Key Features:

• Package of 5

Additional Details:

• I.D.: 1.046" or 26.6mm
• Width: 0.135" or 3.4mm

Interchanges/Replaces

GLM

• 82150

Johnson/Evinrude Outboard

• 303360

Mallory

• 9-76507

Mercruiser Stern Drive

• 25-35027

Mercury Marine

• 25-35027

Additional Details:

• Fits: R, MR, Alpha One & Gen II drives (s/n 6225577 & Up) (1983 & Up)

Interchanges/Replaces

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

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-2840	GLM 31160 Mercruiser Stern Drive 27-35982	1	Bell Housing Gasket		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
18-7153	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
18-7170	Chrysler/Force/US Marine 25-33504 GLM 82200 Johnson/Evinrude Outboard 307239 Mallory 9-76502 Mercruiser Stern Drive 25-33504 Mercury Marine 25-33504 OMC Stern Drive 307239 3852071 Volvo Penta 3852071	1	O-Ring		N/A

Additional Details:

• Fits: Bravo drives

Interchanges/Replaces

GLM

• 39640

Mallory

• 9-62604

Mercruiser Stern Drive

• 16755
• 16755A1
• 16755Q1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2516	GLM 86310 Mallory 9-76503 Mercruiser Stern Drive 16755 16755A1 16755Q1	1	Outdrive Seal		N/A
18-7105	GLM 80180 Johnson/Evinrude Outboard 311338 Mallory 9-76506 Mercruiser Stern Drive 25-62705 25-F748342 Mercury Marine 25-62705	1	O-Ring		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
18-7153	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
18-7168	GLM 80120 Johnson/Evinrude Outboard 202893 Mallory 9-76550 Mercruiser Stern Drive 25-21720 25-26834 25-48171 25-801334436 Mercury Marine 25-20587 25-21720 25-26834 25-48171 25-801334436 OMC Stern Drive 202893 3852033 Volvo Penta 3852033	2	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	1	O-Ring		N/A

Additional Details:

• Fits: All #1, R, MR, Alpha I, Alpha I Gen II, Bravo & Blackhawk
• Fits: Cobra 1986-Up

Interchanges/Replaces

GLM

• 28315

Mallory

• 9-72401

Mercruiser Stern Drive

• 59830A1
• 59830A7

OMC Stern Drive

• 3850815
• 912212

Volvo Penta

• 3850815

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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
18-7153	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

Additional Details:

• For: All #1, R/MR/Alpha Gen II 0K999999 & Below (1971-1997)

Interchanges/Replaces

GLM

• 28050

Mallory

• 9-72409

Mercruiser Stern Drive

• 59829A1
• 59830A5
• 814819A2

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2128	GLM 28100 Mallory 9-72403 Mercruiser Stern Drive 39383 393831 39383T OMC Stern Drive 3850813 912213 Volvo Penta 3850813	1	Center Socket		N/A
18-2174	GLM 28030 Mallory 9-72405 Mercruiser Stern Drive 36312 41431 58749 75832 758321 75832A1 75832A2 75832A3 75832B 75832B1 75832B2 75832B3 75832T 75832T1 OMC Stern Drive 3850812 915717 Volvo Penta 3850812	2	U-Joint (Heavy Duty)
18-2146	GLM 28315 Mallory 9-72401 Mercruiser Stern Drive 59830A1 59830A7 OMC Stern Drive 3850815 912212 Volvo Penta 3850815	1	Yoke		N/A
18-2125	GLM 28310 Mallory 9-72400 Mercruiser Stern Drive 39384 46020 46020002 460201 46020T 46020T02	1	Yoke		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
18-7153	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

Additional Details:

• For: 225Hp EFI/250Hp EFI (G129222 & Up), 200Hp (T801000 & Up), 200Hp Optimax DFI (G386496 & Up)
• For: 225Hp Optimax DFI (G590000-G960499), 225Hp (D280813-G437999), Models w/ "C-3 Casting"

Interchanges/Replaces

Mallory

• 9-74208

Mercury Marine

• 26-816575A4

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-8347	Chrysler/Force/US Marine 26-816464-1 Mercruiser Stern Drive 26-8164641 Mercury Marine 76384 816464 8164641	1	Shift Shaft 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
18-2564	Chrysler/Force/US Marine 27-430331 GLM 30090 Honda Outboard 19234-ZW1-003 Mallory 9-60020 Mercruiser Stern Drive 27-430331 Mercury Marine 27-43033 27-430331	1	Impeller Gasket		N/A
18-2566	Chrysler/Force/US Marine 27-817277 GLM 30290 Mallory 9-60023 Mercruiser Stern Drive 27-817277 27-8172771 Mercury Marine 27-817277 27-8172771	1	Impeller Gasket		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	1	O-Ring		N/A
18-7159	GLM 83440 Mallory 9-76544 Mercruiser Stern Drive 25-31534 25-48451 Mercury Marine 25-31534	1	O-Ring		N/A
18-2077	Chrysler/Force/US Marine 26-F697555 GLM 85130 Mallory 9-76119 Mercruiser Stern Drive 26-14077 Mercury Marine 26-14077	1	Oil Seal		N/A
18-2002	Chrysler/Force/US Marine 26-76868 GLM 85130 Honda Outboard 91252-ZW1-003 Johnson/Evinrude Outboard 0320862 Mallory 9-76202 Mercruiser Stern Drive 26-30550 26-76868 Mercury Marine 26-30550 26-70019 26-73838 26-76868 OMC Stern Drive 320862	1	Oil Seal		N/A
18-0649	Mercury Marine 27-858935	1	Shift Housing Gasket		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
18-7440-1	GLM 81170 Johnson/Evinrude Outboard 301967 Mallory 9-76574 Mercruiser Stern Drive 25-36318 Mercury Marine 25-36318	2	O-Ring		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
18-7176	Chrysler/Force/US Marine 25-90011 25-F74305 F694555 F74035 F74305-1 GLM 81390 Mallory 9-76554 Mercruiser Stern Drive 25-896523 25-90011 Mercury Marine 25-896523 25-90011	1	O-Ring		N/A
18-2599	GLM 85590 Mallory 9-43628 Mercruiser Stern Drive 26-816575A2 Mercury Marine 26-816575A2	1	Face Seal and Tool		N/A

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

Key Features:

• Crossflow V-4, V-6

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2001	GLM 86030 Johnson/Evinrude Outboard 0330137 310600 313398 317761 321463 321668 Mallory 9-76212 OMC Stern Drive 310600 313398 321463 330137	1	Oil 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
18-7133	GLM 82400 Johnson/Evinrude Outboard 305123 321119 Mallory 9-76529 OMC Stern Drive 305123	4	O-Ring		N/A
18-2074	GLM 86440 Johnson/Evinrude Outboard 318451 322575 339620	1	Oil Seal		N/A
18-0543	GLM 86770 Johnson/Evinrude Outboard 0321895 313507	1	Oil Seal		N/A

Additional Details:

• For: Bravo I, II, III (0B664190 & Up) (1998-2005)

Interchanges/Replaces

GLM

• 28060

Mercruiser Stern Drive

• 12784A10
• 12784A4
• 864244A2

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2146	GLM 28315 Mallory 9-72401 Mercruiser Stern Drive 59830A1 59830A7 OMC Stern Drive 3850815 912212 Volvo Penta 3850815	1	Yoke		N/A
18-2174	GLM 28030 Mallory 9-72405 Mercruiser Stern Drive 36312 41431 58749 75832 758321 75832A1 75832A2 75832A3 75832B 75832B1 75832B2 75832B3 75832T 75832T1 OMC Stern Drive 3850812 915717 Volvo Penta 3850812	2	U-Joint (Heavy Duty)
18-2128	GLM 28100 Mallory 9-72403 Mercruiser Stern Drive 39383 393831 39383T OMC Stern Drive 3850813 912213 Volvo Penta 3850813	1	Center Socket		N/A
18-6400	GLM 28340 Mallory 9-72402 Mercruiser Stern Drive 12784 12784T	1	Yoke		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
18-7153	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

Additional Details:

• Ratios: 1.50:1 (1.47:1)
• Teeth: 20-22
• For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

• 11216

Mercruiser Stern Drive

• 43-803102T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1165	GLM 21510 Mallory 9-75117 Mercruiser Stern Drive 31-61100A1	1	Tapered Roller Bearing		N/A
18-2201	GLM 11210 Mercruiser Stern Drive 43-18410A2 43-18411A2 43-59832A2 43-59832A4	1	Upper Unit Gear Set		N/A
18-2820	Mercruiser Stern Drive 27-45821 27-64818 27-64818A1 27-64818A20 27-64818A4 27-64818Q4	1	Outdrive Gasket		N/A
18-2840	GLM 31160 Mercruiser Stern Drive 27-35982	1	Bell Housing Gasket		N/A
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-7170	Chrysler/Force/US Marine 25-33504 GLM 82200 Johnson/Evinrude Outboard 307239 Mallory 9-76502 Mercruiser Stern Drive 25-33504 Mercury Marine 25-33504 OMC Stern Drive 307239 3852071 Volvo Penta 3852071	1	O-Ring		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
18-7153	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
18-2644	GLM 87501 Mallory 9-74302 Mercruiser Stern Drive 26-88397A1	1	Upper Unit Seal Kit		N/A
18-1160	GLM 21520 Mallory 9-75123 Mercruiser Stern Drive 31-35988A12 31-35988A2	1	Drive Bearing Kit		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
18-2283	GLM 23260 Mercruiser Stern Drive 15-45691A1	1	Shim Set		N/A

Additional Details:

• Ratio: 1.84:1 & 1.81:1
• Teeth: 17-19
• For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

• 11236

Mercruiser Stern Drive

• 43-803120T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2283	GLM 23260 Mercruiser Stern Drive 15-45691A1	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
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
18-2644	GLM 87501 Mallory 9-74302 Mercruiser Stern Drive 26-88397A1	1	Upper Unit Seal Kit		N/A
18-1160	GLM 21520 Mallory 9-75123 Mercruiser Stern Drive 31-35988A12 31-35988A2	1	Drive Bearing Kit		N/A
18-2204	GLM 11230 Mercruiser Stern Drive 43-75324A2 43-75325A3	1	Upper Unit Gear Set		N/A
18-2820	Mercruiser Stern Drive 27-45821 27-64818 27-64818A1 27-64818A20 27-64818A4 27-64818Q4	1	Outdrive Gasket		N/A
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-7170	Chrysler/Force/US Marine 25-33504 GLM 82200 Johnson/Evinrude Outboard 307239 Mallory 9-76502 Mercruiser Stern Drive 25-33504 Mercury Marine 25-33504 OMC Stern Drive 307239 3852071 Volvo Penta 3852071	1	O-Ring		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
18-7153	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