Sierra / Mallory

Interchanges/Replaces

Johnson/Evinrude Outboard

• 335900
• 435760
• 5000618

Interchanges/Replaces

Johnson/Evinrude Outboard

• 335678
• 435761
• 5000626

Additional Details:

• For: s/n 6225577 & Later Alpha I, except Gen II

Interchanges/Replaces

GLM

• 28400

Mallory

• 9-78121

Mercruiser Stern Drive

• 94998A1
• 94998A2
• 94998A3
• 94998A4

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
18-1165	GLM 21510 Mallory 9-75117 Mercruiser Stern Drive 31-61100A1	1	Tapered Roller Bearing		N/A

Additional Details:

• For: Mercury 20 Hp

Interchanges/Replaces

GLM

• 31090

Mercury Marine

• 27-39623
• 27-396231

Additional Details:

• For: Mercury 20 Hp

Interchanges/Replaces

GLM

• 31090

Mercury Marine

• 27-39623
• 27-396231

Additional Details:

• Upper Gear Housing Ratio: 21:16

Interchanges/Replaces

Johnson/Evinrude Outboard

• 984770
• 986381

OMC Stern Drive

• 984770
• 986381

Additional Details:

• Upper Gear Housing Ratio: 21:19

Interchanges/Replaces

OMC Stern Drive

• 984765
• 986380

Interchanges/Replaces

GLM

• 87010

Volvo Penta

• 832669

Additional Details:

• Ratio: 1.50:1
• Fits: R, MR, Alpha One & SS (1983-1990)
• Drive Gear: 22 teeth
• Driven Gear: 20 teeth

Interchanges/Replaces

GLM

• 11215

Mallory

• 9-79202

Mercruiser Stern Drive

• 43-803116T1
• 43-803117T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1142	GLM 21560 Mercruiser Stern Drive 31-32573A1	1	Upper Pinion Bearing		N/A
18-1160	GLM 21520 Mallory 9-75123 Mercruiser Stern Drive 31-35988A12 31-35988A2	1	Drive Bearing Kit		N/A
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
18-2619-1	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

Additional Details:

• Ratio: 1.98:1
• Drive Gear: 20 teeth
• Driven Gear: 24 teeth
• For: 120/140

Interchanges/Replaces

GLM

• 11245

Mallory

• 9-79203

Mercruiser Stern Drive

• 43-803101T1

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
18-2205	GLM 11240 Mercruiser Stern Drive 43-55766A2 43-55766A3 43-55778A3	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

Additional Details:

• Drive Gear: 20 Teeth
• Driven Gear: 24 Teeth
• Ratios: 1.94:1, 2.40:1
• For: Alpha I (Gen II) (1998 & Up), 0L100040 & Up
• For: Mercruiser Vazer

Use With:

• 18-2411: Driveshaft Housing Assembly
• 18-2419: Complete Upper Unit Assembly

Interchanges/Replaces

Mercruiser Stern Drive

• 43-853642A2

Additional Details:

• Drive Gear: 20 Teeth
• Driven Gear: 22 Teeth
• Ratio: 1.47:1
• For: Alpha I (Gen II) (1998 & Up), 0L100040 & Up

Use With:

• 18-2416: Complete Upper Unit Assembly

Interchanges/Replaces

Mercruiser Stern Drive

• 43-853641A2

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

Additional Details:

• Ratio: 1.84:1
• Drive Gear: 17 teeth
• Driven Gear: 19 teeth
• For: V-6 (470/485)

Interchanges/Replaces

GLM

• 11235

Mercruiser Stern Drive

• 43-803114T1

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
18-2204	GLM 11230 Mercruiser Stern Drive 43-75324A2 43-75325A3	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

Additional Details:

• Upper Gear Kit Ratio: 21:16

Interchanges/Replaces

GLM

• 22520

OMC Stern Drive

• 983825

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1170	Chrysler/Force/US Marine 31-812767A1 GLM 21541 Johnson/Evinrude Outboard 983892 Mercruiser Stern Drive 31-812767A1 Mercury Marine 31-812767A1 31-8M0103476 31-F506225 FA506225 OMC Stern Drive 983892	1	Lower Pinion Bearing		N/A
18-1171	GLM 21543 OMC Stern Drive 983878	1	U-Joint Shaft Bearing		N/A
18-1172	GLM 21542 OMC Stern Drive 983877	1	Carrier 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

Interchanges/Replaces

OMC Stern Drive

• 315189

Additional Details:

• Fits: I, R, MR, Alpha One & Gen II w/ 1.50 ratio

Interchanges/Replaces

GLM

• 21560

Mercruiser Stern Drive

• 31-32573A1

Additional Details:

• For: AQ200-AQ290

Interchanges/Replaces

Mallory

• 9-77902

Volvo Penta

• 576266-8

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
NSS	Volvo Penta 814359	1	V-Ring	No Image	N/A
NSS	Volvo Penta 839195	1	V-Ring	No Image	N/A
NSS	Volvo Penta 814168	1	Gasket	No Image	N/A
18-2040	GLM 87030 Volvo Penta 853670	1	Oil Seal		N/A
18-7183	GLM 45080 Mallory 9-76557 OMC Stern Drive 3852320 925093 Volvo Penta 3852320 925093 975676	1	O-Ring		N/A
18-7184	GLM 45090 Volvo Penta 191198 925256	2	O-Ring
18-7186	GLM 45100 Volvo Penta 925259 960236	1	O-Ring		N/A
18-7149	Volvo Penta 955989	1	O-Ring		N/A
18-3745	Volvo Penta 17253 17253-6	2	Cotter Pin
18-7193	Volvo Penta 955974	1	O-Ring		N/A
18-2990	GLM 87010 Volvo Penta 832669	1	Upper Gear Housing Gasket		N/A
18-2939	GLM 23020 Volvo Penta 814356	1	Rubber Seal		N/A
18-2057	GLM 87070 Volvo Penta 181620	2	Oil Seal
18-4259	Volvo Penta 804261	2	Washer
18-7178	GLM 82130 Johnson/Evinrude Outboard 320140 Mallory 9-76555 OMC Stern Drive 320140 Volvo Penta 125017	2	O-Ring
18-2043	GLM 87050 Volvo Penta 853868 958838	1	Oil Seal		N/A
18-4241	OMC Stern Drive 3852323 951924 Volvo Penta 3852323 951924	1	Roll Pin		N/A

Additional Details:

• Dimensions: 7/64 x 1 1/2"
• For: Alpha Gen II (1991-1998)

Interchanges/Replaces

GLM

• 21419

Mercruiser Stern Drive

• 816685
• 8M0125304
• 8M0137263

Additional Details:

• Ratio: 1:50:1, 1.47:1
• For: Alpha I

Interchanges/Replaces

GLM

• 19100

Mercruiser Stern Drive

• 1547-3917A13
• 1547-3917A21
• 1547-3917A32
• 1547-3917A37
• 1547-5523A12
• 1547-5523A2
• 1547-5523A68
• 1547-5523A9
• 1547-8265A15
• 1547-9412A20
• 1547-9412A30
• 1547-9412A35