Additional Details:

• For: Alpha I Gen II

Interchanges/Replaces

GLM

• 87501

Mallory

• 9-74302

Mercruiser Stern Drive

• 26-88397A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2003	GLM 85030 Mallory 9-76102 Mercruiser Stern Drive 26-32080 26-36054 26-68493 26-823894 26-823894B	1	Oil Seal		N/A
18-2056	Chrysler/Force/US Marine 26-66302 GLM 85060 Mallory 9-76130 Mercruiser Stern Drive 26-37259 26-89237 26-96503 26-965031 Mercury Marine 26-56394 26-66302	2	Oil Seal		N/A
18-2715	GLM 12930 Mallory 9-78005 Mercruiser Stern Drive 24-17997A1	1	Check Valve Kit		N/A
18-2944	GLM 85140 Mallory 9-76512 Mercruiser Stern Drive 26-45577 26-455771 26-45577B 26-45577B1	1	Seal Ring Gasket		N/A
18-2945	Chrysler/Force/US Marine 12-19183 F50556 F8077 F8186 Johnson/Evinrude Outboard 307552 Mallory 9-60101 9-60102 Mercruiser Stern Drive 12-19183 12-191832 12-191833 12-19183B 12-20260 12-20260B Mercury Marine 12-19183 12-191832 12-191833 12-20260	1	Drain Screw Gasket		N/A
18-3289	Mercruiser Stern Drive 26-864319	1	Double Lip Seal		N/A
18-7117	GLM 82150 Johnson/Evinrude Outboard 303360 Mallory 9-76507 Mercruiser Stern Drive 25-35027 Mercury Marine 25-35027	1	O-Ring		N/A
18-7161	GLM 80420 Mallory 9-76546 Mercruiser Stern Drive 25-32546 Mercury Marine 25-32546	1	O-Ring		N/A
18-7169	Chrysler/Force/US Marine 25-F24278 GLM 82380 Mallory 9-76551 Mercruiser Stern Drive 25-35984 25-70937 OMC Stern Drive 911686	1	O-Ring		N/A
18-7420	GLM 82110 Mallory 9-76565 Mercruiser Stern Drive 25-21836 Mercury Marine 25-21836 Mercury Race Outboard 25-21836 Mercury Race Sterndrive 25-21836 Mercury Sport Jet 25-21836	2	O-Ring		N/A
18-7153	GLM 81180 Mallory 9-76505 Mercruiser Stern Drive 25-25439 Mercury Marine 25-25439 Mercury Race Outboard 25-25439 Mercury Race Sterndrive 25-25439 OMC Stern Drive 3852565 911851 Volvo Penta 3852565 997368	2	O-Ring
18-2430	Mallory 9-60105 Mercruiser Stern Drive 26-830749 Mercury Marine 26-830749	1	Drain Screw Gasket		N/A
NSS	Mercruiser Stern Drive 26-88397	1	Seal	No Image	N/A

Additional Details:

• For: #1 Units (including Alpha)(Also fits 888 stern drive)

Interchanges/Replaces

GLM

• 87500

Mallory

• 9-74303

Mercruiser Stern Drive

• 26-32511A1
• 26-32511B1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0894	GLM 31150 Mallory 9-60037 Mercruiser Stern Drive 27-55810 27-558101	1	Water Pocket Cover Gasket		N/A
18-2003	GLM 85030 Mallory 9-76102 Mercruiser Stern Drive 26-32080 26-36054 26-68493 26-823894 26-823894B	1	Oil Seal		N/A
18-2049	GLM 85020 Mallory 9-76111 Mercruiser Stern Drive 26-32511	1	Oil Seal		N/A
18-2056	Chrysler/Force/US Marine 26-66302 GLM 85060 Mallory 9-76130 Mercruiser Stern Drive 26-37259 26-89237 26-96503 26-965031 Mercury Marine 26-56394 26-66302	1	Oil Seal		N/A
18-2944	GLM 85140 Mallory 9-76512 Mercruiser Stern Drive 26-45577 26-455771 26-45577B 26-45577B1	1	Seal Ring Gasket		N/A
18-2945	Chrysler/Force/US Marine 12-19183 F50556 F8077 F8186 Johnson/Evinrude Outboard 307552 Mallory 9-60101 9-60102 Mercruiser Stern Drive 12-19183 12-191832 12-191833 12-19183B 12-20260 12-20260B Mercury Marine 12-19183 12-191832 12-191833 12-20260	2	Drain Screw Gasket		N/A
18-3110	GLM 12830 Mallory 9-43604 Mercruiser Stern Drive 26-38970 Mercury Marine 26-29677 26-36557A1 26-38970	1	Water Pump Housing Bushing		N/A
18-7153	GLM 81180 Mallory 9-76505 Mercruiser Stern Drive 25-25439 Mercury Marine 25-25439 Mercury Race Outboard 25-25439 Mercury Race Sterndrive 25-25439 OMC Stern Drive 3852565 911851 Volvo Penta 3852565 997368	2	O-Ring		N/A
18-7161	GLM 80420 Mallory 9-76546 Mercruiser Stern Drive 25-32546 Mercury Marine 25-32546	1	O-Ring		N/A
18-7169	Chrysler/Force/US Marine 25-F24278 GLM 82380 Mallory 9-76551 Mercruiser Stern Drive 25-35984 25-70937 OMC Stern Drive 911686	1	O-Ring		N/A
18-7445	GLM 80190 Mallory 9-76568 Mercruiser Stern Drive 25-55801	1	O-Ring		N/A
18-0521	GLM 85150 Mercruiser Stern Drive 26-36557 Mercury Marine 26-36557	1	Water Tube Rubber Seal		N/A

Additional Details:

• Fits: Volvo SX Thru 2006

Interchanges/Replaces

OMC Stern Drive

• 3850594

Volvo Penta

• 3850594

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
NSS	Volvo Penta 3852052	1	Split Pin	No Image	N/A
NSS	Volvo Penta 3852317	1	Gasket	No Image	N/A
NSS	Volvo Penta 967344	1	O-Ring	No Image	N/A
NSS	Volvo Penta 3852279	1	Gasket	No Image	N/A
NSS	Volvo Penta 3852272	1	Seal	No Image	N/A
18-0175	GLM 81080 Mercruiser Stern Drive 25-26543 Mercury Marine 25-26543	1	O-Ring		N/A
18-7116	Chrysler/Force/US Marine 25-62704 25-F24342 GLM 81100 Johnson/Evinrude Outboard 303067 Mallory 9-43631 Mercruiser Stern Drive 25-62704 802206 Mercury Marine 25-20633 25-22174 25-62704 25-85148 802206 OMC Stern Drive 303067 3852045 Volvo Penta 3852045	1	O-Ring		N/A
18-7183	GLM 45080 Mallory 9-76557 OMC Stern Drive 3852320 925093 Volvo Penta 3852320 925093 975676	1	O-Ring		N/A
18-7153	GLM 81180 Mallory 9-76505 Mercruiser Stern Drive 25-25439 Mercury Marine 25-25439 Mercury Race Outboard 25-25439 Mercury Race Sterndrive 25-25439 OMC Stern Drive 3852565 911851 Volvo Penta 3852565 997368	1	O-Ring		N/A
18-32882	OMC Stern Drive 3852315 Volvo Penta 3852315	1	Seal		N/A
18-25251	OMC Stern Drive 3852322 853858 853868 Volvo Penta 853868	1	Sealing Ring		N/A
18-2996	GLM 86300 Mallory 9-76508 OMC Stern Drive 3852560 911823 Volvo Penta 3852560	1	Outdrive Seal		N/A
18-4248	Johnson/Evinrude Outboard 311598 Mallory 9-60408 OMC Stern Drive 311598 3852105 Volvo Penta 3852105	1	Drain/Fill Plug Washer		N/A

Additional Details:

• For: 100-245 Stringer Units (1968-1972)

Interchanges/Replaces

GLM

• 87651

OMC Stern Drive

• 981799

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0939	GLM 33050 Johnson/Evinrude Outboard 315189 OMC Stern Drive 315189	1	Upper Gearcase Dipstick Gasket		N/A
18-2073	GLM 86090 OMC Stern Drive 313191 907967 981268 981587	4	Oil Seal		N/A
18-3111	GLM 86100 OMC Stern Drive 907774	1	Water Pump Shaft Seal		N/A
18-4248	Johnson/Evinrude Outboard 311598 Mallory 9-60408 OMC Stern Drive 311598 3852105 Volvo Penta 3852105	2	Drain/Fill Plug Washer		N/A
18-7103	GLM 81190 Johnson/Evinrude Outboard 308624 Mercruiser Stern Drive 25-29845 Mercury Marine 25-29845 OMC Stern Drive 308624	4	O-Ring		N/A
18-7107	GLM 82480 Johnson/Evinrude Outboard 313175 Mercruiser Stern Drive 25-67202 Mercury Marine 25-67202 OMC Stern Drive 313175	1	O-Ring		N/A
18-7121	GLM 82350 Mallory 9-76651 Mercruiser Stern Drive 25-35029 27-882613 802231 Mercury Marine 25-35029 OMC Stern Drive 308621	1	O-Ring		N/A
18-7134	Chrysler/Force/US Marine 25-20195 25-F40342 GLM 81120 Johnson/Evinrude Outboard 303059 339543 Mallory 9-76511 Mercruiser Stern Drive 25-20195 25-201951 Mercury Marine 25-20195 OMC Stern Drive 303059	1	O-Ring		N/A
18-7146	GLM 81220 Johnson/Evinrude Outboard 554545 Mallory 9-76539 Mercruiser Stern Drive 25-47632 25-864701 OMC Stern Drive 554545	1	O-Ring		N/A
18-7158	GLM 81160 Johnson/Evinrude Outboard 309731 310585 Mallory 9-76543 Mercruiser Stern Drive 25-30613 25-846357 Mercury Marine 25-30613 25-846357 OMC Stern Drive 310585 310967	1	O-Ring		N/A
18-7172	GLM 82360 Johnson/Evinrude Outboard 553126 Mallory 9-76552 Mercruiser Stern Drive 25-31305 Mercury Marine 25-31305 OMC Stern Drive 553126	1	O-Ring		N/A
18-7173	Chrysler/Force/US Marine 25-30224 GLM 82250 Johnson/Evinrude Outboard 310327 Mallory 9-76501 Mercruiser Stern Drive 25-30224 25-30224Q Mercury Marine 25-27018 25-30224 25-30224Q OMC Stern Drive 310327	1	O-Ring		N/A
18-7198	Chrysler/Force/US Marine 25-45710 GLM 81270 Honda Outboard 91353-ZW1-003 Mallory 9-76504 Mercruiser Stern Drive 25-45710 25-457101 Mercury Marine 25-45710 25-457101 OMC Stern Drive 308626	2	O-Ring		N/A
NSS	OMC Stern Drive 308592	2	Gasket, Cover	No Image	N/A
NSS	OMC Stern Drive 308592	2	Gasket, Cover	No Image	N/A

Additional Details:

• For: All Cobra (1986-1989)

Interchanges/Replaces

GLM

• 87654

OMC Stern Drive

• 984459
• 986364
• 987603

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0166	GLM 86620 OMC Stern Drive 911705	2	Grommet		N/A
18-0884	GLM 33910 OMC Stern Drive 911733	1	Water Cover Gasket		N/A
18-0911	GLM 34771 OMC Stern Drive 911698	1	Water Pump Base Gasket		N/A
18-2067	GLM 86530 OMC Stern Drive 911685	1	Oil Seal		N/A
18-2068	GLM 86610 OMC Stern Drive 3853655 911701 915702 916058	1	Oil Seal		N/A
18-2541	GLM 86630 OMC Stern Drive 911704	1	Rubber Seal		N/A
18-2916	GLM 34770 OMC Stern Drive 911702	1	Water Pump Housing Gasket		N/A
18-2918	GLM 34730 Mallory 9-62650 OMC Stern Drive 911836 915840	1	Outdrive Gasket		N/A
18-2996	GLM 86300 Mallory 9-76508 OMC Stern Drive 3852560 911823 Volvo Penta 3852560	1	Outdrive Seal		N/A
18-7107	GLM 82480 Johnson/Evinrude Outboard 313175 Mercruiser Stern Drive 25-67202 Mercury Marine 25-67202 OMC Stern Drive 313175	1	O-Ring		N/A
18-7116	Chrysler/Force/US Marine 25-62704 25-F24342 GLM 81100 Johnson/Evinrude Outboard 303067 Mallory 9-43631 Mercruiser Stern Drive 25-62704 802206 Mercury Marine 25-20633 25-22174 25-62704 25-85148 802206 OMC Stern Drive 303067 3852045 Volvo Penta 3852045	1	O-Ring		N/A
18-7138	GLM 83250 Mallory 9-76533 OMC Stern Drive 318717	2	O-Ring		N/A
18-7153	GLM 81180 Mallory 9-76505 Mercruiser Stern Drive 25-25439 Mercury Marine 25-25439 Mercury Race Outboard 25-25439 Mercury Race Sterndrive 25-25439 OMC Stern Drive 3852565 911851 Volvo Penta 3852565 997368	2	O-Ring		N/A
18-7169	Chrysler/Force/US Marine 25-F24278 GLM 82380 Mallory 9-76551 Mercruiser Stern Drive 25-35984 25-70937 OMC Stern Drive 911686	1	O-Ring		N/A
18-7403	GLM 81280 Mallory 9-76567 OMC Stern Drive 909316	1	O-Ring		N/A
18-7407	GLM 82430 Johnson/Evinrude Outboard 911700 OMC Stern Drive 3852531 911700 Volvo Penta 3852531	1	O-Ring		N/A

Additional Details:

• For: Rochester 4BBL Quadra Jet
• Fits: 1969-1995 MCM 4 & 6 Cyl In-Line, V-6 & V-8 (305, 350, 427, 454 & 502 CID) Engines

Use With:

• 18-7619-1: Carburetor (Remanufactured)

Interchanges/Replaces

GLM

• 76123

Mallory

• 9-37617

Mercruiser Stern Drive

• 1397-8952
• 823426A1

Rochester

• 17081299

Additional Details:

• Ratio: 1.47:1
• For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

• 43-803103T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-6351	Mercruiser Stern Drive 43-853641A2	1	Upper Unit Gear Set		N/A
18-1179	GLM 21511 Mallory 9-75106 Mercruiser Stern Drive 31-32575A1 31-32575T1 Mercury Marine 31-32575A1 31-32575T1	1	Tapered Roller Bearing		N/A
18-1156	Chrysler/Force/US Marine 31-30894A1 GLM 21820 Honda Outboard 91051-ZW1-003 Mallory 9-75118 Mercruiser Stern Drive 31-30894A1 Mercury Marine 31-30894A1	1	Foward Gear Bearing		N/A
18-3712	GLM 28330 Mallory 9-78107 Mercruiser Stern Drive 12-45810	1	Carrier Nut Washer		N/A
18-3713	Chrysler/Force/US Marine 11-F1920 F1348 F1881 GLM 28360 Mallory 9-78117 Mercruiser Stern Drive 11-22339 11-36084 11-97522 Mercury Marine 11-22339	1	Lock Nut		N/A
18-2644	GLM 87501 Mallory 9-74302 Mercruiser Stern Drive 26-88397A1	1	Upper Unit Seal Kit		N/A
18-2619-1	GLM 39620 Mallory 9-62601 9-62601-25 Mercruiser Stern Drive 27-64818A2 27-64818A3 27-94996 27-949962 27-94996A1 27-94996A2 27-94996Q2	1	Outdrive Gasket Set		N/A
18-2282	GLM 23261 Mercruiser Stern Drive 15-32563A1 Mercury Marine 15-32563A1	1	Shim Set		N/A
18-2292	GLM 23280 Mercruiser Stern Drive 15-35980A1	1	Shim Kit		N/A
18-2293	GLM 23270 Mercruiser Stern Drive 15-23097A1 15-36178A02 15-36178A1 15-39899A1	1	Shim Kit		N/A
NSS	Mercruiser Stern Drive 25-853649	1	Spacer, Bearing Cup	No Image	N/A

Additional Details:

• Ratios: 1.94:1 & 2.40:1
• For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

• 43-803106T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-6352	Mercruiser Stern Drive 43-853642A2	1	Upper Unit Gear Set		N/A
18-1179	GLM 21511 Mallory 9-75106 Mercruiser Stern Drive 31-32575A1 31-32575T1 Mercury Marine 31-32575A1 31-32575T1	1	Tapered Roller Bearing		N/A
18-1156	Chrysler/Force/US Marine 31-30894A1 GLM 21820 Honda Outboard 91051-ZW1-003 Mallory 9-75118 Mercruiser Stern Drive 31-30894A1 Mercury Marine 31-30894A1	1	Foward Gear Bearing		N/A
18-1161	GLM 21540 Johnson/Evinrude Outboard 983891 Mallory 9-75122 Mercruiser Stern Drive 31-35990A1 OMC Stern Drive 983891	1	Tapered Roller Bearing		N/A
18-3712	GLM 28330 Mallory 9-78107 Mercruiser Stern Drive 12-45810	1	Carrier Nut Washer		N/A
18-3713	Chrysler/Force/US Marine 11-F1920 F1348 F1881 GLM 28360 Mallory 9-78117 Mercruiser Stern Drive 11-22339 11-36084 11-97522 Mercury Marine 11-22339	1	Lock Nut		N/A
18-2644	GLM 87501 Mallory 9-74302 Mercruiser Stern Drive 26-88397A1	1	Upper Unit Seal Kit		N/A
18-2619-1	GLM 39620 Mallory 9-62601 9-62601-25 Mercruiser Stern Drive 27-64818A2 27-64818A3 27-94996 27-949962 27-94996A1 27-94996A2 27-94996Q2	1	Outdrive Gasket Set		N/A
18-2282	GLM 23261 Mercruiser Stern Drive 15-32563A1 Mercury Marine 15-32563A1	1	Shim Set		N/A
18-2292	GLM 23280 Mercruiser Stern Drive 15-35980A1	1	Shim Kit		N/A
18-2293	GLM 23270 Mercruiser Stern Drive 15-23097A1 15-36178A02 15-36178A1 15-39899A1	1	Shim Kit		N/A
NSS	Mercruiser Stern Drive 25-853649	1	Spacer, Bearing Cup	No Image	N/A

Additional Details:

• Ratio: 1.65:1
• Drive Gear: 24 teeth
• Driven Gear: 24 teeth
• For: 6 cyl Inline

Interchanges/Replaces

GLM

• 11225

Mercruiser Stern Drive

• 43-803112T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1160	GLM 21520 Mallory 9-75123 Mercruiser Stern Drive 31-35988A12 31-35988A2	1	Drive Bearing Kit		N/A
18-1161	GLM 21540 Johnson/Evinrude Outboard 983891 Mallory 9-75122 Mercruiser Stern Drive 31-35990A1 OMC Stern Drive 983891	1	Tapered Roller Bearing		N/A
18-1165	GLM 21510 Mallory 9-75117 Mercruiser Stern Drive 31-61100A1	1	Tapered Roller Bearing		N/A
18-2203	GLM 11220 Mercruiser Stern Drive 43-45814A5 43-55765A2 43-55765A3	1	Upper Unit Gear Set		N/A
18-2619-1	GLM 39620 Mallory 9-62601 9-62601-25 Mercruiser Stern Drive 27-64818A2 27-64818A3 27-94996 27-949962 27-94996A1 27-94996A2 27-94996Q2	1	Outdrive Gasket Set		N/A
18-2648	GLM 87500 Mallory 9-74303 Mercruiser Stern Drive 26-32511A1 26-32511B1	1	Upper Unit Seal Kit		N/A
18-2820	Mercruiser Stern Drive 27-45821 27-64818 27-64818A1 27-64818A20 27-64818A4 27-64818Q4	1	Outdrive Gasket		N/A