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

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

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View diagram and parts list below. Tap to zoom. Scroll down to order.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

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COMPLETE GEARCASE?
• 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 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 [ More info ] Unavailable Replaced by 1623-2022A 5
		1623-2022A 5 - 1623-2022A 5 - GEAR HOUSING ASSY [ More info ] Unavailable Replaced by 1623-2022A 7
		1623-2022A 7 - GEAR HOUSING ASSY NLA [ More info ] Unavailable
#	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 [ 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 [ More info ] Unavailable Replaced by 1623-2022A 2
		1623-2022A 2 - 1623-2022A 2 - GEAR HOUSING ASSY [ More info ] Unavailable Replaced by 1623-2022A 6
		1623-2022A 6 - GEAR HOUSING ASSY NLA [ More info ] Unavailable
#	43-30938A 1	FORWARD GEAR ASSEMBLY, COMPLETE (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		43-30938A 1 - 43-30938A 1 - FORWARD GEAR ASSY [ More info ] Unavailable Replaced by 43-30938
		43-30938 - Forward Gear [ More info ] $32.00 5 In Stock.
		43-30938A 2 - Forward Gear [ More info ] $75.00 2 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 [ More info ] Unavailable Replaced by 1623-2022A 2
#	43-30937A 1	REVERSE GEAR ASSEMBLY, COMPLETE (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		43-30937A 1 - 43-30937A 1 - REVERSE GEAR ASSY [ More info ] Unavailable Replaced by 43-30937
		43-30937 - Reverse Gear [ More info ] $48.00 10+ In Stock.
#	43-31417A 1	FORWARD GREAR ASSEMBLY, COMPLETE (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		43-31417A 1 - 43-31417A 1 - FORWARD GEAR ASSY [ More info ] Unavailable Replaced by 43-31886A 1
		43-31886A 1 - 43-31886A 1 - FORWARD GEAR ASSY [ More info ] Unavailable Replaced by 43-34085A 1
		43-34085A 1 - 43-34085A 1 - FORWARD GEAR ASSY [ More info ] Unavailable Replaced by 43-34085
		43-34085 - 43-34085 - PROPELLER GEAR [ More info ] Unavailable Replaced by 43-53100
		43-53100 - Propeller Gear [ More info ] $48.00 3 In Stock.
		43-53100A 3 - Forward Gear Assembly, NLA [ More info ] $65.00 2 In Stock.
#1	1623-1780A 1	GEAR HOUSING ASSEMBLY (1,1 required per assembly)
		1623-1780A 1 - 1623-1780A 1 - GEAR HOUSING ASSY [ More info ] Unavailable Replaced by 1623-2041A 2
		1623-2041A 2 - GEAR HOUSING ASSY NLA [ More info ] Unavailable
#54	-36288	CAM, SHIFT (1,1 required per assembly)
		36288 - Cam [ More info ] $22.99 10 In Stock.
		76039 - 76039 - CAM Shift Control [ More info ] Unavailable Replaced by -760394
		76039 4 - Shift Cam - Priced Individually [ More info ] $36.67 6 In Stock.
#55	-30625	FOLLOWER, CAM (1,1 required per assembly)
		30625 - Cam Follower [ More info ] $45.33 1 In Stock.
#56	-30624	SLIDE, CROSS PIN (1,1 required per assembly)
		30624 - Slide, NLA [ More info ] $109.99 10+ In Stock.
#57	24-30622	SPRING, COMPRESSION - CAM FOLLOWER (1,1 required per assembly)
		24-30622 - Spring, Cam Follower [ More info ] $6.40 10+ In Stock.
#58	15-30923A 1	SHIM, BEARING OUTER RACE TO GEAR HOUSING (AR,AR required per assembly)
		15-30923A 1 - SHIM NLA [ More info ] Unavailable
#59	17-30632	PIN, CROSS - RATCHET TO PROPELLER SHAFT (1,1 required per assembly)
		17-30632 - Pin - Cross - Priced Individually [ More info ] $2.99 10+ In Stock.
		17-8M0020941 - 17-8M0020941 - PIN Cross [ More info ] Unavailable Replaced by 17-8M0084681
		17-8M0084681 - 17-8M0084681 - PIN Cross [ More info ] Unavailable Replaced by 17-8M0100263
		17-8M0100263 - Pin - Priced Individually [ More info ] $4.30 Available to Order: Usually ships within 10 days.
#60	24-30893	SPRING, RETAINING - CROSS PIN (1,1 required per assembly)
		24-30893 - Spring, Reatiner - Cross Pin [ More info ] $2.60 $1.66 10+ In Stock.
		18-2348 - Spring, 24-30893 [ More info ] $3.99 $2.99 5 In Stock.
#61	44-30944	SHAFT, PROPELLER (1,1 required per assembly)
		44-30944 - Propeller Shaft [ More info ] $135.00 3 In Stock.
		44-47900A 2 - Prop Shaft, NLA [ More info ] $99.99 2 In Stock.
#62	43-30938	FORWARD GEAR ASSEMBLY, COMPLETE (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
#63	31-30895	BEARING, ROLLER - FORWARD GEAR (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		31-30895 - Roller Bearing -Forward Gear [ More info ] $16.99 10+ In Stock.
		31-30895T - Bearing - Roller [ More info ] $21.78 $18.51 3 In Stock.
		18-1157 - Bearing 31-30895 [ More info ] $16.59 $15.02 1 In Stock.
#64	31-30894A 1	TAPERED ROLLER BEARING ASSEMBLY (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		31-30894A 1 - BEARING SET Cup A [ More info ] Unavailable
		18-1156 - Bearing 31-30894A1 [ More info ] $48.49 $41.55 In Stock
#65	31-31092	CUP, TAPERED ROLLER BEARING (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		31-31092 - Race, NLA [ More info ] $7.33 10+ In Stock.
#66	-30941	RATCHET, SLIDING CLUTCH (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		52-30941 - Clutch, NLA [ More info ] $48.00 10+ In Stock.
#67	43-30937	REVERSE GEAR ASSEMBLY (1,1 required per assembly)
#68	30-30548	BEARING, BALL - REVERSE GEAR (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		30-30548 - Ball Bearing, NLA [ More info ] $33.00 10+ In Stock.
#69	15-29955A 1	SHIM, THRUST WASHER TO GEAR HOUSING (AR,AR required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		15-29955A 1 - Shim Set [ More info ] $27.08 10+ In Stock.
#70	12-30633	WASHER, THRUST - BEARING CARRIER TO GEAR HOUSING (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		12-30633 - 12-30633 - WASHER [ More info ] Unavailable Replaced by 12-65679
		12-65679 - 12-65679 - WASHER @4 [ More info ] Unavailable Replaced by 12-65679A1
		12-65679A1 - 12-65679A1 - ->71143A1 [ More info ] Unavailable Replaced by -71143A1
		12-71143A1 - WASHER NLA [ More info ] Unavailable
#62	43-31417	FORWARD GEAR ASSEMBLY (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		43-31417 - 43-31417 - FORWARD GEAR [ More info ] Unavailable Replaced by 43-31886
		43-31886 - 43-31886 - FORWARD GEAR [ More info ] Unavailable Replaced by 43-34085
#66	52-34239	RATCHET, SLIDING CLUTCH (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		52-34239 - 52-34239 - RATCHET [ More info ] Unavailable Replaced by 52-12777
		52-12777 - 52-12777 - RATCHET [ More info ] Unavailable Replaced by 52-814756
		52-814756 - 52-814756 - CLUTCH [ More info ] Unavailable Replaced by 52-822539
		52-822539 - 52-822539 - CLUTCH [ More info ] Unavailable Replaced by 52-822539T
		52-822539T - Clutch [ More info ] $287.92 Available to Order: Usually ships within 10 days.
		18-2236 - Clutch Dog 52-822539T [ More info ] $239.89 $217.38 1 In Stock.
#67	43-31418	REVERSE GEAR ASSEMBLY (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		43-31418 - 43-31418 - PROPELLER GEAR [ More info ] Unavailable Replaced by 43-31887
		43-31887 - Reverse Gear [ More info ] $406.50 8 In Stock.
#68	30-31262	BEARING, BALL - REVERSE GEAR (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		12-31262 - Washer, Upper Mount Bolt, NLA [ More info ] $1.25 10+ In Stock.
#70	12-31797	WASHER, THRUST - BEARING CARRIER TO GEAR HOUSING (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		12-31797 - Washer - Thrust - Bearing Carrier To Gear Housing [ More info ] $9.00 2 In Stock.
#71	25-29976	"O" RING, BEARING CARRIER (1,1 required per assembly)
		25-29976 - O-Ring, Bearing Carrier [ More info ] $5.90 10+ In Stock.
		18-7157 - O-Ring 25-29976 [ More info ] $4.98 $4.00 10+ In Stock.
#72	-30579A 1	BEARING CARRIER ASSY (4 45/64" OVERALL LENGTH) (1,1 required per assembly) USE ON ENGINES FROM SERIAL #1406322 AND BELOW
		30579A 1 - CARRIER ASSY NLA [ More info ] Unavailable
#72	-31284A 1	BEARING CARRIER ASSY (4 5/8" OVERALL LENGTH) (,1 required per assembly) USE ON ENGINES FROM SERIAL #1406323 AND UP
		31284A 1 - 31284A 1 - CARRIER ASSY [ More info ] Unavailable Replaced by -31284T 1
		31284T 1 - Carrier Assembly [ More info ] $41.24 10+ In Stock.
#73	31-30616	BEARING, ROLLER - BEARING CARRIER (2, required per assembly)
		31-30616 - Roller Bearing, NLA [ More info ] $6.00 10+ In Stock.
#73A	31-30956	BEARING, ROLLER - BEARING CARRIER (1,1 required per assembly)
		31-30956 - 31-30956 - BEARING Needle [ More info ] Unavailable Replaced by 31-30956T
		31-30956T - Roller Bearing [ More info ] $20.43 2 In Stock.
		18-1158 - Bearing 31-30956, 387247 [ More info ] $15.49 $14.07 4 In Stock.
#74	26-30550	OIL SEAL, BEARING CARRIER (1,1 required per assembly)
		26-30550 - 26-30550 - SEAL @5 [ More info ] Unavailable Replaced by 26-76868
		26-76868 - 26-76868 - SEAL [ More info ] Unavailable Replaced by -8M0204670
		26-8M0204670 - Gearcase Seal, Priced Individually E/J O/B [ More info ] $18.50 10+ In Stock.
		18-2002 - Seal 26-76868, 320862 [ More info ] $10.93 10+ In Stock.
#75	28-30281	KEY, LOCATING - BEARING CARRIER (1,1 required per assembly)
		28-30281 - Key - Priced Individually [ More info ] $2.90 4 In Stock.
#76	12-29957	WASHER, GEAR HOUSING COVER (1,1 required per assembly)
		12-29957 - Washer, Gear Housing Cover, NLA [ More info ] $12.99 10+ In Stock.
#77	-31037	COVER, GEAR HOUSING (1,1 required per assembly)
		31037 - 31037 - COVER [ More info ] Unavailable Replaced by -52699
		52699 - Gear Housing Cover [ More info ] $35.99 10+ In Stock.
		0775418 - Spanner Nut [ More info ] $31.49 $30.92 Available to Order: Usually ships within 10 days.
#78	12-31013	WASHER, THRUST - BEARING CARRIER (1,1 required per assembly)
		12-31013 - Thrust Washer, Bearing Carrier (split) [ More info ] $2.99 10+ In Stock.
#79	-30581A 1	THRUST HUB AND WASHER ASSEMBLY (1,1 required per assembly)
		30581A 1 - Hub Assembly, NLA [ More info ] $22.50 10+ In Stock.
#80	12-29590	WASHER, CUPPED - THRUST HUB (1,1 required per assembly)
		12-29590 - Washer, Cupped - Thrust Hub, NLA [ More info ] $6.38 10+ In Stock.
#81	48-31080A 1	PROPELLER ASSEMBLY, COMPLETE (2 BLADE - ALUMINUM) (1,1 required per assembly)
		48-31080A 1 - 48-31080A 1 - PROPELLER ASSY [ More info ] Unavailable Replaced by 48-32388A 3
		48-32388A 3 - 48-32388A 3 - PROPELLER ASSY [ More info ] Unavailable Replaced by 48-32750A 3
		48-32750A 3 - 48-32750A 3 - PROPELLER ASSY [ More info ] Unavailable Replaced by 48-65588A 1
		48-65588A 1 - ALUM 13.00X19.00 NLA [ More info ] Unavailable
#82	12-30967	WASHER, SPLINED - PROPELLER SHAFT (1, required per assembly)
		12-30967 - Washer, Splined - Propeller Shaft, NLA [ More info ] $2.50 10+ In Stock.
#82	12-31211	WASHER, SPLINED - PROPELLER SHAFT (,1 required per assembly)
		12-31211 - 12-31211 - WASHER [ More info ] Unavailable Replaced by 12-31211A2
		12-31211A2 - 12-31211A2 - ->31211A3 [ More info ] Unavailable Replaced by -31211A3
		12-31211A3 - 12-31211A3 - ->31211Q03 [ More info ] Unavailable Replaced by -31211Q03
		12-31211Q03 - Washer - Priced Individually [ More info ] $13.63 1 In Stock.
		18-3714 - Washer, 12-31211A2 [ More info ] $10.69 $9.71 10+ In Stock.
		12-31211K03 - Washer - Priced Individually [ More info ] $13.63 Available to Order: Usually ships within 10 days.
#83	14-30963	TAB WASHER, PROPELLER NUT (1, required per assembly)
		14-30963 - Tab Washer, NLA [ More info ] $1.50 10+ In Stock.
#83	14-31210	TAB WASHER, PROPELLER NUT (,1 required per assembly)
		14-31210 - 14-31210 - TAB WASHER [ More info ] Unavailable Replaced by 14-816629
		14-816629 - 14-816629 - TAB WASHER [ More info ] Unavailable Replaced by 14-816629Q
		14-816629Q - Tab Washer - Priced Individually [ More info ] $5.43 Available to Order: Usually ships within 10 days.
		18-3200-9 - Washer, 14-816629, 10PK [ More info ] $65.67 3 In Stock.
		14-816629K - Tab Washer - Priced Individually [ More info ] $5.47 Available to Order: Usually ships within 10 days.
#84	11-29594	NUT, PROPELLER (1,1 required per assembly)
		11-29594 - Prop Nut [ More info ] $17.99 10+ In Stock.
#85	10-30206	SCREW, GEAR HOUSING TO DRIVE SHAFT HOUSING (1") (1,1 required per assembly)
		10-30206 - Screw - Priced Individually [ More info ] $4.00 10+ In Stock.
		18-2361-9 - Screw, 10-30206, 2PK [ More info ] $3.98 $2.60 2 In Stock.
#86	-31237	WATER PICKUP, GEAR HOUSING (1,1 required per assembly)
		31237 - Water Pickup, NLA [ More info ] $7.00 10+ In Stock.
#87	27-30557	GASKET, WATER PICKUP TO GEAR HOUSING (1,1 required per assembly)
		27-30557 - Water Pickup To Gear Housing Gasket [ More info ] $5.99 10+ In Stock.
#88	10-30559	SCREW, WATER PICKUP TO GEAR HOUSING (2 1/4") (1,1 required per assembly)
		10-30559 - Screw, NLA [ More info ] $4.20 $2.35 10+ In Stock.
#89	13-26993	LOCKWASHER, WATER PICKUP FASTENING SCREW (1,1 required per assembly)
		13-26993 - LockWasher - Priced Individually [ More info ] $1.10 10+ In Stock.
		13-8M0204647 - LOCKWASHER @5 [ More info ] Unavailable