Parts for MerCruiser 260 1978-1982 Gear Housing Assembly, Complete

Revise Search: All Models > 260 1978-1982 > 4898730 - 6225576 > Gear Housing Assembly, Complete

NEED PARTS OR KITS?
• View diagram and parts list below.
Each product listed is an OEM or aftermarket equivalent part. [ Example ]

LOOKING FOR A PROP?
• Try our prop finder.

COMPLETE GEARCASE?
• Aftermarket lower units and upper units may be available. 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 ]

#-	1623-5356A20	GEAR HOUSING ASSEMBLY (1 required per assembly)
		1623-5356A20 - 1623-5356A20 - GEAR HOUSING ASSE O [ More info ] Unavailable Replaced by 1623-8951A 2
		1623-8951A 2 - 1623-8951A 2 - GEAR HOUSING ASSE O [ More info ] Unavailable Replaced by 1623-8951A19
		1623-8951A19 - 1623-8951A19 - GEAR CASE ASSY O [ More info ] Unavailable Replaced by 1623-8951A23
		1623-8951A23 - 1623-8951A23 - GEARCASE ASY COMP O [ More info ] Unavailable Replaced by 1623-8951A43
		1623-8951A43 - Gearcase Alpha [ More info ] $2,128.57 Available to order: Usually ships within 8 days.
		18-2443 - Lower Assembly, [ More info ] $2,238.00 $1,806.04 Available to order: Usually ships within 8 days.
		90-106-02 - SE106 Lower Unit Mercruiser Alpha One, Standard Rotation - Special Order - No Returns [ More info ] $795.00 $795.00 Call to order
#1	1623-5356A 4	GEAR HOUSING ASSEMBLY (1 required per assembly)
		1623-5356A 4 - Gearcase MC-I - Basic [ More info ] $1,193.36 $148.50 10+ in stock.
		18-2402 - Housing, 1623-5356A4 [ More info ] $1,362.34 2 in stock.
#2	17-37972	PIN, SHIFT CRANK-GEAR HOUSING (1 required per assembly)
		17-37972 - Pin [ More info ] $1.15 10+ in stock.
		17-37972 1 - Pin [ More info ] $2.70 2 in stock.
#3	16-46911	STUD, GEAR HOUSING TO DRIVESHAFT HOUSING (3 3/16") (1 required per assembly)
		16-46911 - Stud [ More info ] $5.70 $3.85 10+ in stock.
#4	16-56298	STUD, GEAR HOUSING TO DRIVESHAFT HOUSING (1 31/32") (2 required per assembly)
		16-56298 - Stud [ More info ] $3.50 10+ in stock.
#5	26-45577	SEAL, GEAR HOUSING (1 required per assembly)
		26-45577 - 26-45577 - SEAL O [ More info ] Unavailable Replaced by 26-45577 1
		26-45577 1 - Seal - Priced Individually [ More info ] $3.20 $2.16 10+ in stock.
		18-2944-9 - Gasket 26-45577 2-Pack [ More info ] $5.98 $3.86 10+ in stock.
#6	16-56297	STUD, (.312 x 3.38), WATER PUMP BASE AND BODY TO GEAR HOUSING (3 3/8") (1 required per assembly)
		16-56297 - Stud [ More info ] $8.80 10+ in stock.
		16-56297 2 - 16-56297 2 - STUD (.312-18/.32 O [ More info ] Unavailable Replaced by 16-8M0034463
		16-8M0034463 - Stud [ More info ] $5.80 Available to order: Usually ships within 8 days.
#7	16-69501	STUD, WATER PUMP BASE AND BODY TO GEAR HOUSING (3 1/4") (2 required per assembly)
		16-69501 - Stud [ More info ] $2.70 10+ in stock.
#8	17-85500	PIN, Dowel (.187 x .530), GEAR HOUSING TO DRIVESHAFT HOUSING (2 required per assembly)
		17-85500 - Pin -Dowel [ More info ] $3.00 10+ in stock.
		178M0084726 - Pin - Dowel [ More info ] $3.80 Available to order: Usually ships within 8 days.
#9	31-92366	BEARING, ROLLER-DRIVESHAFT (1 required per assembly)
		31-92366 - Roller Bearing [ More info ] $19.00 5 in stock.
		31-92366A 1 - Bearing Assembly [ More info ] $69.75 $23.57 10+ in stock.
		18-1150 - Bearing 31-92366A1 - Special Order - No Returns [ More info ] $70.93 In stock - special order item.
#10	66884	INSERT, WATER PICKUP (1 required per assembly) (PORT SIDE)
		66884 - Water Pickup Insert [ More info ] $14.00 10+ in stock.
#10	66885	INSERT, WATER PICKUP (1 required per assembly) (STARBOARD SIDE)
		66885 - Water Pickup Insert [ More info ] $12.60 10+ in stock.
#11	10-76156	SCREW, (#10-32 x 1.88), INSERT TO GEAR HOUSING (1 required per assembly)
		10-76156 - Screw [ More info ] $2.60 10+ in stock.
		18-3197 - Screw, Insert 18-3197 [ More info ] $2.38 $1.79 2 in stock.
#12	11-45812	NUT, (#10-32) Stainless Steel, INSERT SCREW (1 required per assembly)
		11-45812 - Nut - Priced Individually [ More info ] $2.25 5 in stock.
		11-859124 - Nut - Priced Individually [ More info ] $14.08 10 in stock.
#13	45-55757A 1	DRIVESHAFT ASSEMBLY (1 required per assembly)
		45-55757A 1 - Drive Shaft [ More info ] $210.00 2 in stock.
		45-41939A 1 - Drive Shaft [ More info ] $210.00 6 in stock.
		45-41939F 1 - Drive Shaft - Black [ More info ] $175.00 10+ in stock.
#14	17-30545	PIN, DRIVESHAFT (1 required per assembly)
		17-30545 - Pin - Priced Individually [ More info ] $4.50 10+ in stock.
#15	24-34576	SPRING, COMPRESSION-DRIVESHAFT (1 required per assembly)
		24-34576 - Spring [ More info ] $7.50 10+ in stock.
#16	25-30613	O-RING, UPPER-DRIVESHAFT (1 required per assembly)
		25-30613 - O-Ring - Priced Individually [ More info ] $1.40 10+ in stock.
		18-7158-9 - (PK5) O-Ring 25-30613 [ More info ] $9.95 $4.42 3 in stock.
#17	43-96084A 4	GEAR SET (INCLUDES PINION, FORWARD AND REVERSE GEARS) (1 required per assembly)
		43-96084A 4 - Gear Set [ More info ] $743.36 $148.50 10 in stock.
		18-2200 - Gear Set 43-96084A4 [ More info ] $663.71 $658.08 In stock
#18	11-35921	NUT, (.625-18), PINION GEAR TO DRIVESHAFT (1 required per assembly)
		11-35921 - Nut - Priced Individually [ More info ] $5.50 $3.09 10+ in stock.
		18-3719 - Nut, 11-35921, 314730 [ More info ] $4.95 $3.20 9 in stock.
		18-2359 - Nut Kit [ More info ] $8.49 $6.23 Available to order: Usually ships within 8 days.
#19	15-57007A 1	SHIM, DRIVESHAFT BEARING TO GEAR HOUSING (.002-3-5-10-20) (AR required per assembly)
		15-57007A 1 - Shim Set [ More info ] $45.83 $6.24 10+ in stock.
		18-2295 - Shim Set, 15-57007A 1 [ More info ] $6.64 2 in stock.
#20	31-53079A 1	BEARING ASSEMBLY, Tapered Roller, DRIVESHAFT (1 required per assembly)
		31-53079A 1 - Bearing Kit [ More info ] $30.17 10+ in stock.
		18-1164 - Bearing 31-53079A1 [ More info ] $40.84 $27.15 Available to order: Usually ships within 8 days.
#21	27-33146	GASKET, WATER PUMP BASE TO GEAR HOUSING (1 required per assembly)
		27-33146 - Gasket - Priced Individually [ More info ] $1.00 10+ in stock.
		27-85610 - Gasket - Priced Individually [ More info ] $1.40 8 in stock.
		27-85610 1 - Gasket - Priced Individually [ More info ] $1.60 10+ in stock.
		27-856704 - Gasket - Priced Individually [ More info ] $2.60 10+ in stock.
		18-2826-9 - Gasket 27-33146 2-Pack [ More info ] $6.30 $3.45 5 in stock.
#22	25-33145	O-RING, (1.984 x .139), WATER PUMP BASE (1 required per assembly)
		25-33145 - O-Ring - Priced Individually [ More info ] $2.90 10+ in stock.
		18-7162-9 - (PK5) O-Ring 25-33145 [ More info ] $15.41 $8.31 4 in stock.
#23	46-57234A 1	BASE ASSEMBLY, Water Pump (1 required per assembly)
		46-57234A 1 - Water Pump Base [ More info ] $43.00 $20.64 2 in stock.
		18-3417 - Water Pump Base 46-57234A1 [ More info ] $31.95 $25.76 1 in stock.
#24	26-89238	SEAL, Oil, WATER PUMP BASE (1 required per assembly)
		26-89238 - Seal [ More info ] $18.60 $11.16 10+ in stock.
		18-2014 - Seal 26-89238, 26F69430 [ More info ] $15.99 $10.76 7 in stock.
#25	26-79884	SEAL, Oil, WATER PUMP BASE (1 required per assembly)
		26-79884 - Oil Seal [ More info ] $8.00 10+ in stock.
		26-16977 - Seal [ More info ] $16.30 $13.96 10+ in stock.
		18-2026 - Seal, 321453 [ More info ] $14.42 $10.05 10+ in stock.
		18-2013 - Seal, 26-16977 [ More info ] $14.94 $10.14 4 in stock.
#26	17-35973	PIN, Dowel, WATER PUMP BASE TO WATER PUMP BODY (2 required per assembly)
		17-35973 - Pin -Dowel - Priced Individually [ More info ] $1.40 10+ in stock.
		18-3227-9 - Pin, 17-35973, 5PK [ More info ] $9.95 $8.31 1 in stock.
#27	27-32433	GASKET, LOWER-WATER PUMP BASE TO FACE PLATE (1 required per assembly)
		27-32433 - 27-32433 - GASKET O [ More info ] Unavailable Replaced by 27-85608
		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 ] $3.10 10+ in stock.
		18-2914-9 - Gasket 27-85608 2-Pack [ More info ] $6.16 $3.92 10+ in stock.
#28	32435	FACE PLATE, WATER PUMP BASE TO WATER PUMP BODY (1 required per assembly)
		32435 - Face Plate - Priced Individually [ More info ] $4.15 10+ in stock.
		32435 1 - Face Plate [ More info ] $7.00 Available to order: Usually ships within 8 days.
		18-3117 - Plate, 32435 [ More info ] $5.99 $4.16 4 in stock.
#29	27-32434	GASKET, UPPER-FACE PLATE TO WATER PUMP BODY (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 - Gasket , Priced Individually [ More info ] $1.70 10+ in stock.
		27-858524 - Gasket - Priced Individually [ More info ] $3.00 10+ in stock.
		18-2915-9 - Gasket 27-858524 2-Pack [ More info ] $5.14 $3.56 10+ in stock.
#30	46-64141A 1	BODY ASSEMBLY, Water Pump (1 required per assembly)
		46-64141A 1 - 46-64141A 1 - BODY ASSEMBLY Wat O [ More info ] Unavailable Replaced by 46-96148A 1
		46-96148A 1 - 46-96148A 1 - BODY ASSEMBLY Wat O [ More info ] Unavailable Replaced by 46-96148T 1
		46-96148T 1 - Water Pump Body [ More info ] $54.10 $46.32 Available to order: Usually ships within 8 days.
		18-3116 - Housing 46-96148A1 [ More info ] $39.16 $31.58 8 in stock.
#31	48752	INSERT, WATER PUMP BODY (1 required per assembly)
		48752 - 48752 - INSERT O [ More info ] Unavailable Replaced by -48752T
		48752T - Water Pump Insert - Priced Individually [ More info ] $9.50 Available to order: Usually ships within 8 days.
		18-3114 - SS Cup, 48752 [ More info ] $7.99 $6.28 7 in stock.
#33	26-38970	SEAL, RUBBER-WATER INLET TUBE (1 required per assembly)
		26-38970 - Seal - Priced Individually [ More info ] $3.80 $2.28 10+ in stock.
		18-3110 - Seal, 26-38970 [ More info ] $3.49 $2.41 10+ in stock.
#34	47-89984	IMPELLER, WATER PUMP (1 required per assembly)
		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 ] $26.49 10+ in stock.
		18-3017 - Impeller 47-89984 [ More info ] $20.49 $13.98 10+ in stock.
#35	28-56654	KEY, IMPELLER DRIVE (1 required per assembly)
		28-56654 - 28-56654 - KEY O [ More info ] Unavailable Replaced by 28-8M0032834
		28-8M0032834 - Key - Priced Individually [ More info ] $3.40 10+ in stock.
#36	10-30720	SCREW, (.250-20 x 2.25), WATER PUMP BODY TO GEAR HOUSING (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 1 in stock.
#37	12-36001	WASHER, WATER PUMP BODY SCREW (1 required per assembly)
		12-36001 - Washer - Priced Individually [ More info ] $1.00 10+ in stock.
		18-4270-9 - Washer, 12-36001, 2PK [ More info ] $4.98 $2.37 2 in stock.
#38	11-35888	NUT, (.250-28) Stainless Steel, WATER PUMP BODY STUDS (1/4-28) (2 required per assembly)
		11-35888 - Nut - Priced Individually [ More info ] $5.10 $2.05 10+ in stock.
		18-3722-9 - Lock Nut, 121731, 11-35888 [ More info ] $15.10 $7.72 2 in stock.
#39	11-45592	NUT, (.312-24), WATER PUMP BODY STUDS (1 required per assembly)
		11-45592 - Nut - Priced Individually [ More info ] $2.00 10+ in stock.
		11-826709111 - Nut - Priced Individually [ More info ] $3.30 Available to order: Usually ships within 8 days.
		18-3723-9 - Lock Nut, 11-45592, 5PK [ More info ] $17.45 $11.42 6 in stock.
#40	12-29245	WASHER, (.281 x .500 x .060) Stainless Steel, WATER PUMP BODY STUD (3 required per assembly)
		12-29245 - Washer [ More info ] $0.90 10+ in stock.
		18-4275 - SS Washer [ More info ] $1.99 $1.65 Available to order: Usually ships within 8 days.
#41	25-30271	RING, Rubber, CENTRIFUGAL SLINGER (DRIVESHAFT) (1 required per assembly)
		25-30271 - Ring - Priced Individually [ More info ] $1.50 10+ in stock.
$Slinger\\O-Ring$		18-7426-9 - O-Ring (PK2) 25-30271 [ More info ] $4.02 $1.78 4 in stock.
#42	23-29804	SLEEVE, GUIDE-WATER INLET TUBE (1 required per assembly)
		23-29804 - 23-29804 - SLEEVE O [ More info ] Unavailable Replaced by 23-29804T
		23-29804T - Sleeve - Priced Individually [ More info ] $6.90 9 in stock.
		18-3109 - Tube 23-29804 [ More info ] $5.49 $4.16 10+ in stock.
#43	77481	SHAFT, SHIFT-LOWER (1 required per assembly)
		77481 - 77481 - SHAFT O [ More info ] Unavailable Replaced by -77481 1
		77481 1 - Shift Shaft - Lower [ More info ] $48.25 $34.74 10+ in stock.
#44	18-20233	CLIP, RETAINING-SHIFT SHAFT (1 required per assembly)
		18-20233 - Pin, Hair-Ext, Priced Individually [ More info ] $0.90 10+ in stock.
		53-29641 - E Ring - Priced Individually [ More info ] $1.40 7 in stock.
		18-4295-9 - Clip, 53-29461, 2PK [ More info ] $2.98 $1.83 10+ in stock.
#45	12-27880	WASHER, LOWER SHIFT SHAFT AND CRANK (1 required per assembly)
		12-27880 - Washer [ More info ] $1.30 9 in stock.
#46	25-25439	O-RING, (.862 x .103), SHIFT SHAFT BUSHING (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 ] $10.26 $4.46 8 in stock.
#47	23-30617A 2	BUSHING ASSEMBLY, SHIFT SHAFT (1 required per assembly)
		23-30617A 2 - 23-30617A 2 - BUSHING ASSEMBLY * [ More info ] Unavailable Replaced by 23-8M0112749
		23-8M0112749 - Shift Shaft Bushing ZZ [ More info ] $22.50 Available to order: Usually ships within 8 days.
		18-2154 - Bushing, 23-30617A2 [ More info ] $20.13 $15.88 4 in stock.
#48	26-89236	SEAL, Oil, SHIFT SHAFT BUSHING (1 required per assembly)
		26-89236 - Seal [ More info ] $6.50 10+ in stock.
		26-89236 1 - Seal [ More info ] $12.50 $7.01 10+ in stock.
		18-2009 - Seal, 26-89236 [ More info ] $10.81 $7.51 10+ in stock.
#49	12-31266	WASHER, RUBBER-SHIFT SHAFT BUSHING (1 required per assembly)
		12-31266 - Washer - Priced Individually [ More info ] $0.80 Available to order: Usually ships within 8 days.
		18-2340-9 - Washer, 12-31266, 5PK [ More info ] $7.45 $2.85 2 in stock.
#50	12-29395	WASHER, (.390 x 1.00 x .06), SHIFT SHAFT (1 required per assembly)
		12-29395 - Washer - Priced Individually [ More info ] $0.80 10+ in stock.
		12-8M0042641 - Washer [ More info ] $1.30 1 in stock.
		18-4267-9 - Washer, 12-29395, 2PK [ More info ] $6.59 $2.73 2 in stock.
#51	10-79953	SCREW, (.375-16 x .250), GEAR HOUSING GREASE FILLER AND VENT HOLE (1 required per assembly)
		10-79953 - 10-79953 - SCREW (.375-16 x O [ More info ] Unavailable Replaced by 10-79953A 2
		10-79953A 2 - Drain Screw Kit [ More info ] $3.50 10+ in stock.
		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 ] $5.90 10+ in stock.
		18-2244 - Plug Kit, 10-79953A2 [ More info ] $3.08 $2.16 10+ in stock.
		10-79953K04 - Drain Screw - Priced Individually [ More info ] $5.90 10+ in stock.
#52	12-20260	WASHER, GEAR HOUSING GREASE FILLER AND VENT HOLE SCREW (1 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 ] $5.20 1 in stock.
		12-19183K02 - Seal, Pack of 4 [ More info ] $5.20 Available to order: Usually ships within 8 days.
#-	26-33144A 2	SEAL KIT (1 required per assembly)
		26-33144A 2 - Seal Kit [ More info ] $75.58 $74.82 10+ in stock.
		18-2652 - Seal Kit, 26-33144A2 [ More info ] $63.99 $38.37 8 in stock.
#-	26-32511A 1	SEAL KIT (1 required per assembly)
		26-32511A 1 - Seal Kit [ More info ] $57.75 $33.26 2 in stock.
		18-2648 - Seal Kit, 26-32511A1 [ More info ] $42.85 $17.25 10+ in stock.
#-	46-96148A 8	BODY ASSEMBLY, Water Pump (1 required per assembly)
		46-96148A 8 - Water Pump Kit, No Base [ More info ] $54.00 Available to order: Usually ships within 8 days.
		18-3517 - Water Pump Kit, No Base, 46-96148A8 [ More info ] $70.49 $27.56 10+ in stock.
		18-3319 - Water Pump Kit 46-42579A4, With Base 18-3419 [ More info ] $48.99 $37.83 10+ in stock.
		18-3317 - Mercury Water Pump Kit, With Base 18-3417 [ More info ] $53.99 $39.41 10+ in stock.
		18-3316 - Water Pump Kit 46-78400A2, With Base 18-3416 [ More info ] $56.99 $41.58 10+ in stock.
		46-96148T 8 - Water Pump Kit, No Base [ More info ] $54.00 Available to order: Usually ships within 8 days.
#-	43-96084A 2	GEAR REPLACEMENT KIT (1 required per assembly)
		43-96084A 2 - Gear Set [ More info ] $125.00 10+ in stock.
		43-96084A08 - Gear Set [ More info ] $1,279.65 $277.41 Available to order: Usually ships within 8 days.