Lower Unit Seal Kit 

Additional Details:

• For: IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & SS

Interchanges/Replaces

GLM

• 87510

Mallory

• 9-74304

Mercruiser Stern Drive

• 26-33144A1
• 26-33144A2
• 26-89238A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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
18-2013	GLM 85040 Mallory 9-76108 Mercruiser Stern Drive 26-16977 26-31507 26-79884 802276 Mercury Marine 26-16977 26-20465 26-31507 26-79884 802276	2	Oil Seal		N/A
18-2014	Chrysler/Force/US Marine 26-F694305 GLM 85070 Mallory 9-76109 Mercruiser Stern Drive 26-33144 26-77634 26-89238 Mercury Marine 26-33144 26-77634 26-89238	1	Oil Seal		N/A
18-2076	Chrysler/Force/US Marine 26-12224 26-F697118 GLM 85700 Mallory 9-76101 Mercruiser Stern Drive 26-12224 Mercury Marine 26-12224	1	Oil Seal		N/A
18-2154	GLM 21010 Mallory 9-76133 Mercruiser Stern Drive 23-30617A1 23-30617A2 23-8M0112749 Mercury Marine 23-30617A1	1	Shift Shaft Housing Bushing		N/A
18-2826	GLM 31040 Mallory 9-60036 Mercruiser Stern Drive 27-33146 27-856704 Mercury Marine 27-33146 27-85610 27-856101	1	Water Pump Base Gasket		N/A
18-2914	GLM 31010 Mallory 9-60034 Mercruiser Stern Drive 27-32433 27-856081 27-8M0090319 Mercury Marine 27-30603 27-32433 27-85608 27-856081 27-8M0090319	1	Water Pump Gasket		N/A
18-2915	GLM 31020 Mallory 9-60035 Mercruiser Stern Drive 27-32434 27-856091 27-858524 Mercury Marine 27-30604 27-32434 27-85609 27-856091 27-858524	1	Water Pump Gasket		N/A
18-2919	GLM 31050 Mallory 9-60031 Mercruiser Stern Drive 27-426311 Mercury Marine 27-42631 27-426311	1	Water Pump Gasket		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
18-2948	GLM 31180 Mallory 9-43629 Mercruiser Stern Drive 12-49221 Mercury Marine 12-49221 12-492211 27-23245 Mercury Sport Jet 12-49221	1	Rubber Washer		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
18-7159	GLM 83440 Mallory 9-76544 Mercruiser Stern Drive 25-31534 25-48451 Mercury Marine 25-31534	1	O-Ring		N/A
18-7162	Chrysler/Force/US Marine 25-33145 GLM 82260 Johnson/Evinrude Outboard 302337 Mallory 9-76547 Mercruiser Stern Drive 25-32424 25-33145 Mercury Marine 25-33145 Mercury Sport Jet 25-33145 OMC Stern Drive 302337 302377 3852044 Sears 25-33145 Volvo Penta 3852044	1	O-Ring		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
18-7426	GLM 21330 Mallory 9-76562 Mercruiser Stern Drive 25-30271 Mercury Marine 25-30271 Mercury Sport Jet 25-30271	1	O-Ring		N/A
18-2340	GLM 30010 Mercruiser Stern Drive 12-31266 Mercury Marine 12-31266	1	Shift Shaft Washer		N/A
NSS	Mercruiser Stern Drive 27-29586	1	Gasket, Gear Housing Flushing Screw	No Image	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
18-2009	GLM 85050 Mallory 9-76105 Mercruiser Stern Drive 26-31249 26-46021 26-89236 26-892361 Mercury Marine 26-25776 26-31249 26-89236	1	Oil Seal		N/A