Lower Unit Seal Kit 

Interchanges/Replaces

GLM

• 87574

Mallory

• 9-74212

Mercury Marine

• 26-77066A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0584	Chrysler/Force/US Marine 26-66022 26-F346118 F346116 F901118 F901118-1 F901118-2 GLM 86840 Mercury Marine 26-66022	1	Oil Seal		N/A
18-2010	GLM 85610 Mallory 9-76106 Mercury Marine 26-77066 26-897153 26-96063	1	Oil Seal		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
18-4261	GLM 31330 Mallory 9-78002 Mercury Marine 12-20262 19643 Mercury Race Outboard 12-20262	1	Washer		N/A
18-7116	Chrysler/Force/US Marine 25-62704 25-F24342 GLM 81100 Johnson/Evinrude Outboard 303067 Mallory 9-43631 Mercruiser Stern Drive 25-62704 802206 Mercury Marine 25-20633 25-22174 25-62704 25-85148 802206 OMC Stern Drive 303067 3852045 Volvo Penta 3852045	1	O-Ring		N/A
18-7120	Chrysler/Force/US Marine 25-25007 25-38933 25-F498618 26-817469 27-843672 F498619 GLM 80090 Johnson/Evinrude Outboard 307853 Mallory 9-76526 Mercury Marine 25-38933 Mercury Sport Jet 25-38933 OMC Stern Drive 307853 332598	1	O-Ring		N/A
18-7156	GLM 81230 Johnson/Evinrude Outboard 309731 Mercruiser Stern Drive 25-29439 Mercury Marine 25-29439 OMC Stern Drive 309731	1	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	1	O-Ring		N/A
18-7171	GLM 81360 Mercruiser Stern Drive 25-30529 Mercury Marine 25-30529	1	O-Ring		N/A
18-7180	GLM 45030 Johnson/Evinrude Outboard 303347 Mallory 9-76556 Mercruiser Stern Drive 12-31060 25-26802 25-8M2000926 Mercury Marine 25-26802 Volvo Penta 3551570 925055 926032	1	O-Ring		N/A
18-8308	Mercury Marine 26-30696	1	Shift Shaft Seal		N/A
18-8310	Mercury Marine 26-30900 26-30900T	1	Water Pump Base Seal		N/A
18-0516	GLM 85270 Mercury Marine 26-22736 26-30913	1	Oil Seal		N/A
NSS	Mercury Marine 26-33613	2	Seal	No Image	N/A
NSS	Mercury Marine 26-36558	1	Seal	No Image	N/A
NSS	Mercury Marine 25-30526	1	Bushing	No Image	N/A