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Parts for Mercury Marine Model 40 4 HP (1 Cylinder) Cylinder Block & Crankcase Assembly

#1 843-4744A 3 CYLINDER BLOCK AND CRANKCASE ASSEMBLY (1 required per assembly)
843-4744A 3 - CYLINDER BLOCK    O - Replaced by 843-5697A 3
 

This part has been superseded.

843-4744A 3 - 843-4744A 3 - CYLINDER BLOCK O [ More info ]
Unavailable
Replaced by 843-5697A 3
8436423A3 843-5697A 3
 

About Mercury Marine

OEM Part

843-5697A 3 - Cyinder Block [ More info ]

Add to shopping cart $111.35
1 in stock. Explain stock levels

843-6423A 3 - CYLINDER BLOCK    O - Replaced by 843-7464A 2
 

This part has been superseded.

843-6423A 3 - 843-6423A 3 - CYLINDER BLOCK O [ More info ]
Unavailable
Replaced by 843-7464A 2
843-7464A 2 - CYLINDER BLOCK    O - Replaced by 843-8694A 3
 

This part has been superseded.

843-7464A 2 - 843-7464A 2 - CYLINDER BLOCK O [ More info ]
Unavailable
Replaced by 843-8694A 3
843-8694A 3 - CYLINDER BLOCK    O NLA
843-8694A 3

About Mercury Marine

OEM Part

843-8694A 3 - CYLINDER BLOCK O NLA [ More info ]
Unavailable
#2 16-66021 STUD, SYLINDER BLOCK AND CRANKCASE TO DRIVE SHAFT HOUSING (6 required per assembly)
STUD,NLA 16-66021
 

About Mercury Marine

OEM Part

16-66021 - Stud, NLA [ More info ]

Add to shopping cart $8.50
10+ in stock. Explain stock levels

#3 16-66020 STUD, CARBURETOR MOUNTING (2 required per assembly)
STUD,NLA 16-66020
 

About Mercury Marine

OEM Part

16-66020 - STUD,NLA [ More info ]

Add to shopping cart $4.00
4 in stock. Explain stock levels

#4 17-46912 PIN, DOWEL - CRANKCASE TO CYLINDER BLOCK (2 required per assembly)
1785500 17-46912
 

About Mercury Marine

OEM Part

17-46912 - Pin -Dowel [ More info ]

Add to shopping cart $0.50
10+ in stock. Explain stock levels

178M0084726 17-85500
 

About Mercury Marine

OEM Part

17-85500 - Pin -Dowel [ More info ]

Add to shopping cart $3.00
10+ in stock. Explain stock levels

PIN Dowel 17-8M0084726
 

About Mercury Marine

OEM Part

178M0084726 - Pin - Dowel [ More info ]

Add to shopping cart $3.60
Available to order: Usually ships within 8 days. Explain stock levels

#5 22-62035A 3 ELBOW ASSEMBLY, BLEED DRAIN (1 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
22-62035A 3 - FITTING ASSY      O - Replaced by 22-65350A 1
 

This part has been superseded.

22-62035A 3 - 22-62035A 3 - FITTING ASSY O [ More info ]
Unavailable
Replaced by 22-65350A 1
22-65350A 1 - CONNECTOR ASSY    O - Replaced by 21-64871A 2
 

This part has been superseded.

22-65350A 1 - 22-65350A 1 - CONNECTOR ASSY O [ More info ]
Unavailable
Replaced by 21-64871A 2
VALVE ASSY-CHECK,NLA 21-64871A 2
21-64871A 2

About Mercury Marine

OEM Part

21-64871A 2 - Check Valve Assembly, NLA [ More info ]

Add to shopping cart $22.00
10+ in stock. Explain stock levels

#6 21-56011A 2 CHECK VALVE ASSEMBLY (1 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
2142657A1 21-56011A 2
 

About Mercury Marine

OEM Part

21-56011A 2 - Check Valve Assembly [ More info ]

Add to shopping cart $1.20
8 in stock. Explain stock levels

2142657A3 21-42657A 1
 

About Mercury Marine

OEM Part

21-42657A 1 - Check Valve Assembly [ More info ]

Add to shopping cart $3.00
7 in stock. Explain stock levels

CHECK VALVE 21-42657A 3
 

About Mercury Marine

OEM Part

21-42657A 3 - Check Valve Assembly [ More info ]

Add to shopping cart $4.80
2 in stock. Explain stock levels

#5 21-64871A 2 FITTING ASSEMBLY, BLEED DRAIN (1 required per assembly) UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
#7 32-54936 HOSE, BLEED DRAIN (7 1/2") (1 required per assembly)
32-54936 - HOSE              O - Replaced by 32-54935 76
 

This part has been superseded.

32-54936 - 32-54936 - HOSE O [ More info ]
Unavailable
Replaced by 32-54935 76
32-54935 76 - TUBE              O - Replaced by 32-54935 79
 

This part has been superseded.

32-54935 76 - 32-54935 76 - TUBE O [ More info ]
Unavailable
Replaced by 32-54935 79
32-54935 79 - HOSE              O - Replaced by 32-99387 79
 

This part has been superseded.

32-54935 79 - 32-54935 79 - HOSE O [ More info ]
Unavailable
Replaced by 32-99387 79
HOSE 32-99387 79
32-99387 79

About Mercury Marine

OEM Part

32-99387 79 - Hose -27 Inch [ More info ]

Add to shopping cart $10.60
8 in stock. Explain stock levels

#8 54-56223 CLAMP, BLEED HOSE ATTACHING (2 required per assembly)
CLAMP,NLA 54-56223
 

About Mercury Marine

OEM Part

54-56223 - Clamp, NLA [ More info ]

Add to shopping cart $4.00
10+ in stock. Explain stock levels

#9 22-62034 ELBOW, BLEED DRAIN (1 required per assembly)
22-62034 - ELBOW             O - Replaced by 22-78916
 

This part has been superseded.

22-62034 - 22-62034 - ELBOW O [ More info ]
Unavailable
Replaced by 22-78916
ELBOW,NLA 22-78916
 

About Mercury Marine

OEM Part

22-78916 - Elbow, NLA [ More info ]

Add to shopping cart $15.00
10+ in stock. Explain stock levels

#10 22-25885 ELBOW, 90 - 1/8' MALE (TELL TALE) (1 required per assembly)
2299664 22-25885
 

About Mercury Marine

OEM Part

22-25885 - Elbow - Priced Individually [ More info ]

Add to shopping cart $1.50
5 in stock. Explain stock levels

22996641 22-99664
 

About Mercury Marine

OEM Part

22-99664 - Elbow [ More info ]

Add to shopping cart $1.00
6 in stock. Explain stock levels

22-99664  1 - ELBOW             O - Replaced by 22-99664  2
 

This part has been superseded.

22-99664 1 - 22-99664 1 - ELBOW O [ More info ]
Unavailable
Replaced by 22-99664 2
FITTING Elbow 90 Degree 22-99664  2
22-99664  2

About Mercury Marine

OEM Part

22-99664 2 - Elbow [ More info ]

Add to shopping cart $1.90
6 in stock. Explain stock levels

#11 10-24624 SCREW, CRANKCASE TO CYLINDER BLOCK (1 3/4") (2 required per assembly)
SCREW,NLA 10-24624
 

About Mercury Marine

OEM Part

10-24624 - Screw, NLA [ More info ]

Add to shopping cart $2.00
6 in stock. Explain stock levels

#12 10-31294 SCREW, CRANKCASE TO CYLINDER BLOCK (1") (8 required per assembly)
10-31294 - SCREW             O - Replaced by 10-64278
 

This part has been superseded.

10-31294 - 10-31294 - SCREW O [ More info ]
Unavailable
Replaced by 10-64278
SCREW,NLA 10-64278
10-64278

About Mercury Marine

OEM Part

10-64278 - Screw, NLA [ More info ]

Add to shopping cart $1.80
10+ in stock. Explain stock levels

#13 11-46887 NUT, CRANKCASE FASTENING SCREW (10 required per assembly)
1120184 11-46887
 

About Mercury Marine

OEM Part

11-46887 - Nut [ More info ]

Add to shopping cart $0.30
4 in stock. Explain stock levels

NUT (1/4-28X7/32) 11-20184
11-20184

About Mercury Marine

OEM Part

11-20184 - Nut - Priced Individually [ More info ]

Add to shopping cart $1.30
3 in stock. Explain stock levels

#14 35728 REED BLOCK (1 required per assembly)
35728 - REED BLOCK        O - Replaced by -70726
 

This part has been superseded.

35728 - 35728 - REED BLOCK O [ More info ]
Unavailable
Replaced by -70726
REED BLOCK,NLA 70726
 

About Mercury Marine

OEM Part

70726 - REED BLOCK,NLA [ More info ]

Add to shopping cart $45.00
1 in stock. Explain stock levels

#15 34-35836 REED, INLET VALVE (2 required per assembly)
REED Note: must be ordered in multiples of 2 34-35836
 

About Mercury Marine

OEM Part

34-35836 - Reed - Priced Individually [ More info ]

Add to shopping cart $8.00
Available to order: Usually ships within 8 days. Explain stock levels

#16 34-22215 RETAINER, REED (2 required per assembly)
REED STOP,NLA 34-22215
 

About Mercury Marine

OEM Part

34-22215 - Reed Stop, NLA [ More info ]

Add to shopping cart $10.00
6 in stock. Explain stock levels

#17 10-28430 SCREW, REED AND RETAINER TO BLOCK (1/4") (4 required per assembly)
SCREW (#6-32 x .25) 10-28430
10-28430

About Mercury Marine

OEM Part

10-28430 - Screw [ More info ]

Add to shopping cart $0.80
Available to order: Usually ships within 8 days. Explain stock levels

#18 27-35739 GASKET, REED BLOCK TO CRANKCASE (1 required per assembly)
27357391 27-35739
 

About Mercury Marine

OEM Part

27-35739 - Gasket - Priced Individually [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

GASKET,NLA 27-35739  1
 

About Mercury Marine

OEM Part

27-35739 1 - Gasket, NLA [ More info ]

Add to shopping cart $3.75
10+ in stock. Explain stock levels

#19 30-20861 BEARING, BALL - CRANKCASE (LOWER) (1 required per assembly)
30-20861 - BALL BEARING@2    O - Replaced by 30-72961
 

This part has been superseded.

30-20861 - 30-20861 - BALL [email protected] O [ More info ]
Unavailable
Replaced by 30-72961
BEARING Ball 30-72961
30-72961

About Mercury Marine

OEM Part

30-72961 - Ball Bearing [ More info ]

Add to shopping cart $20.80 $17.81
Available to order: Usually ships within 8 days. Explain stock levels

Bearing, Ball
18-1398

About Sierra Marine

OEM Match

18-1398 - Bearing, 30-72961 [ More info ]

Add to shopping cart $16.99 $15.89
1 in stock. Explain stock levels

#20 26-56397 OIL SEAL, CRANKCASE (LOWER) (1 required per assembly)
SEAL,NLA 26-56397
26-56397

About Mercury Marine

OEM Part

26-56397 - Seal, NLA [ More info ]

Add to shopping cart $23.50
10+ in stock. Explain stock levels

Oil Seal
18-0527

About Sierra Marine

OEM Match

18-0527 - Seal, 26-56397 [ More info ]

Add to shopping cart $19.99 $19.84
Available to order: Usually ships within 8 days. Explain stock levels

#21 15-31412A 1 SHIM ASSEMBLY, UPPER HOUSING TO BLOCK (.002-3-5-10) (AR required per assembly)
SHIM SET,NLA 15-31412A 1
 

About Mercury Marine

OEM Part

15-31412A 1 - Shim Set, NLA [ More info ]

Add to shopping cart $10.50
10+ in stock. Explain stock levels

#22 1132-4471A 1 BEARING HOUSING ASSEMBLY, UPPER (1 required per assembly)
1132-4471A 1 - HOUSING ASSY      O - Replaced by 1132-6352A 1
 

This part has been superseded.

1132-4471A 1 - 1132-4471A 1 - HOUSING ASSY O [ More info ]
Unavailable
Replaced by 1132-6352A 1
1132-6352A 1 - HOUSING ASSEMBLY  O NLA
 

About Mercury Marine

OEM Part

1132-6352A 1 - HOUSING ASSEMBLY O NLA [ More info ]
Unavailable
#24 31-31410 BEARING, ROLLER - UPPER BEARING HOUSING (1 required per assembly)
BEARING,NLA 31-31410
31-31410

About Mercury Marine

OEM Part

31-31410 - Bearing, NLA [ More info ]

Add to shopping cart $19.00
10+ in stock. Explain stock levels

#25 26-31411 OIL SEAL, UPPER BEARING HOUSING (1 required per assembly)
SEAL ,NLA 26-31411
26-31411

About Mercury Marine

OEM Part

26-31411 - Seal, NLA [ More info ]

Add to shopping cart $26.00
10+ in stock. Explain stock levels

#26 25-20863 "O" RING, UPPER BEARING HOUSING (1 required per assembly)
O-RING 25-20863
25-20863

About Mercury Marine

OEM Part

25-20863 - O-Ring - Priced Individually [ More info ]

Add to shopping cart $2.50
10+ in stock. Explain stock levels

O-Ring
18-7152

About Sierra Marine

OEM Match

18-7152-9 - O-Ring 5 Pack 25-20863 [ More info ]

Add to shopping cart $14.95 $8.34
1 in stock. Explain stock levels

#27 54-34598 CLAMP, HOLD DOWN RING (2 required per assembly)
CLIP,NLA 54-34598
54-34598

About Mercury Marine

OEM Part

54-34598 - Clip, NLA [ More info ]

Add to shopping cart $11.00
10+ in stock. Explain stock levels

#28 10-36205 SCREW, HOLD DOWN RING CLAMP TO BEARING HOUSING (9/16") (4 required per assembly)
SCREW,NLA 10-36205
 

About Mercury Marine

OEM Part

10-36205 - Screw, NLA [ More info ]

Add to shopping cart $1.25
10+ in stock. Explain stock levels

#29 24-34731 SPRING, HOLD DOWN RING CLAMP (4 required per assembly)
SPRING,NLA 24-34731
 

About Mercury Marine

OEM Part

24-34731 - Spring, NLA [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

#30 10-39002 SCREW, UPPER BEARING HOUSING (#12-24 X 1/2) (4 required per assembly)
SCREW,NLA 10-39002
 

About Mercury Marine

OEM Part

10-39002 - Screw, NLA [ More info ]

Add to shopping cart $1.50
5 in stock. Explain stock levels

#31 35658 COVER, TRANSFER PORT (1 required per assembly)
COVER,NLA 35658
 

About Mercury Marine

OEM Part

35658 - Cover, NLA [ More info ]

Add to shopping cart $7.00
1 in stock. Explain stock levels

#32 27-35657 GASKET, TRANSFER PORT COVER (1 required per assembly)
GASKET,NLA 27-35657
 

About Mercury Marine

OEM Part

27-35657 - Gasket - Priced Individually [ More info ]

Add to shopping cart $4.50
10+ in stock. Explain stock levels

#33 10-20720 SCREW, TRANSFER PORT COVER TO CYLINDER BLOCK (5/8") (2 required per assembly)
SCREW,NLA 10-20720
 

About Mercury Marine

OEM Part

10-20720 - Screw, NLA [ More info ]

Add to shopping cart $1.25
10+ in stock. Explain stock levels

#34 1016-4776 COVER, CYLINDER BLOCK (1 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
10165230A1 1016-4776
 

About Mercury Marine

OEM Part

1016-4776 - Cover [ More info ]

Add to shopping cart $5.55
1 in stock. Explain stock levels

1016-5230A 1 - COVER ASSY        O - Replaced by 1016-7070A 1
 

This part has been superseded.

1016-5230A 1 - 1016-5230A 1 - COVER ASSY O [ More info ]
Unavailable
Replaced by 1016-7070A 1
1016-7070A 1 - COVER ASSEMBLY    O NLA
 

About Mercury Marine

OEM Part

1016-7070A 1 - COVER ASSEMBLY O NLA [ More info ]
Unavailable
#35 31014 MOUNT, RUBBER - COVER TO TOP COWL (2 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
MOUNT,NLA 31014
31014

About Mercury Marine

OEM Part

31014 - Mount, NLA [ More info ]

Add to shopping cart $23.50
1 in stock. Explain stock levels

#36 13-26992 LOCKWASHER, RUBBER MOUNT (2 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
LOCKWASHER (.250) Stain 13-26992
 

About Mercury Marine

OEM Part

13-26992 - LockWasher - Priced Individually [ More info ]

Add to shopping cart $0.80
10+ in stock. Explain stock levels

#37 11-20088 NUT, RUBBER MOUNT TO COVER (2 required per assembly) UNITED STATES 3764824 AND BELOW AUSTRALIA 8014364 AND BELOW BELGIUM 9037733 AND BELOW CANADA 7025897 AND BELOW
NUT,NLA 11-20088
 

About Mercury Marine

OEM Part

11-20088 - Nut, NLA [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

#34 1016-5230A 1 COVER ASSEMBLY, CYLINDER BLOCK (1 required per assembly) UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
#35 66019 MOUNT, RUBBER - COVER TO TOP COWL (2 required per assembly) UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
MOUNT,NLA 66019
66019

About Mercury Marine

OEM Part

66019 - Mount, NLA [ More info ]

Add to shopping cart $14.00
10+ in stock. Explain stock levels

#36 13-20202 LOCKWASHER, RUBBER MOUNT (2 required per assembly) UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
LOCKWASHER,NLA 13-20202
 

About Mercury Marine

OEM Part

13-20202 - LockWasher, NLA [ More info ]

Add to shopping cart $1.50
10+ in stock. Explain stock levels

#37 11-20083 NUT, RUBBER MOUNT TO COVER (2 required per assembly) UNITED STATES 3529446 THRU 3764824 AUSTRALIA 8005740 THRU 8014364 BELGIUM 9012109 THRU 9037733 CANADA 7011058 THRU 7025897
1122053 11-20083
 

About Mercury Marine

OEM Part

11-20083 - Nut - Priced Individually [ More info ]

Add to shopping cart $0.80
10+ in stock. Explain stock levels

NUT (.312-24) 11-22053
11-22053

About Mercury Marine

OEM Part

11-22053 - Nut - Priced Individually [ More info ]

Add to shopping cart $2.00
10+ in stock. Explain stock levels

#38 27-35735 GASKET, COVER TO CYLINDER BLOCK (1 required per assembly)
27-35735 - GASKET @3         O - Replaced by 27-78140
 

This part has been superseded.

27-35735 - 27-35735 - GASKET @3 O [ More info ]
Unavailable
Replaced by 27-78140
27-78140 - GASKET            O - Replaced by 27-41615
27-78140

This part has been superseded.

27-78140 - 27-78140 - GASKET O [ More info ]
Unavailable
Replaced by 27-41615
27416151 27-41615
27-41615

About Mercury Marine

OEM Part

27-41615 - Gasket [ More info ]

Add to shopping cart $1.25
1 in stock. Explain stock levels

GASKET 27-41615  1
27-41615  1

About Mercury Marine

OEM Part

27-41615 1 - Gasket [ More info ]

Add to shopping cart $5.60
5 in stock. Explain stock levels

#39 10-21091 SCREW, SYLINDER BLOCK COVER TO CYLINDER BLOCK (1 1/4") (4 required per assembly)
SCREW,NLA 10-21091
 

About Mercury Marine

OEM Part

10-21091 - Screw, NLA [ More info ]

Add to shopping cart $1.50
10+ in stock. Explain stock levels

#41 27-46232 GASKET, SYLINDER BLOCK TO BAFFLE PLATE (1 required per assembly)
27-46232 - GASKET @3         O - Replaced by 27-78139
 

This part has been superseded.

27-46232 - 27-46232 - GASKET @3 O [ More info ]
Unavailable
Replaced by 27-78139
2741614 27-78139
27-78139

About Mercury Marine

OEM Part

27-78139 - Gasket - Priced Individually [ More info ]

Add to shopping cart $3.00
3 in stock. Explain stock levels

27416141 27-41614
27-41614

About Mercury Marine

OEM Part

27-41614 - Gasket , Priced Individually [ More info ]

Add to shopping cart $1.80
2 in stock. Explain stock levels

GASKET Note: must be ordered in multiples of 2 27-41614  1
27-41614  1

About Mercury Marine

OEM Part

27-41614 1 - Gasket - Priced Individually [ More info ]

Add to shopping cart $6.40
3 in stock. Explain stock levels

#42 46234 PLATE, BAFFLET - EXHAUST MANIFOLD (1 required per assembly)
PLATE,NLA 46234
46234

About Mercury Marine

OEM Part

46234 - Baffle Plate [ More info ]

Add to shopping cart $23.50
10+ in stock. Explain stock levels

#44 46171 COVER, EXHAUST MANIFOLD (1 required per assembly)
46171 - COVER             O NLA
 

About Mercury Marine

OEM Part

46171 - COVER O NLA [ More info ]
Unavailable
#45 10-28636 SCREW, PLATE/MANIFOLD COVER TO BLOCK (3/4") (6 required per assembly) UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
SCREW (.250-20 x .750) 10-28636
10-28636

About Mercury Marine

OEM Part

10-28636 - Screw - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ in stock. Explain stock levels

#45 10-49668 SCREW, PLATE/MANIFOLD COVER TO BLOCK (3/4") (6 required per assembly) UNITED STATES 3529445 AND BELOW AUSTRALIA 8005739 AND BELOW BELGIUM 9012108 AND BELOW CANADA 7011057 AND BELOW
SCREW (.250-20 x .750) 10-49668
10-49668

About Mercury Marine

OEM Part

10-49668 - Screw - Priced Individually [ More info ]

Add to shopping cart $0.80
10+ in stock. Explain stock levels