Logo

Parts for MerCruiser Alpha One (Gen. II) 1998 & Up Gear Housing (Driveshaft) (Counter Rotation)

# 26-816575A 3 SEAL KIT, Gear Housing (AR required per assembly)
SEAL KIT Gear Housing 26-816575A 3
26-816575A 3

About Mercury Marine

OEM Part

26-816575A 3 - Seal Kit [ More info ]

Add to shopping cart $107.92
1 In Stock.

SEAL KIT
18-2646-1

About Sierra Marine

OEM Match

18-2646-1 - Seal Kit, 26-816575A3 [ More info ]

Add to shopping cart $88.58
10+ In Stock.

# 817275A 4 REBUILD KIT, Water Pump (AR required per assembly)
817275A 4 - REBUILD KIT Water  - Replaced by -817275Q 4
817275A 4

817275A 4 - Water Pump Rebuild Kit [ More info ]
Unavailable
817275Q 4 - REBUILD KIT-W/P    - Replaced by -817275Q05
817275Q 4

817275Q 4 - Water Pump Rebuild Kit [ More info ]
Unavailable
REBUILD KIT-W/P 817275Q05
817275Q05

About Mercury Marine

OEM Part

817275Q05 - Water Pump Rebuild Kit [ More info ]

Add to shopping cart $190.75
In Stock

WATER PUMP KIT
18-3147

About Sierra Marine

OEM Match

18-3147 - Water Pump Kit 817275T4 and 817275Q4 [ More info ]

Add to shopping cart $158.99 $137.43
10+ In Stock.

REBUILD KIT-W/P 817275K05
817275K05

About Mercury Marine

OEM Part

817275K05 - Water Pump Rebuild Kit [ More info ]

Add to shopping cart $190.75
Available to Order: Usually ships within 10 days.

# 1623-815822A47 GEAR HOUSING ASSEMBLY, Counter Rotation (COMPLETE) (1 required per assembly) (1.47:1 - 1.62:1 - 1.81:1 - 1.94:1 RATIO)
1623-815822A47 - GEAR HOUSING ASSE
1623-815822A47

About Mercury Marine

OEM Part

1623-815822A47 - Gear Housing Assembly [ More info ]
Unavailable
90-118-02 - SE116, COUNTER ROTATING LOWER (Replaces Mercruiser Gen II)
90-118-02

Sterndrive Engineering

90-118-02 - SE116 Lower Unit Mercruiser Alpha One Gen II, Counter Rotation, See Detail Page [ More info ]

Add to shopping cart $1275.00 $1275.00
Available to Order

90-116-02 - SE116, LOWER (Replaces Mercruiser Gen II)
90-116-02

Sterndrive Engineering

90-116-02 - SE116 Lower Unit Mercruiser Alpha One Gen II, Std Rotation, See Detail Page [ More info ]

Add to shopping cart $1075.00 $1075.00
Available to Order

# 26-88397A 1 SEAL KIT, Driveshaft Housing (AR required per assembly)
SEAL KIT 26-88397A 1
26-88397A 1

About Mercury Marine

OEM Part

26-88397A 1 - Seal Kit [ More info ]

Add to shopping cart $48.50
In Stock

SEAL KIT
18-2644

About Sierra Marine

OEM Match

18-2644 - Seal Kit, 26-88397A1 [ More info ]

Add to shopping cart $42.99 $37.03
In Stock

# 1623-815822A52 GEAR HOUSING ASSEMBLY, Counter Rotation (COMPLETE) (1 required per assembly) (2.00:1 RATIO)
1623-815822A52 - GEAR HOUSING ASSE
1623-815822A52

About Mercury Marine

OEM Part

1623-815822A52 - Gear Housing Assembly [ More info ]
Unavailable
#1 1623-815822A36 GEAR HOUSING ASSEMBLY (1 required per assembly)
GC GENII -BASIC 1623-815822A36
1623-815822A36

About Mercury Marine

OEM Part

1623-815822A36 - Gear Housing Assembly [ More info ]

Add to shopping cart $1,812.86
Available to Order: Usually ships within 10 days.

#2 821526 FILLER BLOCK (1 required per assembly)
821526 - FILLER BLOCK       - Replaced by -821526001
 

821526 - Filler Block [ More info ]
Unavailable
FILLER BLOCK 821526001
821526001

About Mercury Marine

OEM Part

821526001 - Filler Block [ More info ]

Add to shopping cart $18.30
In Stock

#3 17-37972 1 PIN (1 required per assembly)
PIN 17-37972  1
 

About Mercury Marine

OEM Part

17-37972 1 - Pin [ More info ]

Add to shopping cart $3.50
Available to Order: Usually ships within 10 days.

#4 16-57984 STUD, (.437-14/.437-20 x 2.380) (1 required per assembly)
STUD (.437-14/.437-20 x 16-57984
 

About Mercury Marine

OEM Part

16-57984 - Stud [ More info ]

Add to shopping cart $18.67
Available to Order: Usually ships within 10 days.

#4 10-806327 SCREW, (.437-14 x 1.750) (1 required per assembly)
10-806327 - SCREW (.437-14 x   - Replaced by -8M0204686
10-806327

10-806327 - Screw [ More info ]
Unavailable
SCREW 10-8M0204686
 

About Mercury Marine

OEM Part

10-8M0204686 - Trim Tab ANODE SCREW O/B ZZ [ More info ]

Add to shopping cart $6.70
Available to Order: Usually ships within 10 days.

#5 22-67892A 1 FITTING KIT, Magnetic, Plug Fill/Drain (1 required per assembly)
22-67892A 1 - FITTING KIT Magne  - Replaced by 22-67892A05
22-67892A 1

22-67892A 1 - Drain Plug [ More info ]
Unavailable
22-67892A05 - PLUG KIT Drain (M  - Replaced by 22-67892A06
22-67892A05

22-67892A05 - Drain Plug Kit [ More info ]
Unavailable
22-67892A06 - PLUG KIT Drain -   - Replaced by 22-8M0058389
22-67892A06

22-67892A06 - Drain Plug Kit [ More info ]
Unavailable
SCREW KIT 22-8M0058389
22-8M0058389

About Mercury Marine

OEM Part

22-8M0058389 - Screw Kit - Priced Individually [ More info ]

Add to shopping cart $10.30
10+ In Stock.

DRAIN SCREW PKG/50
18-23751-9

About Sierra Marine

OEM Match

18-23751-9 - Drain Screw , Package of 50 [ More info ]

Add to shopping cart $338.69 $294.70
In Stock

DRAIN PLUG MAGNETIC
18-2375

About Sierra Marine

OEM Match

18-2375 - Plug, 22-67892A1 [ More info ]

Add to shopping cart $6.99
Available to Order: Usually ships within 10 days.

#6 12-19183 WASHER, Fiber (1 required per assembly)
12-19183 - WASHER Fiber       - Replaced by 12-191832
12-19183

12-19183 - Washer (3/8 Inch Screw) [ More info ]
Unavailable
12-191832 - ->191833 - Replaced by -191833
12-191832

12-19183 2 - Washer - Priced Individually [ More info ]
Unavailable
SEAL-BLUE 12-191833
12-191833

About Mercury Marine

OEM Part

12-19183 3 - Seal -Blue - Priced Individually [ More info ]

Add to shopping cart $1.40
10+ In Stock.

DRAIN SCREW GASKET 2
18-2945

About Sierra Marine

OEM Match

18-2945-9 - Gasket 12-19183 2-Pack [ More info ]

Add to shopping cart $2.29
10+ In Stock.

SEAL (4)   12 19183Q02
12 19183Q02

About Mercury Marine

OEM Part

12-19183Q02 - Seals, Pack of 4 (yes this is actually a pack of 4) [ More info ]

Add to shopping cart $6.40
10+ In Stock.

SEAL (4)   12 19183K02
12 19183K02

About Mercury Marine

OEM Part

12-19183K02 - Seal, Pack of 4 [ More info ]

Add to shopping cart $6.40
Available to Order: Usually ships within 10 days.

#7 26-45577 1 SEAL (1 required per assembly)
268M0204680 26-45577  1
26-45577  1

About Mercury Marine

OEM Part

26-45577 1 - Seal - Priced Individually [ More info ]

Add to shopping cart $4.10
10+ In Stock.

SEAL RING GASKET 2
18-2944

About Sierra Marine

OEM Match

18-2944-9 - Gasket 26-45577 2-Pack [ More info ]

Add to shopping cart $5.99
Available to Order: Usually ships within 10 days.

#8 17-43044 PIN, Dowel - Without Hole (.375 x .625) (2 required per assembly)
PIN-DOWEL-SOLID 17-43044
17-43044

About Mercury Marine

OEM Part

17-43044 - Pin -Dowel-solid [ More info ]

Add to shopping cart $2.40
4 In Stock.

#9 31-42647A 1 BEARING ASSEMBLY, Roller (1 required per assembly)
BEARING ASSY 31-42647A 1
31-42647A 1

About Mercury Marine

OEM Part

31-42647A 1 - Roller Bearing - Drive Shaft [ More info ]

Add to shopping cart $63.50
In Stock

BEARING PINION
18-1117

About Sierra Marine

OEM Match

18-1117 - Bearing, 387817, 31-42647A1 [ More info ]

Add to shopping cart $53.99 $48.91
3 In Stock.

#10 11-817618 NUT, (.437-20) (1 required per assembly)
11-817618 - NUT (.437-20)      - Replaced by 11-859135
 

11-817618 - Nut (7/16-20) [ More info ]
Unavailable
NUT 11-859135
11-859135

About Mercury Marine

OEM Part

11-859135 - Nut (7/16-20), Priced Individually [ More info ]

Add to shopping cart $5.90
10+ In Stock.

#11 45-853648 DRIVESHAFT (1 required per assembly) (1.47:1 AND 1.62:1 RATIO)
45-853648 - DRIVESHAFT         - Replaced by -8M0140449
45-853648

45-853648 - Drive Shaft [ More info ]
Unavailable
DRIVESHAFT 45-8M0140449
 

About Mercury Marine

OEM Part

45-8M0140449 - Drive Shaft [ More info ]

Add to shopping cart $713.64
Available to Order: Usually ships within 10 days.

#11 45-853647 DRIVESHAFT (1 required per assembly) (1.81:1 - 1.94:1 AND 2.00:1 RATIO)
45-853647 - DRIVESHAFT         - Replaced by 45-853648
45-853647

45-853647 - Drive Shaft [ More info ]
Unavailable
#12 15-42637A 1 SHIM SET (AR required per assembly)
158M0063267 15-42637A 1
15-42637A 1

About Mercury Marine

OEM Part

15-42637A 1 - Shim Set [ More info ]

Add to shopping cart $17.77
10+ In Stock.

#13 31-33138A 1 BEARING ASSEMBLY, Tappered Roller (1 required per assembly)
BEARING SET 31-33138A 1
31-33138A 1

About Mercury Marine

OEM Part

31-33138A 1 - Tapered Roller Bearing [ More info ]

Add to shopping cart $70.67
Available to Order: Usually ships within 10 days.

#14 853651 RETAINER (1 required per assembly)
RETAINER-BEARING 853651
853651

About Mercury Marine

OEM Part

853651 - Bearing Retainer [ More info ]

Add to shopping cart $13.50
Available to Order: Usually ships within 10 days.

#15 NSS NOT SOLD SEPARATE, GEAR-Pinion (1 required per assembly) (SEE FORWARD GEAR ASSEMBLY)
NSS - NOT SOLD SEPARATE
 

About Mercury Marine

OEM Part

NSS - NOT SOLD SEPARATE [ More info ]
Unavailable
#16 12-92721 WASHER (1 required per assembly)
WASHER 12-92721
12-92721

About Mercury Marine

OEM Part

12-92721 - Washer, Pinion Gear [ More info ]

Add to shopping cart $1.40 $0.78
5 In Stock.

NUT SET DRIVE SHAFT
18-2359

About Sierra Marine

OEM Match

18-2359 - Nut Kit [ More info ]

Add to shopping cart $5.19 $2.97
Available to Order: Usually ships within 10 days.

PINION NUT WASHER 2
18-2343

About Sierra Marine

OEM Match

18-2343-9 - Washer, 12-92721, 2PK [ More info ]

Add to shopping cart $1.99
Available to Order: Usually ships within 10 days.

#17 11-35921 NUT, (.625-18) (1 required per assembly)
NUT 11-35921
11-35921

About Mercury Marine

OEM Part

11-35921 - Nut, (.625-18) [ More info ]

Add to shopping cart $7.70
10+ In Stock.

PINION NUT
18-3719

About Sierra Marine

OEM Match

18-3719 - Nut, 11-35921, 314730 [ More info ]

Add to shopping cart $4.99 $4.51
3 In Stock.

#18 817276 1 FACEPLATE (1 required per assembly)
817276  1 - FACEPLATE
817276  1

About Mercury Marine

OEM Part

817276 1 - Water Pump Face Plate [ More info ]
Unavailable
#19 821759A 4 CARRIER ASSEMBLY (1 required per assembly)
821759A 4 - CARRIER ASSEMBLY   - Replaced by -807929A 1
 

821759A 4 - Carrier Assembly [ More info ]
Unavailable
807929A 1 - CARRIER ASSEMBLY
807929A 1

About Mercury Marine

OEM Part

807929A 1 - Carrier Assembly [ More info ]
Unavailable
SEAL CARRIER
18-2354

About Sierra Marine

OEM Match

18-2354 - Carrier, 821759A4 [ More info ]

Add to shopping cart $36.99 $33.07
6 In Stock.

#20 26-66302 SEAL, Oil (2 required per assembly) SN# 0M400411 & Below
268M0214939 26-66302
26-66302

About Mercury Marine

OEM Part

26-66302 - Seal - Priced Individually [ More info ]

Add to shopping cart $19.50
10+ In Stock.

26-8M0214939 - SEAL @3
 

About Mercury Marine

OEM Part

26-8M0214939 - SEAL @3 [ More info ]
Unavailable
OIL SEAL
18-2056

About Sierra Marine

OEM Match

18-2056 - Seal, 26-96503 1 [ More info ]

Add to shopping cart $14.99
10+ In Stock.

#20 26-864319 SEAL, Oil (1 required per assembly) SN# 0M400412 & Up
SEAL-DOUBLE 26-864319
26-864319

About Mercury Marine

OEM Part

26-864319 - Seal -double [ More info ]

Add to shopping cart $9.60
10+ In Stock.

#21 25-90011 O-RING, (2.175 x .175) (1 required per assembly)
25896523 25-90011
25-90011

About Mercury Marine

OEM Part

25-90011 - Drive Shaft Cover O-Ring [ More info ]

Add to shopping cart $1.39
10+ In Stock.

25-896523 - O-RING (2.175 x .  - Replaced by -8M0142854
25-896523

25-896523 - O-ring, (2.175 X .103) [ More info ]
Unavailable
O RING 25-8M0142854
25-8M0142854

About Mercury Marine

OEM Part

25-8M0142854 - O-Ring [ More info ]

Add to shopping cart $1.10
Available to Order: Usually ships within 10 days.

#22 817275A 1 PUMP ASSEMBLY, Water (1 required per assembly)
HOUSING KIT-W/P 817275A 1
817275A 1

About Mercury Marine

OEM Part

817275A 1 - Housing for Water Pump [ More info ]

Add to shopping cart $98.67
In Stock

WATER PUMP HOUSING KIT UPP
18-3571

About Sierra Marine

OEM Match

18-3571 - Water Pump Kit 817275A1 , See Notes on Detail Page [ More info ]

Add to shopping cart $92.99 $83.99
2 In Stock.

WATER PUMP KIT
18-3570

About Sierra Marine

OEM Match

18-3570 - Water Pump Kit 817275A1, A2 [ More info ]

Add to shopping cart $90.99 $82.22
10+ In Stock.

#23 27-43033 1 GASKET (1 required per assembly)
GASKET 27-43033  1
27-43033  1

About Mercury Marine

OEM Part

27-43033 1 - Face Plate To Cover Gasket [ More info ]

Add to shopping cart $10.70
7 In Stock.

#24 27-817277 GASKET (1 required per assembly)
27-817277 - GASKET             - Replaced by 27-8172771
27-817277

27-817277 - Impeller Housing Gasket [ More info ]
Unavailable
GASKET 27-8172771
27-8172771

About Mercury Marine

OEM Part

27-817277 1 - Gasket -Sold each [ More info ]

Add to shopping cart $5.50
4 In Stock.

IMPELLER GASKET 2
18-2566

About Sierra Marine

OEM Match

18-2566-9 - Gasket 27-817277 2-Pack [ More info ]

Add to shopping cart $7.99
4 In Stock.

#25 26-816575A 2 SEAL KIT (1 required per assembly)
SEAL KIT-OBM 26-816575A 2
26-816575A 2

About Mercury Marine

OEM Part

26-816575A 2 - Seal Kit [ More info ]

Add to shopping cart $10.50
10+ In Stock.

FACE SEAL
18-2599

About Sierra Marine

OEM Match

18-2599 - Seal, 26-816575A 2 [ More info ]

Add to shopping cart $7.59
10+ In Stock.

#26 10-816928 SCREW, (M6 x 16) (4 required per assembly)
SCREW (M6 x 16) 10-816928
10-816928

About Mercury Marine

OEM Part

10-816928 - Screw [ More info ]

Add to shopping cart $2.30
1 In Stock.

#27 47-43026 2 IMPELLER (1 required per assembly)
47-43026  2 - IMPELLER           - Replaced by 47-43026T 2
47-43026  2

47-43026 2 - Water Pump Impeller [ More info ]
Unavailable
IMPELLER 47-43026T 2
47-43026T 2

About Mercury Marine

OEM Part

47-43026T 2 - Water Pump Impeller [ More info ]

Add to shopping cart $37.08
10+ In Stock.

IMPELLER
18-3056

About Sierra Marine

OEM Match

18-3056 - Impeller 47-43026-2 [ More info ]

Add to shopping cart $26.99 $23.03
10+ In Stock.

IMPELLER   47 43026Q02
47 43026Q02

About Mercury Marine

OEM Part

47-43026Q02 - Water Pump Impeller [ More info ]

Add to shopping cart $37.08
Available to Order: Usually ships within 10 days.

#28 28-43037 KEY (1 required per assembly)
28-43037 - KEY                - Replaced by 28-8M0032833
28-43037

28-43037 - Key [ More info ]
Unavailable
288M0204723 28-8M0032833
28-8M0032833

About Mercury Marine

OEM Part

28-8M0032833 - Key [ More info ]

Add to shopping cart $4.67
1 In Stock.

KEY 28-8M0204723
28-8M0204723

About Mercury Marine

OEM Part

288M0204723 - KEY Note: Priced Individually [ More info ]

Add to shopping cart $4.20
5 In Stock.

IMPELLER KEY
18-3293

About Sierra Marine

OEM Match

18-3293 - Key, 28-43037 [ More info ]

Add to shopping cart $5.99 $5.45
3 In Stock.

#29 816597A 1 COUPLING ASSEMBLY (1 required per assembly)
COUPLING ASSY 816597A 1
816597A 1

About Mercury Marine

OEM Part

816597A 1 - Coupling Assembly [ More info ]

Add to shopping cart $20.80
2 In Stock.

Water Tube Coupling (early)
96-116-12K

Sterndrive Engineering

96-116-12K - Water Tube Coupling (Early) [ More info ]

Add to shopping cart $10.50 $10.50
Available to Order

#30 25-21836 O-RING, (.796 x .139) (2 required per assembly)
258M0204645 25-21836
25-21836

About Mercury Marine

OEM Part

25-21836 - O-ring, (.796 X .139) [ More info ]

Add to shopping cart $2.30
1 In Stock.

O RING 25-8M0204645
25-8M0204645

About Mercury Marine

OEM Part

25-8M0204645 - O RING [ More info ]

Add to shopping cart $2.30
6 In Stock.

O-RING 5
18-7153

About Sierra Marine

OEM Match

18-7153-9 - (PK5) O-Ring 25-25439 [ More info ]

Add to shopping cart $8.99
Available to Order: Usually ships within 10 days.

#31 23-816583 SLEEVE (1 required per assembly)
SLEEVE 23-816583
23-816583

About Mercury Marine

OEM Part

23-816583 - Sleeve [ More info ]

Add to shopping cart $10.70
3 In Stock.

GUIDE TUBE FOR GEN II
18-3222

About Sierra Marine

OEM Match

18-3222 - Tube, 23-816583 [ More info ]

Add to shopping cart $9.59 $7.28
8 In Stock.

#32 815919A 1 SHIFT SHAFT, Lower (1 required per assembly)
815919A 1 - SHIFT SHAFT Lower
815919A 1

About Mercury Marine

OEM Part

815919A 1 - Shaft Kit - Shift [ More info ]
Unavailable
#33 53-29641 E RING (1 required per assembly)
E RING 53-29641
53-29641

About Mercury Marine

OEM Part

53-29641 - E Ring - Priced Individually [ More info ]

Add to shopping cart $1.70
6 In Stock.

E CLIP - GEN II
18-4295

About Sierra Marine

OEM Match

18-4295-9 - Clip, 53-29461, 2PK [ More info ]

Add to shopping cart $2.59 $2.17
Available to Order: Usually ships within 10 days.

#34 12-77674 WASHER (1 required per assembly)
WASHER 12-77674
12-77674

About Mercury Marine

OEM Part

12-77674 - Washer, Rubber [ More info ]

Add to shopping cart $1.70
7 In Stock.

WASHER 5
18-2316

About Sierra Marine

OEM Match

18-2316-9 - Washer, 12-77674, 5PK [ More info ]

Add to shopping cart $4.69 $3.94
Available to Order: Usually ships within 10 days.

#35 23-815921A13 BUSHING ASSEMBLY (1 required per assembly)
23-815921A13 - BUSHING ASSEMBLY   - Replaced by 23-815921A20
 

23-815921A13 - BUSHING ASSY [ More info ]
Unavailable
BUSHING ASSY 23-815921A20
23-815921A20

About Mercury Marine

OEM Part

23-815921A20 - Bushing Assembly [ More info ]

Add to shopping cart $28.00
In Stock

#36 26-89236 SEAL, Oil (1 required per assembly)
26892361 26-89236
26-89236

About Mercury Marine

OEM Part

26-89236 - Seal [ More info ]

Add to shopping cart $12.21
7 In Stock.

SEAL Oil 26-892361
26-892361

About Mercury Marine

OEM Part

26-89236 1 - Seal [ More info ]

Add to shopping cart $17.00
10+ In Stock.

OIL SEAL
18-2009

About Sierra Marine

OEM Match

18-2009 - Seal, 26-89236 [ More info ]

Add to shopping cart $11.99 $11.31
10+ In Stock.

#37 25-36318 O-RING, (.799) (2 required per assembly)
258M0214927 25-36318
25-36318

About Mercury Marine

OEM Part

25-36318 - O-ring, (.799) [ More info ]

Add to shopping cart $1.60
10+ In Stock.

25-8M0214927 - O RING @5
 

About Mercury Marine

OEM Part

25-8M0214927 - O RING @5 [ More info ]
Unavailable
O-RING 2
18-7440-1

About Sierra Marine

OEM Match

18-7440-1-9 - O-Ring (PK2) [ More info ]

Add to shopping cart $3.99 $3.37
Available to Order: Usually ships within 10 days.

#38 25-62702 O-RING, (.301 x .070) (1 required per assembly)
25-62702 - O-RING (.301 x .0  - Replaced by 25-627021
25-62702

25-62702 - O-ring, (.301 X .070) [ More info ]
Unavailable
O-RING 25-627021
25-627021

About Mercury Marine

OEM Part

25-62702 1 - O-Ring [ More info ]

Add to shopping cart $1.60
10+ In Stock.

O-RING 5
18-7413

About Sierra Marine

OEM Match

18-7413-9 - O-Ring (PK5) 25-62702, 303191 [ More info ]

Add to shopping cart $4.99 $4.73
2 In Stock.


This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.