Parts for MerCruiser Alpha One SS 1986-1989 Gear Housing Assembly (Driveshaft) (Alpha One-ss)

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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 ]

#	26-33144A 2	SEAL KIT (1 required per assembly)
		26-33144A 2 - Seal Kit [ More info ] $95.83 In Stock
		18-2652 - Seal Kit, 26-33144A2 [ More info ] $78.37 7 In Stock.
#1	1647-9559A 5	GEAR HOUSING ASSEMBLY (BASIC) (1 required per assembly)
		1647-9559A 5 - Gear Housing Assembly [ More info ] Unavailable
		1647-9559T 5 - Gear Housing,NLA [ More info ] Unavailable
#2	17-37972 1	PIN (1 required per assembly)
		17-37972 1 - Pin [ More info ] $3.50 Available to Order: Usually ships within 10 days.
#3	16-56298	STUD (.437-14 x 1.970) (2 required per assembly)
		16-56298 - Stud [ More info ] $4.50 1 In Stock.
#4	16-56297	STUD, (.312 x 3.38) (1 required per assembly)
		16-56297 - Stud [ More info ] $12.21 10+ In Stock.
		16-56297 2 - Stud [ More info ] Unavailable
		16-8M0034463 - Stud [ More info ] $17.17 Available to Order: Usually ships within 10 days.
#5	16-30667	STUD, (.250-20/.250-28 x 3.125) (2 required per assembly)
		16-30667 - Stud [ More info ] $7.99 3 In Stock.
		16306671 - Stud [ More info ] $9.80 Available to Order: Usually ships within 10 days.
#6	26-45577	SEAL (1 required per assembly)
		26-45577 - Seal - Priced Individually [ More info ] $2.77 4 In Stock.
		26-45577 1 - Seal - Priced Individually [ More info ] $4.10 10+ In Stock.
		26-8M0204680 - QUAD RING SEAL, ORANGE, Priced Individually [ More info ] $4.10 Available to Order: Usually ships within 10 days.
		18-2944-9 - Gasket 26-45577 2-Pack [ More info ] $5.99 $5.50 Available to Order: Usually ships within 10 days.
#7	17-20033	PIN, Dowel (2 required per assembly)
		17-20033 - Pin -Dowel - Priced Individually [ More info ] $1.27 10+ In Stock.
		17-43044 - Pin -Dowel-solid [ More info ] $2.40 Available to Order: Usually ships within 10 days.
#8	31-42647A 1	BEARING ASSEMBLY, Roller (1 required per assembly)
		31-42647A 1 - Roller Bearing - Drive Shaft [ More info ] $65.03 2 In Stock.
		18-1117 - Bearing, 387817, 31-42647A1 [ More info ] $53.99 $48.91 2 In Stock.
#9	45-12618	DRIVESHAFT (1 required per assembly)
		45-12618 - Drive Shaft, NLA [ More info ] Unavailable
#10	15-42637A 1	SHIM SET (AR required per assembly)
		15-42637A 1 - Shim Set [ More info ] $17.77 10+ In Stock.
#11	31-36387A 1	BEARING, Roller (1 required per assembly)
		31-36387A 1 - Tapered Roller Bearing [ More info ] $44.99 1 In Stock.
		18-1143 - Bearing 31-36387A1 [ More info ] $49.99 $45.72 1 In Stock.
#12	11-42633	NUT (1 required per assembly)
		11-42633 - Nut, Drive Shaft Bearing [ More info ] $22.61 9 In Stock.
		824519 - Retainer [ More info ] Unavailable
		824519 1 - Retainer [ More info ] $6.70 Available to Order: Usually ships within 10 days.
		18-2346 - Retainer, 824519 1 [ More info ] $4.99 $4.22 Available to Order: Usually ships within 10 days.
#13	28-56654	KEY (1 required per assembly)
		28-56654 - Drive Key - Priced Individually [ More info ] $1.99 4 In Stock.
		28-8M0032834 - Key - Priced Individually [ More info ] $4.40 10+ In Stock.
		28-8M0214992 - KEY @5 [ More info ] Unavailable
#14	12-29395	WASHER, (.390 x 1.00 x .06) (1 required per assembly)
		12-29395 - Washer, (.390 X 1.00 X .06) [ More info ] $0.98 6 In Stock.
		12-8M0042641 - Washer [ More info ] $1.60 Available to Order: Usually ships within 10 days.
		18-4267-9 - Washer, 12-29395, 2PK [ More info ] $2.99 2 In Stock.
#15	12-31266	WASHER (Rubber) (1 required per assembly)
		12-31266 - Washer (rubber) [ More info ] $1.10 10+ In Stock.
#16	23-30617A 2	BUSHING ASSEMBLY (1 required per assembly)
		23-30617A 2 - Bushing Assembly [ More info ] Unavailable
		23-8M0112749 - Shift Shaft Bushing ZZ [ More info ] $28.17 In Stock
		18-2154 - Bushing, 23-30617A2 [ More info ] $23.99 $21.73 6 In Stock.
#17	26-89236	SEAL, Oil (1 required per assembly)
		26-89236 - Seal [ More info ] $12.21 10+ In Stock.
		26-89236 1 - Seal [ More info ] $17.00 10+ In Stock.
		18-2009 - Seal, 26-89236 [ More info ] $11.99 $11.31 10+ In Stock.
#18	25-25439	O-RING, (.862 x .103) (1 required per assembly)
		25-25439 - O-Ring, Shaft Shaft Bushing [ More info ] $1.90 10+ In Stock.
		18-7420-9 - O-Ring (PK5) 25-21836 [ More info ] $9.99 $9.50 4 In Stock.
#19	12-27880	WASHER (1 required per assembly)
		12-27880 - Washer, Lower Shift Shaft And Crank [ More info ] $1.60 10+ In Stock.
#20	18-20233	CLIP, Cotter (1 required per assembly)
		18-20233 - Pin, Hair-Ext, Priced Individually [ More info ] $2.21 10+ In Stock.
		53-29641 - E Ring - Priced Individually [ More info ] $1.70 4 In Stock.
		18-4295-9 - Clip, 53-29461, 2PK [ More info ] $2.59 $2.17 Available to Order: Usually ships within 10 days.
#21	15099	SHAFT, Shift (1 required per assembly)
		15099 - SHAFT-SHIFT,NLA [ More info ] Unavailable
#22	10-14834	SCREW, (.735-16), Fill/Drain (Magnetic) (1 required per assembly)
		10-14834 - Screw [ More info ] $1.78 10+ In Stock.
		10-14834A 1 - Screw [ More info ] Unavailable
		22-67892 - Plug - Priced Individually [ More info ] Unavailable
		22-67892A 1 - Drain Plug [ More info ] Unavailable
		22-67892A05 - Drain Plug Kit [ More info ] Unavailable
		22-67892A06 - Drain Plug Kit [ More info ] Unavailable
		22-8M0058389 - Screw Kit - Priced Individually [ More info ] $10.30 9 In Stock.
		18-23751-9 - Drain Screw , Package of 50 [ More info ] $338.69 $294.70 In Stock
		18-2375 - Plug, 22-67892A1 [ More info ] $6.99 $6.04 10+ In Stock.
#23	12-19183	WASHER, Fiber (1 required per assembly)
		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 Available to Order: Usually ships within 10 days.
		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.
#24	43-17064A 3	GEAR SET (1 required per assembly) (INCLUDES PINION & FORWARD GEARS)
		43-17064A 3 - Gear Set [ More info ] $75.00 4 In Stock.
		43-828072A 2 - Forward Gear Assembly [ More info ] Unavailable
		43-878087A 4 - Gear Set [ More info ] $879.86 Available to Order: Usually ships within 10 days.
		18-2206-1 - Gear Set [ More info ] $300.00 $231.00 5 In Stock.
#25	12-92721	WASHER (1 required per assembly)
		12-92721 - Washer, Pinion Gear [ More info ] $1.40 $0.78 10+ In Stock.
		18-2359 - Nut Kit [ More info ] $5.19 $2.97 Available to Order: Usually ships within 10 days.
		18-2343-9 - Washer, 12-92721, 2PK [ More info ] $2.79 Available to Order: Usually ships within 10 days.
#26	11-35921	NUT, (.625-18) (1 required per assembly)
		11-35921 - Nut, (.625-18) [ More info ] $7.70 10+ In Stock.
		18-3719 - Nut, 11-35921, 314730 [ More info ] $4.99 $4.51 4 In Stock.
#27	46-44292A 3	BASE ASSEMBLY, Water Pump (1 required per assembly)
		46-44292A 3 - Water Pump Base [ More info ] $45.14 1 In Stock.
		18-3420 - Water Pump Base 46-44292A3 [ More info ] $35.99 $32.60 9 In Stock.
#28	27-42631 1	GASKET (1 required per assembly)
		27-42631 1 - Gasket [ More info ] $3.90 10+ In Stock.
		18-2919-9 - Gasket 27-42631 2-Pack [ More info ] $5.19 2 In Stock.
#29	25-90011	O-RING, (2.175 x .175) (AR required per assembly)
		25-90011 - Drive Shaft Cover O-Ring [ More info ] $1.39 10+ In Stock.
		25-896523 - O-ring, (2.175 X .103) [ More info ] Unavailable
		25-8M0142854 - O-Ring [ More info ] $1.10 Available to Order: Usually ships within 10 days.
#29	25-38099	O-RING (.139 x 2.109 ID) (AR required per assembly)
		25-38099 - O-ring (.139 X 2.109 Id) [ More info ] $3.20 10+ In Stock.
#30	26-89238	SEAL, Oil (1 required per assembly)
		26-89238 - Seal [ More info ] $20.33 1 In Stock.
		18-2014 - Seal 26-89238, 26F69430 [ More info ] $17.99 $16.59 9 In Stock.
#31	26-16977	SEAL, Oil (1 required per assembly)
		26-16977 - Seal [ More info ] $21.01 In Stock
		18-2026 - Seal, 321453 [ More info ] $15.99 $15.95 10+ In Stock.
		18-2013 - Seal, 26-16977 [ More info ] $15.99 $14.42 8 In Stock.
#32	27-18051	GASKET (Lower) (1 required per assembly)
		27-18051 - Lower Water Pump Gasket [ More info ] $7.54 $6.41 6 In Stock.
#33	27-85609 1	GASKET (Upper) (1 required per assembly)
		27-85609 1 - Gasket , Priced Individually [ More info ] Unavailable
		27-858524 - Water Pump Base Gasket [ More info ] $3.90 10+ In Stock.
		18-2915-9 - Gasket 27-858524 2-Pack [ More info ] $5.19 10+ In Stock.
#34	32435	FACE PLATE (1 required per assembly)
		32435 - Face Plate - Priced Individually [ More info ] Unavailable
		32435 1 - Face Plate [ More info ] Unavailable
		8M0204677 - Wear Plate [ More info ] $8.90 10 In Stock.
#35	46-96148A 1	BODY ASSEMBLY, Water Pump (1 required per assembly)
		46-96148A 1 - Water Pump Body Assembly [ More info ] Unavailable
		46-96148T 1 - Water Pump Body [ More info ] $49.92 In Stock
		18-3116 - Housing 46-96148A1 [ More info ] $48.99 $44.58 3 In Stock.
#36	48752	INSERT (1 required per assembly)
		48752 - Water Pump Insert, Priced Individually [ More info ] $7.77 10+ In Stock.
		48752T - Water Pump Insert - Priced Individually [ More info ] $11.90 Available to Order: Usually ships within 10 days.
		18-3114 - SS Cup, 48752 [ More info ] $3.19 $2.63 Available to Order: Usually ships within 10 days.
#37	26-38970	SEAL (Rubber) (1 required per assembly)
		26-38970 - Seal - Priced Individually [ More info ] $4.90 10+ In Stock.
		18-3110 - Seal, 26-38970 [ More info ] $3.49 $2.77 Available to Order: Usually ships within 10 days.
#38	47-89984	IMPELLER (1 required per assembly)
		47-89984 - Impeller [ More info ] Unavailable
		47-89984 2 - Impeller [ More info ] Unavailable
		47-89984 4 - Impeller [ More info ] Unavailable
		47-89984T 4 - Impeller [ More info ] $47.58 10+ In Stock.
		18-3017 - Impeller 47-89984 [ More info ] $39.99 $36.49 10+ In Stock.
#39	10-96411	SCREW, (#14-8 x 2.25) (1 required per assembly)
		10-96411 - Screw [ More info ] $1.70 10+ In Stock.
		10-8M0215009 - SCREW [ More info ] Unavailable
#40	11-13438	NUT, (.250-28) (2 required per assembly)
		11-13438 - Nut (1/4-28) [ More info ] Unavailable
		11-826711 9 - Nut [ More info ] $2.50 10+ In Stock.
#41	12-29245	WASHER, (.281 x .500 x .060) Stainless Steel (2 required per assembly)
		12-29245 - Washer [ More info ] $0.89 10+ In Stock.
		12-8M0204649 - WASHER Note: Priced Individually [ More info ] $1.20 Available to Order: Usually ships within 10 days.
#42	11-13436	NUT (.324-24) (1 required per assembly)
		11-13436 - Nut (5/16-24) [ More info ] $3.20 4 In Stock.
#43	12-36001	WASHER (1 required per assembly)
		12-36001 - Washer - Priced Individually [ More info ] $1.40 10+ In Stock.
		18-4270 - Washer 12-36001 [ More info ] $1.25 $0.92 10+ In Stock.
#44	25-30271	RING, Rubber (Rubber) (1 required per assembly)
		25-30271 - Ring - Priced Individually [ More info ] Unavailable
		25-8M0214918 - WATER PUMP HSG RUBBER RING O/B [ More info ] $1.90 5 In Stock.
		18-7426-9 - O-Ring (PK2) 25-30271 [ More info ] $3.99 $3.22 2 In Stock.
#45	25-30613	O-RING (1 required per assembly)
		25-30613 - O-ring, Upper Drive Shaft [ More info ] $1.70 10+ In Stock.
		25-8M0214919 - O RING @5 [ More info ] Unavailable
		18-7158-9 - (PK5) O-Ring 25-30613 [ More info ] $8.99 5 In Stock.
#46	23-13235	SLEEVE (1 required per assembly)
		23-13235 - Sleeve [ More info ] $8.00 2 In Stock.