Parts for Mercury Marine Model 800 80 HP (6 Cylinder) Gear Housing Assembly, Complete (Continued)

Revise Search: All Models > Model 800 80 HP (6 Cylinder) > 1398630 - 1566239 ( ) > Gear Housing Assembly, Complete (Continued)

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Each product listed is an OEM or aftermarket equivalent part. [ Example ]

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• Aftermarket gearcase may be available for less than $900 USD. 70 HP+ only. Please call.

Engine section

Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

#-	1623-1780A 3	GEAR HOUSING ASSEMBLY, COMPLETE (SHORT SHAFT) (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		1623-1780A 3 - 1623-1780A 3 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 5
		1623-2022A 5 - 1623-2022A 5 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 7
		1623-2022A 7 - Gear Housing Completelete, NLA [ More info ] $1,200.00 5 in stock.
#-	1623-1780A 2	GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT) (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		1623-1780A 2 - 1623-1780A 2 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 2
		1623-2022A 2 - 1623-2022A 2 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 6
		1623-2022A 6 - GEAR HOUSING ASSY O NLA [ More info ] Unavailable
#-	1623-1780A 5	GEAR HOUSING ASSEMBLY, COMPLETE (SHORT SHAFT) (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		1623-1780A 5 - 1623-1780A 5 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 5
#-	1623-1780A 4	GEAR HOUSING ASSEMBLY, COMPLETE (LONG SHAFT) (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		1623-1780A 4 - 1623-1780A 4 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2022A 2
#1	1623-1780A 1	GEAR HOUSING ASSEMBLY (1,1 required per assembly)
		1623-1780A 1 - 1623-1780A 1 - GEAR HOUSING ASSY O [ More info ] Unavailable Replaced by 1623-2041A 2
		1623-2041A 2 - GEAR HOUSING ASSY O NLA [ More info ] Unavailable
#2	16-30661	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (3 15/16") (1,1 required per assembly)
		16-30661 - 16-30661 - STUD O [ More info ] Unavailable Replaced by 16-45199
		16-45199 - 16-45199 - STUD O [ More info ] Unavailable Replaced by 16-57921
		16-57921 - Stud [ More info ] $8.40 10+ in stock.
#3	16-29078	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (2") (2,2 required per assembly)
		16-29078 - 16-29078 - STUD O [ More info ] Unavailable Replaced by 16-45198
		16-45198 - 16-45198 - STUD O [ More info ] Unavailable Replaced by 16-52614
		16-52614 - 16-52614 - STUD O [ More info ] Unavailable Replaced by 16-57920
		16-57920 - Stud [ More info ] $8.05 10+ in stock.
		16-57920 1 - 16-57920 1 - STUD (.437-14/.43 O [ More info ] Unavailable Replaced by 16-57920 3
		16-57920 3 - Stud [ More info ] $5.70 4 in stock.
#4	16-30901	STUD, WATER PUMP BASE AND BODY TO GEAR HOUSING (3 1/4") (1, required per assembly)
		16-30901 - STUD O NLA [ More info ] Unavailable
#5	25-20633	"O" RING, GEAR HOUSING STUD (16-30901) (1, required per assembly)
		25-20633 - 25-20633 - O RING O [ More info ] Unavailable Replaced by 25-62704
		25-62704 - O-Ring [ More info ] $0.82 Available to order: Usually ships within 8 days.
		18-7116 - O-Ring 303067, 25-62704 [ More info ] $0.99 $0.70 10+ in stock.
#4	16-30669	STUD, WATER PUMP BASE AN DBODY TO GEAR HOIUSING (3 1/4") (1,1 required per assembly)
		16-30669 - STUD @2 O NLA [ More info ] Unavailable
#6	16-30667	STUD, WATER PUMP BASE AND BODY TO GEAR HOUSING (3 1/8") (2,2 required per assembly)
		16-30667 - Stud [ More info ] $7.80 10+ in stock.
#7	22-30570	FITTING, GEAR HOUSING TO WATER INTAKE HOSE (1,1 required per assembly)
		22-30570 - Fitting, NLA [ More info ] $9.50 1 in stock.
#8	31-29982	BEARING, ROLLER - DRIVE SHAFT (1,1 required per assembly)
		31-29982 - 31-29982 - ROLLER BEARING O [ More info ] Unavailable Replaced by 31-32898
		31-32898 - 31-32898 - BEARING O [ More info ] Unavailable Replaced by 31-32898T
		31-32898T - Bearing [ More info ] $36.34 1 in stock.
		18-1115 - Bearing, 31-32898T [ More info ] $38.76 2 in stock.
#9	45-38459	DRIVE SHAFT (SHORT SHAFT) (1,1 required per assembly)
		45-38459 - Drive Shaft, NLA [ More info ] $200.00 1 in stock.
#9	45-38460	DRIVE SHAFT (LONG SHAFT) (1,1 required per assembly)
		45-38460 - DRIVE SHAFT O NLA [ More info ] Unavailable
#10	43-30566	GEAR, PINION - DRIVE SHAFT (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		43-30566 - Pinion Gear [ More info ] $100.00 10+ in stock.
#10	43-31419	GEAR, PINION - DRIVE SHAFT (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		43-31419 - Pinion Gear [ More info ] $150.00 10+ in stock.
#11	11-30932	NUT, PINION GEAR TO DRIVE SHAFT (1,1 required per assembly)
		11-30932 - Nut [ More info ] $8.00 $2.92 10+ in stock.
#12	15-30278A 1	SHIM, DRIVE SHAFT BALL BEARING TO GEAR HOUSING (AR,AR required per assembly)
		15-30278A 1 - SHIM SET O NLA [ More info ] Unavailable
#13	30-20464	BEARING, BALL - DRIVE SHAFT (1,1 required per assembly)
		30-20464 - 30-20464 - BALL BEARING O [ More info ] Unavailable Replaced by 30-63326
		30-63326 - 30-63326 - BEARING O [ More info ] Unavailable Replaced by 30-63326T
		30-63326T - Ball Bearing [ More info ] $19.50 Available to order: Usually ships within 8 days.
		18-1153 - Bearing 30-63326 [ More info ] $24.49 $19.68 Available to order: Usually ships within 8 days.
#14	53-30726	RING, RETAINING - BALL BEARING (1,1 required per assembly)
		53-30726 - Snap Ring, NLA [ More info ] $8.50 10+ in stock.
#15	25-30224	"O" RING, ATER PUMP BASE (1,1 required per assembly)
		25-30224 - O-Ring - Priced Individually [ More info ] $2.50 10+ in stock.
		18-7173-9 - O-Ring (PK5) 310327, 25-30224 [ More info ] $12.45 $7.72 3 in stock.
#16	46-30600A 1	WATER PUMP BASE ASSEMBLY (1,1 required per assembly)
		46-30600A 1 - 46-30600A 1 - BASE ASSY O [ More info ] Unavailable Replaced by 46-31277A 2
		46-31277A 2 - Water Pump Kit, NLA [ More info ] $90.00 4 in stock.
#17	26-31489	OIL SEAL, WATER PUMP BASE (1,1 required per assembly)
		26-31489 - 26-31489 - OIL SEAL @3 O [ More info ] Unavailable Replaced by 26-94038
		26-94038 - Seal - Priced Individually [ More info ] $15.70 10+ in stock.
		18-2007 - Seal 26-94038 [ More info ] $13.99 $10.03 2 in stock.
#18	17-29596	DOWEL PIN, WATER PUMP BASE TO BODY (2,2 required per assembly)
		17-29596 - Pin -Dowel - Priced Individually [ More info ] $2.10 10+ in stock.
		17-29596T - Pin -Dowel - Priced Individually [ More info ] $3.20 1 in stock.
#19	27-32433	GASKET, LOWER - WATER PUMP BASE TO FACE PLATE (1,1 required per assembly)
		27-32433 - Gasket - Priced Individually [ More info ] $1.50 10 in stock.
		27-85608 - 27-85608 - GASKET O [ More info ] Unavailable Replaced by 27-85608 1
		27-85608 1 - 27-85608 1 - GASKET O [ More info ] Unavailable Replaced by 27-8M0090319
		27-8M0090319 - Water Pump Gasket - Priced Individually [ More info ] $2.80 10+ in stock.
		18-2914-9 - Gasket 27-85608 2-Pack [ More info ] $5.98 $3.82 10+ in stock.
#21	27-32434	GASKET, FACE PLATE TO WATER PUMP BODY (1,1 required per assembly)
		27-32434 - 27-32434 - GASKET O [ More info ] Unavailable Replaced by 27-85609
		27-85609 - 27-85609 - GASKET O [ More info ] Unavailable Replaced by 27-85609 1
		27-85609 1 - 27-85609 1 - GASKET O [ More info ] Unavailable Replaced by 27-858524
		27-858524 - Gasket - Priced Individually [ More info ] $2.80 10+ in stock.
		18-2915-9 - Gasket 27-858524 2-Pack [ More info ] $4.98 $3.46 10+ in stock.
#22	46-30698A 1	WATER PUMP BODY ASSEMBLY (1,1 required per assembly)
		46-30698A 1 - 46-30698A 1 - BODY ASSY O [ More info ] Unavailable Replaced by 46-31277A 2
#23	-30915	INSERT, WATER PUMP BODY (1,1 required per assembly)
		30915 - Insert [ More info ] $67.33 10+ in stock.
#24	26-31507	OIL SEAL, WATER PUMP BODY (1,1 required per assembly)
		26-31507 - 26-31507 - SEAL Oil O [ More info ] Unavailable Replaced by 26-79884
		26-79884 - Oil Seal [ More info ] $8.00 10+ in stock.
		26-16977 - Seal [ More info ] $15.10 10+ in stock.
		18-2026 - Seal, 321453 [ More info ] $13.99 $9.76 10+ in stock.
		18-2013 - Seal, 26-16977 [ More info ] $14.49 $9.83 6 in stock.
#25	47-30221	IMPELLER, WATER PUMP (1,1 required per assembly)
		47-30221 - 47-30221 - IMPELLER @2 O [ More info ] Unavailable Replaced by 47-65960
		47-65960 - 47-65960 - IMPELLER O [ More info ] Unavailable Replaced by 47-89984
		47-89984 - 47-89984 - IMPELLER O [ More info ] Unavailable Replaced by 47-89984 2
		47-89984 2 - 47-89984 2 - IMPELLER O [ More info ] Unavailable Replaced by 47-89984 4
		47-89984 4 - 47-89984 4 - IMPELLER O [ More info ] Unavailable Replaced by 47-89984T 4
		47-89984T 4 - Impeller [ More info ] $25.91 10+ in stock.
		18-3017 - Impeller 47-89984 [ More info ] $20.49 $13.53 10+ in stock.
#26	17-29967	PIN, IMPELLER DRIVE (1,1 required per assembly)
		17-29967 - Pin - Priced Individually [ More info ] $3.25 10+ in stock.
		17-8M0034466 - Pin - Priced Individually [ More info ] $4.00 Available to order: Usually ships within 8 days.
#27	10-30720	SCREW, WATER PUMP BODY TO GEAR HOUSING (1/4") (1,1 required per assembly)
		10-30720 - Screw, NLA [ More info ] $14.00 10+ in stock.
		18-3226-9 - Screw, 10-30720, 5PK [ More info ] $44.95 2 in stock.
#28	13-26992	LOCKWASHER, WATER PUMP BODY FASTENING SCREW AND STUDS (1/4" (3,3 required per assembly)
		13-26992 - LockWasher - Priced Individually [ More info ] $0.80 10+ in stock.
#29	11-29598	NUT, WATER PUMP BODY FASTENING STUDS (1/4") (2,2 required per assembly)
		11-29598 - Nut - Priced Individually [ More info ] $2.00 10+ in stock.
#30	13-26993	LOCKWASHER, WATER PUMP BODY FASTENING STUDS (5/16") (1,1 required per assembly)
		13-26993 - LockWasher - Priced Individually [ More info ] $1.40 10+ in stock.
#31	11-28770	NUT, WATER JPUMP BODY FASTENING STUD (5/16") (1,1 required per assembly)
		11-28770 - Nut - Priced Individually [ More info ] $2.50 10+ in stock.
#32	25-30271	RING, RUBBER - CENTRIFUGAL SLINGER (DRIVE SHAFT) (1,1 required per assembly)
		25-30271 - Ring - Priced Individually [ More info ] $1.50 Available to order: Usually ships within 8 days.
$Slinger\\O-Ring$		18-7426-9 - O-Ring (PK2) 25-30271 [ More info ] $3.98 $1.78 3 in stock.
#33	26-36557A 1	SEAL, RUBBER - WATER PUMP BODY (1,1 required per assembly)
		26-36557A 1 - Seal - Priced Individually [ More info ] $4.00 9 in stock.
		26-38970 - Seal - Priced Individually [ More info ] $3.50 10+ in stock.
		18-3110 - Seal, 26-38970 [ More info ] $3.49 $2.40 10+ in stock.
#34	23-29804	SLEEVE, GUIDE - WATER INLET TUBE (1,1 required per assembly)
		23-29804 - 23-29804 - SLEEVE O [ More info ] Unavailable Replaced by 23-29804T
		23-29804T - Sleeve - Priced Individually [ More info ] $6.40 5 in stock.
		18-3109 - Tube 23-29804 [ More info ] $5.49 $4.16 10+ in stock.
#35	25-30613	"O" RING, UPPER - DRIVE SHAFT (1,1 required per assembly)
		25-30613 - O-Ring - Priced Individually [ More info ] $1.30 1 in stock.
		18-7158-9 - (PK5) O-Ring 25-30613 [ More info ] $9.95 $4.42 2 in stock.
#37	32-30556	HOSE, WATER INTAKE-GEAR HOUSING (1,1 required per assembly)
		32-30556 - HOSE O NLA [ More info ] Unavailable
#38	54-30558	CLAMP, WATER INTAKE HOSE TO FITTINGS (2,2 required per assembly)
		54-30558 - Clamp, NLA [ More info ] $5.00 1 in stock.
#39	-25136	SHAFT, SHIFT - LOWER (1,1 required per assembly)
		25136 - Shaft, NLA [ More info ] $155.00 2 in stock.
#40	18-20233	CLIP, RETAINING - SHIFT SHAFT (1,1 required per assembly)
		18-20233 - Pin, Hair-Ext, Priced Individually [ More info ] $0.90 1 in stock.
		53-29641 - E Ring - Priced Individually [ More info ] $1.30 10 in stock.
		18-4295-9 - Clip, 53-29461, 2PK [ More info ] $2.98 $1.83 5 in stock.
#41	25-25439	"O"RING, SHIFT SHAFT BUSHING (1,1 required per assembly)
		25-25439 - O-Ring - Priced Individually [ More info ] $1.50 10+ in stock.
		18-7420-9 - O-Ring (PK5) 25-21836 [ More info ] $9.95 $4.35 10+ in stock.
#42	23-30617A 1	BUSHING ASSEMBLY, SHIFT SHAFT (1,1 required per assembly)
		23-30617A 1 - 23-30617A 1 - BUSHING ASSY O [ More info ] Unavailable Replaced by 23-30617A 2
		23-30617A 2 - Bushing Assembly [ More info ] $15.00 7 in stock.
		23-8M0112749 - Shift Shaft Bushing ZZ [ More info ] $21.25 Available to order: Usually ships within 8 days.
		18-2154 - Bushing, 23-30617A2 [ More info ] $19.53 $15.39 5 in stock.
#43	26-31249	OIL SEAL, SHIFT SHAFT BUSHING (1,1 required per assembly)
		26-31249 - 26-31249 - OIL SEAL @5 O [ More info ] Unavailable Replaced by 26-46021
		26-46021 - 26-46021 - SEAL Oil O [ More info ] Unavailable Replaced by 26-89236
		26-89236 - Seal [ More info ] $7.68 2 in stock.
		26-89236 1 - Seal [ More info ] $11.80 2 in stock.
		18-2009 - Seal, 26-89236 [ More info ] $10.49 $7.28 9 in stock.
#44	12-31266	WASHER, RUBBER - SHIFT SHAFT BUSHING (,1 required per assembly)
		12-31266 - Washer - Priced Individually [ More info ] $0.70 10+ in stock.
		18-2340-9 - Washer, 12-31266, 5PK [ More info ] $7.45 $2.83 5 in stock.
#45	-25138	CAM, LOWER - REVERSE LOCKING (1,1 required per assembly)
		25138 - 25138 - CAM O [ More info ] Unavailable Replaced by -52918
		52918 - Reverse Locking Lower Cam, NLA [ More info ] $30.00 10+ in stock.
#46	-29823	CAM, UPPER - REVERSE LOCKING (1,1 required per assembly)
		29823 - 29823 - CAM O [ More info ] Unavailable Replaced by -52919
		52919 - Reverse Locking Upper Cam, NLA [ More info ] $36.00 10+ in stock.
#47	23-30607	SPACER, NYLON - REVERSE LOCKING CAM (1,1 required per assembly)
		23-30607 - Spacer, NLA [ More info ] $12.00 10+ in stock.
#48	22-21290	PLUG, PIPE - SHIFT SHAFT GREASE FILLER HOLE (1,1 required per assembly)
		22-21290 - 22-21290 - PLUG @5 O [ More info ] Unavailable Replaced by 22-52644
		22-52644 - Plug [ More info ] $0.85 4 in stock.
		22-35268 - Plug [ More info ] $1.85 1 in stock.
		22-39072 - PLUG [ More info ] $3.30 5 in stock.
		22-39072 1 - Plug - Priced Individually [ More info ] $6.50 2 in stock.
#49	10-28634	SCREW, GREASE FILLER AND VENT HOLE (2,2 required per assembly)
		10-28634 - 10-28634 - SCREW (.375-16) O [ More info ] Unavailable Replaced by 10-79953
		10-79953 - 10-79953 - SCREW (.375-16 x O [ More info ] Unavailable Replaced by 10-79953A 2
		10-79953A 2 - 10-79953A 2 - SCREW KIT (.375-1 O [ More info ] Unavailable Replaced by 10-79953Q 2
		10-79953Q 2 - 10-79953Q 2 - SCREW KIT (.375-1 O [ More info ] Unavailable Replaced by 10-79953Q04
		10-79953Q04 - Screw Kit - Priced Individually [ More info ] $5.80 10+ in stock.
		18-2244 - Plug Kit, 10-79953A2 [ More info ] $2.99 $2.07 10+ in stock.
		10-79953K04 - Drain Screw - Priced Individually [ More info ] $5.80 10+ in stock.
#50	12-20260	WASHER GREASE FILLER AND VENT HOLE SCREW (2,2 required per assembly)
		12-20260 - 12-20260 - WASHER O [ More info ] Unavailable Replaced by 12-19183
		12-19183 - 12-19183 - WASHER Fiber O [ More info ] Unavailable Replaced by 12-19183 2
		12-19183 2 - 12-19183 2 - WASHER O [ More info ] Unavailable Replaced by 12-19183 3
		12-19183 3 - Seal -Blue - Priced Individually [ More info ] $1.00 10+ in stock.
		18-2945-9 - Gasket 12-19183 2-Pack [ More info ] $2.78 $1.52 10+ in stock.
		12-19183Q02 - Seals, Pack of 4 (yes this is actually a pack of 4) [ More info ] $5.10 10+ in stock.
		12-19183K02 - Seal, Pack of 4 [ More info ] $5.10 10+ in stock.
#51	10-29608	SCREW, GEAR HOUSING FLUSHING HOLE (1,1 required per assembly)
		10-29608 - Screw, NLA [ More info ] $10.00 10+ in stock.
#52	27-29586	GASKET, GEAR HOUSING FLUSHING HOLE SCREW (1,1 required per assembly)
		27-29586 - Gasket - Priced Individually [ More info ] $0.80 10+ in stock.
#53	26-29612	SEAL, GEAR HOUSING FLUSHING HOLE (1,1 required per assembly)
		26-29612 - Seal - Priced Individually [ More info ] $3.30 10+ in stock.