - Replaced by 16-68169
(more info)
    UnavailableUnavailable Parts
#17 16-25932 STUD, CRANKCASE TO DRIVE SHAFT HOUSING (2,2,2,2 required per assembly)
STUD              O NLA  
16-25932 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#7 10-20090 SCREW, MAIN BEARING LOCKING (1,1,1,1 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
#8 14-20091 TAB WASHER, MAIN BEARING LOCKING SCREW (1,1,1,1 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
#9 27-20501 GASKET, CRANKCASE BOTTOM TO CRANKCASE (1,1,1,1 required per assembly)
Gasket,NLA 27-20501  
27-20501OEM Part 27-20501 - Gasket (more info) About Mercury Marine $6.50 $6.50 Add to shopping cart
10+ in stock. Explain stock levels
#10 1122-840A 1 CRANKCASE BOTTOM ASSEMBLY (1,1,1,1 required per assembly)
CRANKCASE BOTTOM  O NLA  
1122-840A 1 CRANKCASE BOTTOM O NLA
(more info)
    UnavailableUnavailable Parts
#12 26-20948 OIL SEAL (1,1,1,1 required per assembly)
SEAL ,NLA 26-20948 26-20948
26-20948OEM Part 26-20948 - Seal, NLA (more info) About Mercury Marine $18.00 $18.00 Add to shopping cart
1 in stock. Explain stock levels
#13 15-20514 SHIM, STEEL (.002-3-5-10) (AR,AR,AR,A required per assembly)
#15 13-20147 LOCKWASHER, CRANKCASE BOTTOM STUD (2,2,2,2 required per assembly)
LOCKWASHER 13-20147  
13-20147OEM Part 13-20147 - LockWasher (more info) About Mercury Marine $0.05 $0.05 Add to shopping cart
Available to order:
Usually ships
within 8 days
#16 11-20184 NUT, CRANKCASE BOTTOM STUD (2,2,2,2 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
#18 11-20509 NUT, COWL MOUNTING PLATE STUD (1,1,1,1 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
#19 12-20572 WASHER, COWL MOUNTING PLATE STUD (1,1,1,1 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
#20 23-20571 BUSHING, RUBBER TAPERED (1,1,1,1 required per assembly)
BUSHING           O NLA  
23-20571 BUSHING O NLA
(more info)
    UnavailableUnavailable Parts
#21 20570 PLATE, COWL MOUNTING (1,1,1,1 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
#21 24964 PLATE, COWL MOUNTING (1,,, required per assembly)
PLATE             O NLA  
24964 PLATE O NLA
(more info)
    UnavailableUnavailable Parts
#22 12-20551 WASHER, RUBBER - PLATE TO STBD. BRACKET (1,1,1,1 required per assembly)
WASHER            O NLA  
12-20551 WASHER O NLA
(more info)
    UnavailableUnavailable Parts
#23 12-20028 WASHER, COWL MOUNTING STUD (4,4,4,4 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
#24 20549A 1 FRONT STARBOARD BRACKET ASSEMBLY (1,1,1,1 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
#24 23884A 1 FRONT STARBOARD BRACKET ASSEMBLY (1,,, required per assembly)
Bracket Asy,NLA 23884A 1  
23884A 1OEM Part 23884A 1 - Bracket Assembly, NLA (more info) About Mercury Marine $8.00 $8.00 Add to shopping cart
3 in stock. Explain stock levels
#25 23-20528 BUSHING (1,1,1,1 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
#26 16-20550 STUD, COWL MOUNTING PLATE (1,1,1,1 required per assembly)
STUD              O NLA  
16-20550 STUD O NLA
(more info)
    UnavailableUnavailable Parts
#29 12-20346 WASHER, COWL MOUNTING STUD (2,2,2,2 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
4 in stock. Explain stock levels
#30 11-20361 NUT, COWL MOUNTING STUD (2,2,2,2 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
#33 20573A 1 FRONT PORT BRACKET ASSEMBLY (1,1,1,1 required per assembly)
Bracket Asy,NLA 20573A 1  
20573A 1OEM Part 20573A 1 - Bracket Assembly, NLA (more info) About Mercury Marine $5.50 $5.50 Add to shopping cart
9 in stock. Explain stock levels
#35 12-20546 WASHER, CRANKCASE TO CYLINDER BLOCK STUD (6,,, 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 (6,6,6,6 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