Key Features:

• Package of 5

Additional Details:

• I.D.: 2.635" or 67mm
• Width: 0.210" or 5.3mm

Interchanges/Replaces

GLM

• 83340

Mallory

• 9-76545

Mercruiser Stern Drive

• 25-31986

Mercury Marine

• 25-31986

Interchanges/Replaces

GLM

• 87530

Mallory

• 9-74202

Mercury Marine

• 26-79831A1

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2008	GLM 85480 Mallory 9-76104 Mercury Marine 26-56788	1	Oil Seal		N/A
18-2011	GLM 85080 Mallory 9-76107 Mercruiser Stern Drive 26-23300 26-90562 Mercury Marine 26-23300 26-29595 26-90562	1	Oil Seal		N/A
18-2048	GLM 85680 Mallory 9-76110 Mercury Marine 26-24590	1	Oil Seal		N/A
18-2051	Chrysler/Force/US Marine 26-69188 GLM 85120 Mallory 9-76113 Mercury Marine 26-69188	1	Oil Seal		N/A
18-2052	Chrysler/Force/US Marine 26-69189 GLM 85520 Mallory 9-76114 Mercury Marine 26-69189	1	Oil Seal		N/A
18-2054	Chrysler/Force/US Marine 26-816464 1 GLM 85581 Honda Outboard 91253-ZW1-003 Mallory 9-76116 Mercruiser Stern Drive 26-8164641 Mercury Marine 26-76384 26-816464 26-8164641	1	Oil Seal		N/A
18-2055	GLM 85580 Mallory 9-76117 Mercruiser Stern Drive 26-21642 26-26782 Mercury Marine 26-21642 26-26782 26-79831	1	Oil Seal		N/A
18-2823	GLM 31060 Mallory 9-60039 Mercruiser Stern Drive 27-32769 Mercury Marine 27-19553 27-32769	1	Lower Water Pump Gasket		N/A
18-2824	GLM 31070 Mallory 9-60029 Mercury Marine 27-19551 27-32770	1	Upper Water Pump Gasket		N/A
18-2825	GLM 31080 Mallory 9-60030 Mercury Marine 27-32771	1	Water Pump Base Gasket		N/A
18-2841	GLM 31190 Mallory 9-60033 Mercury Marine 27-19552 27-77417	1	Water Pump Base 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
18-7115	GLM 82240 Johnson/Evinrude Outboard 302588 Mercruiser Stern Drive 25-20266 25-26722 Mercury Marine 25-20266 25-26722 OMC Stern Drive 302588	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	1	O-Ring		N/A
18-7155	Chrysler/Force/US Marine 25-26855 GLM 82230 Johnson/Evinrude Outboard 305270 Mallory 9-76541 Mercruiser Stern Drive 25-26855 Mercury Marine 25-26855 Yamaha Outboard 93210-41MJ2-00	1	O-Ring		N/A
18-7160	GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986	1	O-Ring		N/A
18-7174	Chrysler/Force/US Marine 25-45711 25-F455342 GLM 81140 Johnson/Evinrude Outboard 326649 553127 Mallory 9-76553 Mercruiser Stern Drive 25-45711 Mercury Marine 25-45711 Mercury Sport Jet 25-45711 OMC Stern Drive 326649 553127 910582	1	O-Ring		N/A
18-2316	GLM 30030 Mercruiser Stern Drive 12-77674 Mercury Marine 12-77674	1	Washer		N/A
NSS	Mercury Marine 26-38452	1	Seal	No Image	N/A

Key Features:

• Does not include head gaskets

Interchanges/Replaces

GLM

• 39190

Mercury Marine

• 27-46110A1
• 27-46110A2
• 27-46110A72
• 27-72486A32
• 27-72486A76
• 27-72486A78
• 27-72486A79

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0103	GLM 30990 Mercury Marine 27-37725 27-72496 27-79650 27-796501	2	Powerhead Base Gasket		N/A
18-0137	GLM 31790 Mercury Marine 27-46111 27-72488 27-85492 27-85492-2 27-854921 27-854924	1	Baffle Plate Gasket		N/A
18-0870	GLM 30060 Mallory 9-60063 Mercury Marine 27-27936 27-279361	2	Transfer Port Cover Gasket		N/A
18-0879	GLM 31400 Mallory 9-60042 Mercury Marine 27-37724 27-38501 27-385011	1	Adapter Plate Gasket		N/A
18-0938	GLM 31000 Mercury Marine 27-797971	1	Water Inlet Gasket		N/A
18-0942	GLM 31780 Mercury Marine 27-46110 27-72486 27-85491 27-85491-2 27-854911 27-854913	1	Baffle Plate Gasket		N/A
18-2507	GLM 31890 Mercury Marine 27-37816 27-72487 27-78026 27-85487	1	Cylinder Block Cover Gasket		N/A
18-2571	GLM 31300 Mercury Marine 27-31402	2	Carburetor Flange Gasket		N/A
18-2800	GLM 31860 Mercury Marine 27-26891 27-64659 27-75791 27-757911	2	Carburetor Mounting Gasket		N/A
18-2810	GLM 30260 Mercury Marine 27-43777 27-437771 27-437772 27-96483	1	Block Cover Gasket		N/A
18-2823	GLM 31060 Mallory 9-60039 Mercruiser Stern Drive 27-32769 Mercury Marine 27-19553 27-32769	1	Lower Water Pump Gasket		N/A
18-2824	GLM 31070 Mallory 9-60029 Mercury Marine 27-19551 27-32770	1	Upper Water Pump Gasket		N/A
18-2825	GLM 31080 Mallory 9-60030 Mercury Marine 27-32771	1	Water Pump Base Gasket		N/A
18-2841	GLM 31190 Mallory 9-60033 Mercury Marine 27-19552 27-77417	1	Water Pump Base Gasket		N/A
18-7115	GLM 82240 Johnson/Evinrude Outboard 302588 Mercruiser Stern Drive 25-20266 25-26722 Mercury Marine 25-20266 25-26722 OMC Stern Drive 302588	1	O-Ring		N/A
18-7151	GLM 82340 Mallory 9-76540 Mercruiser Stern Drive 25-20081 25-39572 Mercury Marine 25-20081 25-39572	2	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	1	O-Ring		N/A
18-7155	Chrysler/Force/US Marine 25-26855 GLM 82230 Johnson/Evinrude Outboard 305270 Mallory 9-76541 Mercruiser Stern Drive 25-26855 Mercury Marine 25-26855 Yamaha Outboard 93210-41MJ2-00	1	O-Ring		N/A
18-7160	GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986	1	O-Ring		N/A
18-7413	Chrysler/Force/US Marine 25-62702 25-F50342-1 F17510 F50342 GLM 80110 Johnson/Evinrude Outboard 303191 Mercruiser Stern Drive 25-62702 25-627021 Mercury Marine 25-22175 25-62702 Mercury Sport Jet 25-62702 OMC Stern Drive 303191	2	O-Ring		N/A
18-7421	GLM 80070 Mercury Marine 25-16524 25-20415	1	O-Ring		N/A
18-7804	GLM 40310 Mercury Marine 23014A1	1	Fuel Pump Kit		N/A
18-7174	Chrysler/Force/US Marine 25-45711 25-F455342 GLM 81140 Johnson/Evinrude Outboard 326649 553127 Mallory 9-76553 Mercruiser Stern Drive 25-45711 Mercury Marine 25-45711 Mercury Sport Jet 25-45711 OMC Stern Drive 326649 553127 910582	1	O-Ring		N/A
NSS	Mercury Marine 27-29166	1	Gasket, Magneto Cover	No Image	N/A
NSS	Mercury Marine 27-45910	1	Gasket, Adapter to Primary Housing	No Image	N/A
NSS	Mercury Marine 27-46351	1	Gasket, Adapter to Primary Housing	No Image	N/A
NSS	Mercury Marine 27-36268	1	Gasket, Distributor Cap to Adaptor	No Image	N/A
NSS	Mercury Marine 27-47189	1	Gasket, Ignition Driver Cover	No Image	N/A
NSS	Mercury Marine 27-47190	1	Gasket, Ignition Driver Cap	No Image	N/A
NSS	Mercury Marine 27-25725	1	Gasket, End Cap Cover	No Image	N/A
NSS	Mercury Marine 37641 37641001	1	Seal	No Image	N/A

Key Features:

• Does not include head gaskets

Interchanges/Replaces

GLM

• 39330

Mercury Marine

• 27-55306A72
• 27-55306A73
• 27-55306A74
• 27-55306A75
• 27-78028A78

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0105	GLM 31910 Mercury Marine 27-55306 27-78028 27-85489 27-85489-2 27-854891 27-856728	1	Baffle Plate to Block Gasket		N/A
18-0182	GLM 30610 Johnson/Evinrude Outboard 310058 Mallory 9-60002 Mercury Marine 27-62386 27-62386001 Mercury Race Outboard 27-62386001	1	Thermostat Gasket		N/A
18-0879	GLM 31400 Mallory 9-60042 Mercury Marine 27-37724 27-38501 27-385011	1	Adapter Plate Gasket		N/A
18-0914	GLM 30720 Mercury Marine 27-66847	1	Thermostat Cover Gasket		N/A
18-0938	GLM 31000 Mercury Marine 27-797971	1	Water Inlet Gasket		N/A
18-0940	GLM 32930 Mercury Marine 27-55308 27-78027 27-85488 27-854881 27-854882	1	Baffle Plate to Exhaust Gasket		N/A
18-0988	GLM 31640 Mallory 9-60058 Mercury Marine 27-37976 27-62860 27-628601	1	Powerhead Base Gasket		N/A
18-2802	GLM 31500 Mercury Marine 27-48164 27-481641	1	Carburetor Mounting Gasket		N/A
18-2805	GLM 31920 Mercury Marine 27-55307 27-74708 27-78029 27-85490 27-85490-2 27-854901 27-856729	1	Block Cover Gasket		N/A
18-2823	GLM 31060 Mallory 9-60039 Mercruiser Stern Drive 27-32769 Mercury Marine 27-19553 27-32769	1	Lower Water Pump Gasket		N/A
18-2824	GLM 31070 Mallory 9-60029 Mercury Marine 27-19551 27-32770	1	Upper Water Pump Gasket		N/A
18-2825	GLM 31080 Mallory 9-60030 Mercury Marine 27-32771	1	Water Pump Base Gasket		N/A
18-2838	GLM 31600 Mercury Marine 27-55279 27-552791	1	Transfer Port Cover Gasket		N/A
18-2841	GLM 31190 Mallory 9-60033 Mercury Marine 27-19552 27-77417	1	Water Pump Base Gasket		N/A
18-4261	GLM 31330 Mallory 9-78002 Mercury Marine 12-20262 19643 Mercury Race Outboard 12-20262	1	Washer		N/A
18-7115	GLM 82240 Johnson/Evinrude Outboard 302588 Mercruiser Stern Drive 25-20266 25-26722 Mercury Marine 25-20266 25-26722 OMC Stern Drive 302588	1	O-Ring		N/A
18-7143	GLM 81250 Johnson/Evinrude Outboard 331188 Mallory 9-76537 Mercruiser Stern Drive 25-65936 27-58025 391-5081 Mercury Marine 25-65936 OMC Stern Drive 322501 331188 Volvo Penta 3852169	2	O-Ring		N/A
18-7145	GLM 81080 Johnson/Evinrude Outboard 333572 Mallory 9-76500 Mercruiser Stern Drive 25-64068 Mercury Marine 25-64068 OMC Stern Drive 333572	3	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	1	O-Ring		N/A
18-7155	Chrysler/Force/US Marine 25-26855 GLM 82230 Johnson/Evinrude Outboard 305270 Mallory 9-76541 Mercruiser Stern Drive 25-26855 Mercury Marine 25-26855 Yamaha Outboard 93210-41MJ2-00	1	O-Ring		N/A
18-7160	GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986	1	O-Ring		N/A
18-7167	Chrysler/Force/US Marine 785-97386 GLM 82390 Johnson/Evinrude Outboard 310414 Mallory 9-76549 Mercruiser Stern Drive 25-861844 785-97386 Mercury Marine 25-861844 785-97386 OMC Stern Drive 310414	1	O-Ring		N/A
18-7411	GLM 81240 Johnson/Evinrude Outboard 321921 Mercruiser Stern Drive 25-35480 25-8M2000816 Mercury Marine 25-35480 25-47386	1	O-Ring		N/A
18-7413	Chrysler/Force/US Marine 25-62702 25-F50342-1 F17510 F50342 GLM 80110 Johnson/Evinrude Outboard 303191 Mercruiser Stern Drive 25-62702 25-627021 Mercury Marine 25-22175 25-62702 Mercury Sport Jet 25-62702 OMC Stern Drive 303191	3	O-Ring		N/A
18-7414	GLM 80330 Mercury Marine 25-62384 25-64067 25-823683 Mercury Sport Jet 25-823683	1	O-Ring		N/A
18-7421	GLM 80070 Mercury Marine 25-16524 25-20415	1	O-Ring		N/A
18-7807	GLM 40320 Me cury Marine 55278A1	1	Fuel Pump Kit		N/A
NSS	Mercury Marine 25-62457	1	O-Ring	No Image	N/A
NSS	Mercury Marine 35-59072	1	Fuel Filter Screen	No Image	N/A
NSS	Mercury Marine 27-62396	1	Gasket	No Image	N/A
NSS	Mercury Marine 27-62716	1	Gasket	No Image	N/A

Additional Details:

• Fits: SX-A Drives (2007 and Up)

Interchanges/Replaces

Volvo Penta

• 3888821

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
NSS	Volvo Penta 38889784	1	H Gasket	No Image	N/A
NSS	Volvo Penta 38889786	1	H Gasket	No Image	N/A
NSS	Volvo Penta 3863090	1	Seal	No Image	N/A
18-7186	GLM 45100 Volvo Penta 925259 960236	2	O-Ring
18-7160	GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986	1	O-Ring		N/A
18-0175	GLM 81080 Mercruiser Stern Drive 25-26543 Mercury Marine 25-26543	1	O-Ring		N/A

Additional Details:

• Fits: DPS-A Drives (2007 and Up)

Interchanges/Replaces

Volvo Penta

• 3888822

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
NSS	Volvo Penta 38889784	1	H Gasket	No Image	N/A
NSS	Volvo Penta 38889786	1	H Gasket	No Image	N/A
18-0175	GLM 81080 Mercruiser Stern Drive 25-26543 Mercury Marine 25-26543	1	O-Ring		N/A
18-7160	GLM 83340 Mallory 9-76545 Mercruiser Stern Drive 25-31986 Mercury Marine 25-31986	1	O-Ring		N/A
18-7186	GLM 45100 Volvo Penta 925259 960236	2	O-Ring
18-0558	Volvo Penta 851407	2	Seal