Parts for MerCruiser 255-TRS 1973-1974 Gear Housing Assembly, Complete

Revise Search: All Models > 255-TRS 1973-1974 > 3377316 - 4203749 > Gear Housing Assembly, Complete

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

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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 ]

#	1646-5321A13	GEAR HOUSING ASSEMBLY, COMPLETE RIGHT HAND ROTATION) (1 required per assembly) MERCRUISER 280 TRS
		1646-5321A13 - CALL 920-872-272,NLA [ More info ] Unavailable
#	1646-5321A 4	GEAR HOUSING ASSEMBLY, COMPLETE (RIGHT HAND ROTATION) (1 required per assembly) MERCRUISER 255 TRS
		1646-5321A 4 - GEAR Housing, NLA [ More info ] Unavailable
#	1646-5321A14	GEAR HOUSING ASSEMBLY, COMPLETE (LEFT HAND ROTATION) (1 required per assembly) MERCRUISER 280 TRS
		1646-5321A14 - GEAR Housing, NLA [ More info ] Unavailable
#	1646-5321A 5	GEAR HOUSING ASSEMBLY, COMPLETE (LEFT HAND ROTATION) (1 required per assembly) MERCRUISER 255 TRS
		1646-5321A 5 - GEAR Housing, NLA [ More info ] Unavailable
#1	1646-5321A 6	GEAR HOUSING ASSEMBLY (1 required per assembly)
		1646-5321A 6 - Gearcase,NLA [ More info ] Unavailable
#2	16-57982	STUD, GEAR HOUSING TO DRIVE SHAFT HOUSING (1 7/8") (1 required per assembly)
		16-57982 - Stud [ More info ] $9.00 3 In Stock.
		16-8M0041668 - Stud [ More info ] $14.90 Available to Order: Usually ships within 10 days.
#3	31-68290	ROLLER BEARING, DRIVE SHAFT (1 required per assembly)
		31-68290 - Roller Bearing - Drive Shaft [ More info ] $27.78 1 In Stock.
		31-68290A 1 - Bearing - Roller [ More info ] $213.75 1 In Stock.
#4	10-28634	SCREW, VENT - GEAR HOUSING (1 required per assembly)
		10-28634 - Drain Screw ONLY, Priced Individually [ More info ] Unavailable
		10-79953 - Drain Screw ONLY, Priced Individually [ More info ] Unavailable
		10-79953A 2 - Drain Screw Kit [ More info ] Unavailable
		10-79953Q 2 - Screw Kit - Priced Individually [ More info ] Unavailable
		10-79953Q04 - Screw Kit - Priced Individually [ More info ] $7.20 10+ In Stock.
		18-2244 - Plug Kit, 10-79953A2 [ More info ] $3.59 10+ In Stock.
		10-79953K04 - Drain Screw - Priced Individually [ More info ] $7.20 10+ In Stock.
#5	12-20260	WASHER, SEAL - VENT SCREW (1 required per assembly)
		12-20260 - Sealing Washer [ More info ] Unavailable
		12-19183 - Washer (3/8 Inch Screw) [ More info ] Unavailable
		12-19183 2 - Washer - Priced Individually [ More info ] Unavailable
		12-19183 3 - Seal -Blue - Priced Individually [ More info ] $1.40 10+ In Stock.
		18-2945-9 - Gasket 12-19183 2-Pack [ More info ] $2.29 10+ In Stock.
		12-19183Q02 - Seals, Pack of 4 (yes this is actually a pack of 4) [ More info ] $6.40 10+ In Stock.
		12-19183K02 - Seal, Pack of 4 [ More info ] $6.40 10+ In Stock.
#6	43-66665	GEAR, PINION - MERCRUISER 255 TRS (1 required per assembly)
		43-66665 - Pinion Gear,NLA [ More info ] Unavailable
#6	43-70934	GEAR, PINION - MERCRUISER 280 TRS (1 required per assembly)
		43-70934 - Pinion Gear (16 Teeth) [ More info ] Unavailable
		43-70934T 1 - Pinion Gear [ More info ] Unavailable
#7	12-54048	WASHER, PINION GEAR TO DRIVE SHAFT (1 required per assembly)
		12-54048 - Washer [ More info ] $3.99 10+ In Stock.
#8	11-55819	NUT, PINION GEAR TO DRIVE SHAFT (1 required per assembly)
		11-55819 - Nut, Pinion Gear To Drive Shaft,NLA [ More info ] $19.99 10 In Stock.
#9	45-66666	DRIVE SHAFT (1 required per assembly)
		45-66666 - Drive Shaft, NLA [ More info ] Unavailable
#10	15-66672A 1	SHIM ASS'Y, ROLLER BEARING TO GEAR HOUSING (.002-3-5-10-20) (AR required per assembly)
		15-66672A 1 - Shim Set, NLA [ More info ] $9.99 2 In Stock.
#11	31-68266A 1	TAPERED ROLLER BEARING ASSEMBLY, DRIVE SHAFT (1 required per assembly)
		31-68266A 1 - Tapered Roller Bearing [ More info ] $102.50 $87.12 2 In Stock.
#12	31-66670A 1	TAPERED ROLLER BEARING ASSIMBLY, DRIVE SHAFT (1 required per assembly)
		31-66670A 1 - Bearing Kit [ More info ] $42.50 Available to Order: Usually ships within 10 days.
#13	25-54030	"O" RING, GEAR HOUSING TO DRIVE SHAFT HOUSING (1 required per assembly)
		25-54030 - O-ring, (2.987 X .103) [ More info ] $5.70 7 In Stock.
#14	31640A 1	TRIM TAB ASSEMBLY, GEAR HOUSING (1 required per assembly)
		31640A 1 - Trim Tab [ More info ] Unavailable
		31640 3 - 31640 3 - TRIM TAB [ More info ] Unavailable Replaced by -31640 4
		31640 4 - Anode/Trim Tab [ More info ] Unavailable
		97-31640Q4 - Anode/Trim Tab [ More info ] $17.92 3 In Stock.
		18-6241 - Trim Tab Anode, Magnesium, 31640 [ More info ] $24.39 $22.37 4 In Stock.
		18-6011A - Trim Tab Anode, Aluminum [ More info ] $16.59 $15.04 4 In Stock.
		18-6011 - Trim Tab, Zinc, 31640A1 [ More info ] $18.35 10+ In Stock.
		97-31640T 4 - Trim Tab Anode [ More info ] $17.92 10+ In Stock.
#15	10-49354	SCREW, TRIM TAB TO GEAR HOUSING (2 1/2") (1 required per assembly)
		10-49354 - Screw [ More info ] Unavailable
		10-41350 - Screw [ More info ] $26.33 $22.38 10+ In Stock.
#16	15-47397A 1	SHIM ASS'Y, ROLLER BEARING TO GEAR HSG. (.002-3-5-10-20) (AR required per assembly) LEFT HAND ROTATION
		15-47397A 1 - Shim Set [ More info ] $19.30 $10.82 10+ In Stock.
		18-2285 - Shim 15-47397A1 [ More info ] $30.99 $20.94 In Stock
#17	31-35928A 1	TAPERED ROLLER BEARING ASSEMBLY, PROPELLER GEAR (1 required per assembly) LEFT HAND ROTATION
		31-35928A 1 - Tapered Roller Bearing [ More info ] $36.66 10+ In Stock.
		31-35928T 1 - Tapered Roller Bearing [ More info ] $87.92 $46.42 10+ In Stock.
		18-1159 - Bearing 31-35928A1 [ More info ] $40.07 $35.21 1 In Stock.
#18	44-66661	PROPELLER SHAFT (1 required per assembly) LEFT HAND ROTATION
		44-66661 - Propeller Shaft [ More info ] Unavailable
		44-92327 - Prop Shaft [ More info ] Unavailable
		44-92327T 1 - Prop Shaft, NLA [ More info ] $750.00 5 In Stock.
#19	31-66668A 1	TAPERED ROLLER BEARING ASSIMBLY (1 required per assembly) LEFT HAND ROTATION
		31-66668A 1 - Tapered Roller Bearing [ More info ] Unavailable
		31-99328A 1 - Roller Bearing [ More info ] $36.11 1 In Stock.
		31-8M0103470 - Bearing Assembly, Captive [ More info ] $44.25 In Stock
#16	15-47397A 1	SHIM ASS'Y, ROLLER BEARING TO GEAR HSG. (.002-3-5-10) (AR required per assembly) RIGHT HAND ROTATION
#18	44-66662	PROPELLER SHAFT (1 required per assembly) RIGHT HAND ROTATION
		44-66662 - Prop Shaft [ More info ] Unavailable
		44-92328 - Prop Shaft [ More info ] Unavailable
#20	43-66664	GEAR, DRIVE - MERCRUISER 255 TRS (1 required per assembly)
		43-66664 - Drive Gear [ More info ] $90.00 2 In Stock.
#20	43-70933	GEAR, DRIVE - MERCRUISER 280 TRS (1 required per assembly)
		43-70933 - Drive Gear -18T [ More info ] Unavailable
#21	12-66667	THRUST RING (1 required per assembly)
		12-66667 - Washer, Thrust Ring, NLA [ More info ] $10.00 10+ In Stock.
#22	67440	RING, LOAD - THRUST RING (1 required per assembly)
		67440 - Load Ring [ More info ] Unavailable
		67440T - Load Ring [ More info ] $40.17 In Stock
#23	25-31534	"O" RING, BEARING CARRIER TO THRUST RING (1 required per assembly)
		25-31534 - O-Ring, Bearing Carrier [ More info ] $5.54 10 In Stock.
		25-8M0214920 - BELL HOUSING O-RING Note: Priced Individually [ More info ] $6.10 Available to Order: Usually ships within 10 days.
#24	66663A 1	BEARING CARRIER ASSEMBLY (1 required per assembly)
		66663A 1 - Carrier Assembly [ More info ] Unavailable
#25	31-30956	BEARING, ROLLER - BEARING CARRIER (1 required per assembly)
		31-30956 - Roller Bearing - Bearing Carrier [ More info ] Unavailable
		31-30956T - Roller Bearing [ More info ] $20.43 5 In Stock.
		18-1158 - Bearing 31-30956, 387247 [ More info ] $15.99 $14.48 4 In Stock.
#26	26-76868	OIL SEAL, BEARING CARRIER (2 required per assembly)
		26-76868 - Gearcase Seal - Priced Individually [ More info ] Unavailable
		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 ] $13.99 10+ In Stock.
#27	28-30281	KEY, LOCATING - BEARING CARRIER (1 required per assembly)
		28-30281 - Key - Priced Individually [ More info ] $2.90 Available to Order: Usually ships within 10 days.
#28	14-52833	TAB WASHER, GEAR HOUSING COVER (1 required per assembly)
		14-52833 - Tab Washer [ More info ] $1.50 10+ In Stock.
		14-79447 - Tab Washer - Priced Individually [ More info ] $13.20 8 In Stock.
		18-2299 - Shim 14-79447 [ More info ] $8.99 $8.14 2 In Stock.
#29	52834	COVER, GEAR HOUSING (1 required per assembly)
		52834 - Gear Housing Cover [ More info ] $9.38 1 In Stock.
		79448 - Retainer [ More info ] Unavailable
		8M2011027 - Bearing Car Retaining Nut [ More info ] Unavailable
		18-3751 - Nut, 79448 [ More info ] $28.99 $26.26 10+ In Stock.
		8M0168577 - Bearing Carrier Retaining Nut [ More info ] $40.92 In Stock
#30	56292A 1	THRUST HUB AND WASHER ASSEMBLY (1 required per assembly)
		56292A 1 - Thrust Hub [ More info ] $8.00 10 In Stock.
		56292A 2 - Thrust Washer [ More info ] $8.89 10+ In Stock.
		56292A 4 - Thrust Washer Assembly [ More info ] $14.00 2 In Stock.
		56292Q04 - Thrust Washer - Priced Individually [ More info ] $30.56 8 In Stock.
#31	12-35965	WASHER, THRUST - THRUST HUB (1 required per assembly)
		12-35965 - Washer, Cupped - Thrust Hub, NLA [ More info ] $4.95 10+ In Stock.
#32	12-31211	WASHER, THRUST HUB (1 required per assembly)
		12-31211 - Washer, Splined - Propeller Nut [ More info ] Unavailable
		12-31211A 2 - Thrust Washer [ More info ] Unavailable
		12-31211A 3 - Washer, Splined - Propeller Shaft [ More info ] Unavailable
		12-31211Q03 - Washer - Priced Individually [ More info ] $14.45 1 In Stock.
		18-3714 - Washer, 12-31211A2 [ More info ] $10.69 10+ In Stock.
		12-31211K03 - Washer - Priced Individually [ More info ] $14.11 Available to Order: Usually ships within 10 days.
#33	14-31210	TAB WASHER, PROPELLER NUT (1 required per assembly)
		14-31210 - Tab Washer - Priced Individually [ More info ] Unavailable
		14-816629 - Tab Washer [ More info ] $3.99 10+ In Stock.
		14-816629Q - Tab Washer - Priced Individually [ More info ] $5.75 1 In Stock.
		18-3200-9 - Washer, 14-816629, 10PK [ More info ] $78.09 $71.73 6 In Stock.
		14-816629K - Tab Washer - Priced Individually [ More info ] $5.66 Available to Order: Usually ships within 10 days.
#34	11-52707	NUT, PROPELLER (1 required per assembly)
		11-52707 - Nut, Propeller [ More info ] Unavailable
		11-52707A 1 - Prop Nut Kit [ More info ] Unavailable
		11-52707Q 1 - Prop Nut Kit - Priced Individually [ More info ] $16.01 1 In Stock.
		18-3701 - Nut Kit, 11-52707A1 [ More info ] $23.99 $21.76 8 In Stock.
		18-3700 - Prop Nut Only, 11-52707 [ More info ] $13.99 $13.89 2 In Stock.
		11-52707T 1 - Prop Nut Kit - Priced Individually [ More info ] $16.01 4 In Stock.
#35	25-54029	"O" RING, GEAR HOUSING TO DRIVE SHAFT HOUSING (1 required per assembly)
		25-54029 - O-ring (2.8 X .103 In) [ More info ] $4.00 10+ In Stock.
#36	10-47557	SCREW, GEAR HOUSING TO DRIVE SHAFT HOUSING (1 1/2") (1 required per assembly)
		10-47557 - Screw, NLA [ More info ] $3.33 10+ In Stock.
#37	11-34933	NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING STUD (1 required per assembly)
		11-34933 - Nut (7/16-20) [ More info ] Unavailable
		11-8M0204653 - Prop Lock Nut 7/16-20 , Priced Individually [ More info ] $5.10 8 In Stock.
		18-3721-9 - Lock Nut, 11-34933, 5PK [ More info ] $19.49 $13.18 Available to Order: Usually ships within 10 days.