Key Features:

• GM Small Block (V8) 305-350 cu. in.
• Port & Starboard

Additional Details:

• Material: CAST IRON

Use With:

• 18-2949: Exhaust Manifold Gasket
• 18-8502: Exhaust Manifold Mounting Kit
• 18-1909-1: Riser
• 18-2949-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)
• 18-2902-1: Exhaust Manifold Gasket
• 18-2902-1-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)

Interchanges/Replaces

Barr

• OMC 1 914035

GLM

• 51430

HGE

• 4035

Mallory

• 9-40902

OMC Stern Drive

• 3852374
• 3857579
• 3857723
• 914035

Osco

• 57579

Volvo Penta

• 3847501
• 3852374
• 3857723

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-710-16-2		1	Hose Clamp-11/16 TO 1-1/2		N/A
NSS	Volvo Penta 21238201	1	Adaptor, Manifold	No Image	N/A
NSS	Volvo Penta 3852538	1	Brass Elbow	No Image	N/A

Key Features:

• Greasable Gimbal Bearing

Additional Details:

• Fits: R, MR, Alpha I (1983-1990) s/n 6225577 & Up, Alpha I SS (1986-1989) s/n 0A545004 & Up

Interchanges/Replaces

Mallory

• 9-72902

Mercruiser Stern Drive

• 30-803097T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2100	GLM 21900 Mallory 9-72410 Mercruiser Stern Drive 30-60794A2 30-60794A4 30-60794B4 30-879194A02 OMC Stern Drive 3853807 983937 Volvo Penta 21752712 3853807	1	Heavy Duty Gimbal Bearing		N/A
18-2161	GLM 21140 Mallory 9-72153 Mercruiser Stern Drive 45518A1 45518A2 45518A3	1	Shift Arm		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
18-2750	GLM 89100 Mallory 9-72703 Mercruiser Stern Drive 18654A1 32734 32734A3	1	Exhaust Bellows		N/A
18-2751	GLM 89050 Mallory 9-72701 Mercruiser Stern Drive 60932A1 60932A4	1	U-Joint Bellows		N/A
18-3601	GLM 47120 Mallory 9-73001 Mercruiser Stern Drive 32-32461 32-32461A1	1	Water Intake Hose		N/A
18-3602	GLM 47110 Mallory 9-73002 Mercruiser Stern Drive 32-4172533 32-8M0062309 32-8M0109048	1	Water Intake Hose		N/A
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-710-24-2		1	Hose Clamp-1-1/16 TO 2		N/A
18-710-16-2		2	Hose Clamp-11/16 TO 1-1/2

Key Features:

• Greasable Gimbal Bearing

Additional Details:

• For: I, R, MR, Alpha I with exhaust tube

Interchanges/Replaces

GLM

• 21951

Mallory

• 9-72901

Mercruiser Stern Drive

• 30-803098T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2100	GLM 21900 Mallory 9-72410 Mercruiser Stern Drive 30-60794A2 30-60794A4 30-60794B4 30-879194A02 OMC Stern Drive 3853807 983937 Volvo Penta 21752712 3853807	1	Heavy Duty Gimbal Bearing		N/A
18-2751	GLM 89050 Mallory 9-72701 Mercruiser Stern Drive 60932A1 60932A4	1	U-Joint Bellows		N/A
18-2760	GLM 89150 Mallory 9-72810 Mercruiser Stern Drive 78458 78458A1	1	Exhaust Tube		N/A
18-3601	GLM 47120 Mallory 9-73001 Mercruiser Stern Drive 32-32461 32-32461A1	1	Water Intake Hose		N/A
18-3602	GLM 47110 Mallory 9-73002 Mercruiser Stern Drive 32-4172533 32-8M0062309 32-8M0109048	1	Water Intake Hose		N/A
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-2840	GLM 31160 Mercruiser Stern Drive 27-35982	1	Bell Housing Gasket
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
18-7117	GLM 82150 Johnson/Evinrude Outboard 303360 Mallory 9-76507 Mercruiser Stern Drive 25-35027 Mercury Marine 25-35027	1	O-Ring		N/A
18-7170	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
18-7321	GLM 21790 Mallory 9-73115 Mercruiser Stern Drive 54-38863 54-866507 54-8M0090424	1	Bellows Clamp		N/A
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-710-24-2		1	Hose Clamp-1-1/16 TO 2		N/A
18-710-16-2		2	Hose Clamp-11/16 TO 1-1/2

Key Features:

• Greasable Gimbal Bearing

Additional Details:

• For: Alpha I Gen II

Interchanges/Replaces

Mallory

• 9-72904

Mercruiser Stern Drive

• 30-803099T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3602	GLM 47110 Mallory 9-73002 Mercruiser Stern Drive 32-4172533 32-8M0062309 32-8M0109048	1	Water Intake Hose		N/A
18-7321	GLM 21790 Mallory 9-73115 Mercruiser Stern Drive 54-38863 54-866507 54-8M0090424	1	Bellows Clamp		N/A
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-2840	GLM 31160 Mercruiser Stern Drive 27-35982	1	Bell Housing Gasket		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
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
18-2750	GLM 89100 Mallory 9-72703 Mercruiser Stern Drive 18654A1 32734 32734A3	1	Exhaust Bellows		N/A
18-2747	GLM 89180 Mallory 9-72704 Mercruiser Stern Drive 816431A1	1	Drive Bellows		N/A
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-21005	Mallory 9-72412 Mercruiser Stern Drive 30-862540A04 30-862540A3 30-862540T1 30-879194A01	1	Gimbal Bearing		N/A
18-710-16-2		2	Hose Clamp-11/16 TO 1-1/2
18-710-24-2		1	Hose Clamp-1-1/16 TO 2		N/A

Key Features:

• Sealed Gimbal Bearing

Additional Details:

• For: R, MR, Alpha I (1983-1990) s/n 6225577-0D469858: Alpha I SS (1986-1989) s/n 0A545004 & Up

Interchanges/Replaces

Mercruiser Stern Drive

• 30-803097T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-2751	GLM 89050 Mallory 9-72701 Mercruiser Stern Drive 60932A1 60932A4	1	U-Joint Bellows		N/A
18-2750	GLM 89100 Mallory 9-72703 Mercruiser Stern Drive 18654A1 32734 32734A3	1	Exhaust Bellows		N/A
18-21001	Mercruiser Stern Drive 30-60794A2 30-60794A4 30-60794B4 30-879194A02	1	Gimbal Bearing		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
18-2161	GLM 21140 Mallory 9-72153 Mercruiser Stern Drive 45518A1 45518A2 45518A3	1	Shift Arm		N/A
18-710-16-2		2	Hose Clamp-11/16 TO 1-1/2
18-710-24-2		1	Hose Clamp-1-1/16 TO 2		N/A
18-3602	GLM 47110 Mallory 9-73002 Mercruiser Stern Drive 32-4172533 32-8M0062309 32-8M0109048	1	Water Intake Hose		N/A
18-3601	GLM 47120 Mallory 9-73001 Mercruiser Stern Drive 32-32461 32-32461A1	1	Water Intake Hose		N/A

Key Features:

• Sealed Gimbal Bearing

Additional Details:

• For: R, MR, Alpha I (1983-1990) w/exhaust tube s/n 6225577-0D469858
• For: Alpha I SS (1986-1989) w/exhaust tube s/n 0A545004 & Up

Interchanges/Replaces

Mercruiser Stern Drive

• 30-803098T1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2840	GLM 31160 Mercruiser Stern Drive 27-35982	1	Bell Housing Gasket		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
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
18-2743	GLM 31141 Mallory 9-61012 Mercruiser Stern Drive 27-94996 27-949962 27-94996A20	1	Outdrive Mounting Gasket		N/A
18-2753-2	GLM 89080 Mercruiser Stern Drive 31659 74639 74639A2	1	Shift Cable Bellows		N/A
18-2760	GLM 89150 Mallory 9-72810 Mercruiser Stern Drive 78458 78458A1	1	Exhaust Tube		N/A
18-2751	GLM 89050 Mallory 9-72701 Mercruiser Stern Drive 60932A1 60932A4	1	U-Joint Bellows		N/A
18-21001	Mercruiser Stern Drive 30-60794A2 30-60794A4 30-60794B4 30-879194A02	1	Gimbal Bearing		N/A
18-710-24-2		1	Hose Clamp-1-1/16 TO 2		N/A
18-710-16-2		2	Hose Clamp-11/16 TO 1-1/2
18-3601	GLM 47120 Mallory 9-73001 Mercruiser Stern Drive 32-32461 32-32461A1	1	Water Intake Hose		N/A
18-3602	GLM 47110 Mallory 9-73002 Mercruiser Stern Drive 32-4172533 32-8M0062309 32-8M0109048	1	Water Intake Hose		N/A