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: 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:

• For: OMC Cobra 1986-93

Interchanges/Replaces

GLM

• 28325

OMC Stern Drive

• 983880

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-6399	Mallory 9-72202 OMC Stern Drive 984264	1	Shaft & Stub Assembly		N/A
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
18-2146	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)