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Parts for MerCruiser 250 1977 Gear Housing Assembly

#- 1623-8951A 2 GEAR HOUSING (1 required per assembly)
GEAR HOUSING      O - Replaced by 1623-8951A19
 

This part has been superseded.

1623-8951A 2 - GEAR HOUSING O [ More info ]
Unavailable
Replaced by 1623-8951A19
GEAR CASE ASSY    O - Replaced by 1623-8951A23
 

This part has been superseded.

1623-8951A19 - GEAR CASE ASSY O [ More info ]
Unavailable
Replaced by 1623-8951A23
GEARCASE ASY COMP O - Replaced by 1623-8951A43
 

This part has been superseded.

1623-8951A23 - GEARCASE ASY COMP O [ More info ]
Unavailable
Replaced by 1623-8951A43
GEAR HOUSING ASSEMBLY 1623-8951A43
1623-8951A43

About Mercury Marine

OEM Part

1623-8951A43 - Gearcase Alpha [ More info ]

Add to shopping cart $2,128.57
Available to order: Usually ships within 8 days. Explain stock levels

Gear Housing Assy
18-2443

About Sierra Marine

OEM Match

18-2443 - Lower Assembly, [ More info ]

Add to shopping cart $2,238.00 $1,806.04
Available to order: Usually ships within 8 days. Explain stock levels

90-106-02 - SE106, LOWER (Replaces Mercruiser Alpha One)
90-106-02

Sterndrive Engineering

90-106-02 - SE106 Lower Unit Mercruiser Alpha One, Standard Rotation - Special Order - No Returns [ More info ]

Add to shopping cart $745.00 $745.00
10+ in stock. Explain stock levels

#1 1623-5356A 4 GEAR HOUSING (1 required per assembly)
GEAR HOUSING ASSEMBLY 1623-5356A 4
1623-5356A 4

About Mercury Marine

OEM Part

1623-5356A 4 - Gearcase Mc-i -Basic [ More info ]

Add to shopping cart $1,193.36 $1,163.52
10+ in stock. Explain stock levels

Lower Gear Housing
18-2402

About Sierra Marine

OEM Match

18-2402 - Housing, 1623-5356A4 [ More info ]

Add to shopping cart $1,348.72
2 in stock. Explain stock levels

#53 18-89212 COTTER PIN, CLUTCH ACTUATING SHAFT (1 required per assembly)
18469501 18-89212
 

About Mercury Marine

OEM Part

18-89212 - Cotter Pin Note: Must be ordered in multiples of 2 [ More info ]

Add to shopping cart $1.35
3 in stock. Explain stock levels

COTTER PIN 18-46950  1
 

About Mercury Marine

OEM Part

18-46950 1 - Cotter Pin [ More info ]

Add to shopping cart $3.10
6 in stock. Explain stock levels

#54 N.S.S. SLEEVE, ADJUSTING (1 required per assembly) REPLACED BY 19755A2
#60 76865 SHIFT CRANK (1 required per assembly)
8M2009865 76865
76865

About Mercury Marine

OEM Part

76865 - Shifter Crank [ More info ]

Add to shopping cart $50.00
10+ in stock. Explain stock levels

CRANK-SHIFTER 8M2009865
 

About Mercury Marine

OEM Part

8M2009865 - Shifter Crank [ More info ]

Add to shopping cart $78.59
Available to order: Usually ships within 8 days. Explain stock levels

Shift Crank
18-2130

About Sierra Marine

OEM Match

18-2130 - Shift Crank 76865 [ More info ]

Add to shopping cart $82.76 $66.58
1 in stock. Explain stock levels

#61 15-47397A 1 SHIM (AR required per assembly)
SHIM SET 15-47397A 1
15-47397A 1

About Mercury Marine

OEM Part

15-47397A 1 - Shim Set [ More info ]

Add to shopping cart $12.90 $8.72
10+ in stock. Explain stock levels

Shims
18-2285

About Sierra Marine

OEM Match

18-2285 - Shim 15-47397A1 [ More info ]

Add to shopping cart $18.12 $12.54
Available to order: Usually ships within 8 days. Explain stock levels

#62 43-92158A 1 FORWARD GEAR (1 required per assembly)
ORD 43- 96084A 4  O NLA
 

About Mercury Marine

OEM Part

ORD 43- 96084A 4 O NLA [ More info ]
Unavailable
#63 31-30895 ROLLER BEARING, FORWARD GEAR (1 required per assembly)
BEARING           O - Replaced by 31-30895T
31-30895

This part has been superseded.

31-30895 - BEARING O [ More info ]
Unavailable
Replaced by 31-30895T
BEARING Needle 31-30895T
31-30895T

About Mercury Marine

OEM Part

31-30895T - Bearing [ More info ]

Add to shopping cart $17.10 $14.65
Available to order: Usually ships within 8 days. Explain stock levels

Needle Roller Bearing
18-1157

About Sierra Marine

OEM Match

18-1157 - Bearing 31-30895 [ More info ]

Add to shopping cart $19.45 $15.07
8 in stock. Explain stock levels

#64 31-35928A 1 TAPERED ROLLER BEARING ASSEMBLY (1 required per assembly)
3135928T1 31-35928A 1
 

About Mercury Marine

OEM Part

31-35928A 1 - Bearing Set [ More info ]

Add to shopping cart $50.00
10+ in stock. Explain stock levels

BEARING ASSEMBLY Tapere 31-35928T 1
31-35928T 1

About Mercury Marine

OEM Part

31-35928T 1 - Bearing Set [ More info ]

Add to shopping cart $70.92 $51.06
8 in stock. Explain stock levels

Tapered Roller Bearing
18-1159

About Sierra Marine

OEM Match

18-1159 - Bearing 31-35928A1 [ More info ]

Add to shopping cart $78.43 $60.96
2 in stock. Explain stock levels

#65 52-66063 CLUTCH (1 required per assembly)
52824112 52-66063
52-66063

About Mercury Marine

OEM Part

52-66063 - Clutch [ More info ]

Add to shopping cart $80.00
10+ in stock. Explain stock levels

52853594 52-824112
52-824112

About Mercury Marine

OEM Part

52-824112 - Clutch [ More info ]

Add to shopping cart $100.00
5 in stock. Explain stock levels

52853594T 52-853594
52-853594

About Mercury Marine

OEM Part

52-853594 - Clutch [ More info ]

Add to shopping cart $100.00
1 in stock. Explain stock levels

CLUTCH 52-853594T
52-853594T

About Mercury Marine

OEM Part

52-853594T - Clutch [ More info ]

Add to shopping cart $214.83
1 in stock. Explain stock levels

Sliding Clutch
18-2202

About Sierra Marine

OEM Match

18-2202 - Clutch, 52-66063, 52-853 [ More info ]

Add to shopping cart $198.34
1 in stock. Explain stock levels

#66 17-30632 CROSS PIN (1 required per assembly)
178M0020941 17-30632
17-30632

About Mercury Marine

OEM Part

17-30632 - Pin - Cross - Priced Individually [ More info ]

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

PIN @3            O - Replaced by 17-8M0084681
17-8M0020941

This part has been superseded.

17-8M0020941 - PIN @3 O [ More info ]
Unavailable
Replaced by 17-8M0084681
178M0100263 17-8M0084681
17-8M0084681

About Mercury Marine

OEM Part

17-8M0084681 - Pin - Priced Individually [ More info ]

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

Cross Pin
18-2357

About Sierra Marine

OEM Match

18-2357 - Pin, 17-30632 [ More info ]

Add to shopping cart $3.49 $2.02
1 in stock. Explain stock levels

#67 24-30893 SPRING, RETAINER - CROSS PIN (1 required per assembly)
SPRING Note: must be ordered in multiples of 2 24-30893
24-30893

About Mercury Marine

OEM Part

24-30893 - Spring - Priced Individually [ More info ]

Add to shopping cart $1.90 $1.14
2 in stock. Explain stock levels

Spring, Clutch Cross Pin
18-2348

About Sierra Marine

OEM Match

18-2348-9 - Spring, 24-30893, 2PK [ More info ]

Add to shopping cart $5.45 $3.90
2 in stock. Explain stock levels

#68 44-66060 PROPELLER SHAFT (1 required per assembly)
44660603 44-66060
44-66060

About Mercury Marine

OEM Part

44-66060 - Prop Shaft [ More info ]

Add to shopping cart $180.00
5 in stock. Explain stock levels

PROPSHAFT         O - Replaced by 44-824110
 

This part has been superseded.

44-66060 3 - PROPSHAFT O [ More info ]
Unavailable
Replaced by 44-824110
PROPELLER SHAFT 44-824110
44-824110

About Mercury Marine

OEM Part

44-824110 - Prop Shaft [ More info ]

Add to shopping cart $541.67 $364.00
10+ in stock. Explain stock levels

Prop Shaft
18-2166

About Sierra Marine

OEM Match

18-2166 - Shaft 44-66060 [ More info ]

Add to shopping cart $639.66 $507.48
1 in stock. Explain stock levels

#69 43-61026 REVERSE GEAR (1 required per assembly)
4361026T 43-61026
43-61026

About Mercury Marine

OEM Part

43-61026 - Reverse Gear [ More info ]

Add to shopping cart $125.00
10+ in stock. Explain stock levels

REVERSE GEAR,NLA 43-61026T
43-61026T

About Mercury Marine

OEM Part

43-61026T - Reverse Gear [ More info ]

Add to shopping cart $125.00
10+ in stock. Explain stock levels

#70 35915 THRUST RING, BEARING CARRIER (1 required per assembly)
RING              O
35915

About Mercury Marine

OEM Part

RING O [ More info ]
Unavailable
Parts manual  Manual 392301 Parts Catalog-1981 E/J 9.9, 15HP $19.95 $19.95 Add to shopping cart
Thrust Ring Bearing
18-3759

About Sierra Marine

OEM Match

18-3759 - Thrust Ring, 35915 [ More info ]

Add to shopping cart $23.32
Available to order: Usually ships within 8 days. Explain stock levels

#71 30-17927 BALL BEARING, REVERSE GEAR (1 required per assembly)
BALL BEARING      O - Replaced by 30-88957A 1
 

This part has been superseded.

30-17927 - BALL BEARING O [ More info ]
Unavailable
Replaced by 30-88957A 1
3088957 30-88957A 1
30-88957A 1

About Mercury Marine

OEM Part

30-88957A 1 - Ball Bearing [ More info ]

Add to shopping cart $28.00
4 in stock. Explain stock levels

BEARING-BALL      O - Replaced by 30-88957T
30-88957

This part has been superseded.

30-88957 - BEARING-BALL O [ More info ]
Unavailable
Replaced by 30-88957T
BEARING Ball 30-88957T
30-88957T

About Mercury Marine

OEM Part

30-88957T - Ball Bearing [ More info ]

Add to shopping cart $54.40
2 in stock. Explain stock levels

Ball Bearing
18-1155

About Sierra Marine

OEM Match

18-1155 - Bearing 30-88957T [ More info ]

Add to shopping cart $48.99 $38.75
3 in stock. Explain stock levels

#72 15-31535A 1 SHIM (AR required per assembly)
SHIM SET 15-31535A 1
 

About Mercury Marine

OEM Part

15-31535A 1 - Shim Set [ More info ]

Add to shopping cart $15.70 $10.60
10+ in stock. Explain stock levels

Shims
18-2284

About Sierra Marine

OEM Match

18-2284 - Shim 15-31535A1 [ More info ]

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

#73 25-31534 O-RING, BEARING CARRIER (1 required per assembly)
O-RING 25-31534
25-31534

About Mercury Marine

OEM Part

25-31534 - O-Ring Note: - Priced Individually [ More info ]

Add to shopping cart $4.40
1 in stock. Explain stock levels

O-Ring
18-7159

About Sierra Marine

OEM Match

18-7159-9 - (PK5) O-Ring 25-31534 [ More info ]

Add to shopping cart $19.95 $13.63
10+ in stock. Explain stock levels

#74 73020A14 BEARING CARRIER ASSEMBLY (1 required per assembly)
CARRIER ASSEMBLY Be 73020A14
73020A14

About Mercury Marine

OEM Part

73020A14 - Carrier Assembly [ More info ]

Add to shopping cart $125.83
10 in stock. Explain stock levels

Bearing Carrier
18-2191

About Sierra Marine

OEM Match

18-2191 - Carrier, 73020A14 [ More info ]

Add to shopping cart $113.49 $92.78
2 in stock. Explain stock levels

#75 31-30956 ROLLER BEARING (1 required per assembly)
BEARING           O - Replaced by 31-30956T
31-30956

This part has been superseded.

31-30956 - BEARING O [ More info ]
Unavailable
Replaced by 31-30956T
BEARING Needle 31-30956T
31-30956T

About Mercury Marine

OEM Part

31-30956T - Bearing [ More info ]

Add to shopping cart $17.30 $14.81
7 in stock. Explain stock levels

Needle Roller Bearing
18-1158

About Sierra Marine

OEM Match

18-1158 - Bearing 31-30956, 387247 [ More info ]

Add to shopping cart $13.74 $10.44
10 in stock. Explain stock levels

#76 26-76868 OIL SEAL (2 required per assembly)
SEAL Note: must be ordered in multiples of 5 26-76868
26-76868

About Mercury Marine

OEM Part

26-76868 - Seal - Priced Individually [ More info ]

Add to shopping cart $13.90
10+ in stock. Explain stock levels

Oil Seal
18-2002

About Sierra Marine

OEM Match

18-2002 - Seal 26-76868, 320862 [ More info ]

Add to shopping cart $10.49 $7.91
10+ in stock. Explain stock levels

#77 28-30281 KEY (1 required per assembly)
KEY Note: must be ordered in multiples of 5 28-30281
28-30281

About Mercury Marine

OEM Part

28-30281 - Key - Priced Individually [ More info ]

Add to shopping cart $0.90
5 in stock. Explain stock levels

#78 14-79447 TAB WASHER, GEAR HOUSING COVER (1 required per assembly)
TAB WASHER 14-79447
14-79447

About Mercury Marine

OEM Part

14-79447 - Tab Washer - Priced Individually [ More info ]

Add to shopping cart $9.50 $6.42
10+ in stock. Explain stock levels

TAB WASHER
18-2299

About Sierra Marine

OEM Match

18-2299 - Shim 14-79447 [ More info ]

Add to shopping cart $9.80 $7.20
1 in stock. Explain stock levels

#79 79448 COVER,GEAR HOUSING (1 required per assembly)
8M2011027 79448
79448

About Mercury Marine

OEM Part

79448 - Retainer [ More info ]

Add to shopping cart $18.00
3 in stock. Explain stock levels

RETAINER 8M2011027
8M2011027

About Mercury Marine

OEM Part

8M2011027 - Bearing Car Retaining Nut [ More info ]

Add to shopping cart $27.59
Available to order: Usually ships within 8 days. Explain stock levels

Spanner Nut
18-3751

About Sierra Marine

OEM Match

18-3751 - Nut, 79448 [ More info ]

Add to shopping cart $23.99 $18.73
3 in stock. Explain stock levels

#80 56292A 2 THRUST HUB AND WASHER ASSEMBLY (1 required per assembly)
56292A4 56292A 2
56292A 2

About Mercury Marine

OEM Part

56292A 2 - Thrust Washer [ More info ]

Add to shopping cart $25.00
10+ in stock. Explain stock levels

56292Q04 56292A 4
 

About Mercury Marine

OEM Part

56292A 4 - Thrust Washer Assembly [ More info ]

Add to shopping cart $30.00
3 in stock. Explain stock levels

THRUSTWASHERNote: must be ordered in multiples of 2 56292Q04
56292Q04

About Mercury Marine

OEM Part

56292Q04 - Thrust Washer - Priced Individually [ More info ]

Add to shopping cart $70.73
Available to order: Usually ships within 8 days. Explain stock levels

#81 12-35965 WASHER, CUPPED (1 required per assembly)
WASHER,NLA 12-35965
 

About Mercury Marine

OEM Part

12-35965 - Washer, NLA [ More info ]

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

#82 12-31211A 2 WASHER,SPLINED - PROPELLER SHAFT (1 required per assembly)
THRUST WASHER KIT O - Replaced by 12-31211A 3
12-31211A 2

This part has been superseded.

12-31211A 2 - THRUST WASHER KIT O [ More info ]
Unavailable
Replaced by 12-31211A 3
WASHER            O - Replaced by 12-31211Q03
 

This part has been superseded.

12-31211A 3 - WASHER O [ More info ]
Unavailable
Replaced by 12-31211Q03
WASHER Note: must be ordered in multiples of 2 12-31211Q03
12-31211Q03

About Mercury Marine

OEM Part

12-31211Q03 - Washer - Priced Individually [ More info ]

Add to shopping cart $10.39
Available to order: Usually ships within 8 days. Explain stock levels

Brass Castle Washer INMercIN
18-3714

About Sierra Marine

OEM Match

18-3714 - Washer, 12-31211A2 [ More info ]

Add to shopping cart $8.23 $6.70
10+ in stock. Explain stock levels

WASHER Note: must be ordered in multiples of 2   12 31211K03
12 31211K03

About Mercury Marine

OEM Part

12-31211K03 - Washer - Priced Individually [ More info ]

Add to shopping cart $10.39
Available to order: Usually ships within 8 days. Explain stock levels

#83 14-31210 TAB WASHER, PROPELLER NUT (1 required per assembly)
WASHER-TAB @10    O - Replaced by 14-816629
 

This part has been superseded.

14-31210 - WASHER-TAB @10 O [ More info ]
Unavailable
Replaced by 14-816629
14816629Q 14-816629
14-816629

About Mercury Marine

OEM Part

14-816629 - Tab Washer [ More info ]

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

TAB WASHER Note: must be ordered in multiples of 2 14-816629Q
14-816629Q

About Mercury Marine

OEM Part

14-816629Q - Tab Washer - Priced Individually [ More info ]

Add to shopping cart $4.14
1 in stock. Explain stock levels

Tabwasher
18-3200

About Sierra Marine

OEM Match

18-3200-9 - Washer, 14-816629, 10PK [ More info ]

Add to shopping cart $14.90 $12.10
3 in stock. Explain stock levels

TAB WASHER Note: must be ordered in multiples of 2   14816629K
14816629K

About Mercury Marine

OEM Part

14-816629K - Tab Washer - Priced Individually [ More info ]

Add to shopping cart $4.14
Available to order: Usually ships within 8 days. Explain stock levels

#84 11-52707A 1 PROPELLER NUT (1 required per assembly)
NUT KIT-PROP      O - Replaced by 11-52707Q 1
11-52707A 1

This part has been superseded.

11-52707A 1 - NUT KIT-PROP O [ More info ]
Unavailable
Replaced by 11-52707Q 1
PROP NUT KIT (.750-16) 11-52707Q 1
11-52707Q 1

About Mercury Marine

OEM Part

11-52707Q 1 - Prop Nut Kit - Priced Individually [ More info ]

Add to shopping cart $11.48
Available to order: Usually ships within 8 days. Explain stock levels

Prop Nut & Tabwasher Kit
18-3701

About Sierra Marine

OEM Match

18-3701 - Nut Kit, 11-52707A1 [ More info ]

Add to shopping cart $12.49 $9.27
10+ in stock. Explain stock levels

Prop Nut
18-3700

About Sierra Marine

OEM Match

18-3700 - Nut 11-52707 [ More info ]

Add to shopping cart $12.49 $9.80
10+ in stock. Explain stock levels

PROP NUT KIT (.750-16)   11 52707T 1
11 52707T 1

About Mercury Marine

OEM Part

11-52707T 1 - Prop Nut Kit - Priced Individually [ More info ]

Add to shopping cart $11.48
1 in stock. Explain stock levels

#85 31640A 1 TRIM TAB ASSEMBLY (1 required per assembly)
TRIM TAB ASSY     O - Replaced by -31640  3
 

This part has been superseded.

31640A 1 - TRIM TAB ASSY O [ More info ]
Unavailable
Replaced by -31640 3
316404 31640  3
 

About Mercury Marine

OEM Part

31640 3 - TRIM TAB [ More info ]

Add to shopping cart $11.00
1 in stock. Explain stock levels

ANODE/TRIM TAB    O - Replaced by 97-31640Q 4
31640  4

This part has been superseded.

31640 4 - ANODE/TRIM TAB O [ More info ]
Unavailable
Replaced by 97-31640Q 4
TRIM TAB 97-31640Q 4
97-31640Q 4

About Mercury Marine

OEM Part

97-31640Q4 - Anode/Trim Tab [ More info ]

Add to shopping cart $14.49
Available to order: Usually ships within 8 days. Explain stock levels

Anode(Magnesium)
18-6241

About Sierra Marine

OEM Match

18-6241 - Trim Tab Anode, Magnesium 31640 [ More info ]

Add to shopping cart $13.49 $11.03
10+ in stock. Explain stock levels

Anode, Aluminum
18-6011A

About Sierra Marine

OEM Match

18-6011A - Trim Tab Anode, Aluminum [ More info ]

Add to shopping cart $12.99 $10.49
1 in stock. Explain stock levels

Trim Tab
18-6011

About Sierra Marine

OEM Match

18-6011 - Trim Tab, Zinc, 31640A1 [ More info ]

Add to shopping cart $13.49 $10.15
10+ in stock. Explain stock levels

ANODE BULK-25 PCS   978M0059338
978M0059338

About Mercury Marine

OEM Part

97-8M0059338 - Anode BULK-25 PC 31640Q 4 QS [ More info ]

Add to shopping cart $272.83
Available to order: Usually ships within 8 days. Explain stock levels

ANODE/TRIM TAB   97 31640T 4
97 31640T 4

About Mercury Marine

OEM Part

97-31640T 4 - Trim Tab Anode [ More info ]

Add to shopping cart $14.49
Available to order: Usually ships within 8 days. Explain stock levels

#86 10-32470 SCREW, TRIM TAB TO GEAR HOUSING (1-3/4") (1 required per assembly)
SCREW (.437-14 x 1.75) 10-32470
10-32470

About Mercury Marine

OEM Part

10-32470 - Screw - Priced Individually [ More info ]

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

Anode Mounting Bolt
18-6245

About Sierra Marine

OEM Match

18-6245 - Screw, 10-32470 [ More info ]

Add to shopping cart $3.49 $2.93
10+ in stock. Explain stock levels

#87 10-30206 SCREW, GEAR HOUSING TO DRIVE SHAFT HOUSING (1") (1 required per assembly)
SCREW (.375-16 x 1.00) 10-30206
10-30206

About Mercury Marine

OEM Part

10-30206 - Screw - Priced Individually [ More info ]

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

Screw, L/U Mounting. D1772
18-2361

About Sierra Marine

OEM Match

18-2361-9 - Screw, 10-30206, 2PK [ More info ]

Add to shopping cart $5.98
1 in stock. Explain stock levels

#88 11-34933 NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING STUD) (2 required per assembly)
NUT (.437-20) Stainless 11-34933
11-34933

About Mercury Marine

OEM Part

11-34933 - Nut - Priced Individually [ More info ]

Add to shopping cart $3.90
10+ in stock. Explain stock levels

S.S. Steel Locknut
18-3721

About Sierra Marine

OEM Match

18-3721-9 - Lock Nut, 11-34933, 5PK [ More info ]

Add to shopping cart $14.95 $10.17
10+ in stock. Explain stock levels