Sierra / Mallory

Interchanges/Replaces

GLM

• 13430

Mallory

• 9-43156

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2858	Barr OMC47314809 GLM 33440 Mallory 9-60016 OMC Stern Drive 314809 3852127 Volvo Penta 3852127	1	Thermostat Gasket		N/A
18-2947	GLM 33840 Mallory 9-60017 OMC Stern Drive 310913	1	Thermostat Gasket		N/A
18-3554	GLM 13060 Mallory 9-43021 OMC Inboard 383307 OMC Stern Drive 379754 383307 3852216 3856961 Volvo Penta 3856961	1	Thermostat		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
18-0929	GLM 34260 Johnson/Evinrude Outboard 313416 OMC Stern Drive 313416 3852120 Volvo Penta 3852120	1	Thermostat Gasket		N/A
18-0398	GLM 35060 Mallory 9-60009 Mercruiser Stern Drive 27-33918 27-8M2021920 OMC Stern Drive 312797 3852111 Volvo Penta 3852111 835417 856347	1	Thermostat Gasket		N/A

Additional Details:

• Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat
• Temperature rating: 160°F

Interchanges/Replaces

GLM

• 13101

Mallory

• 9-43157

Mercruiser Stern Drive

• 807252Q5
• 807252T8

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2552	GLM 31670 Mallory 9-60008 Mercruiser Stern Drive 27-331791 27-331792 27-33179B2	1	Thermostat Cover Gasket		N/A
18-2553	GLM 31460 Mallory 9-60005 Mercruiser Stern Drive 27-47510 27-47510Q Osco 47510	1	Thermostat Cover Gasket		N/A
18-2844	Barr MC472748818 GLM 31510 Mallory 9-60010 Mercruiser Stern Drive 27-48818 27-488181 27-48818Q01	1	Thermostat Gasket		N/A
18-2917	GLM 31560 GM 3701777 Mallory 9-60007 9-60007-10 Mercruiser Stern Drive 27-33179 27-53045 27-530451 27-53045B1 F10077105 FI1101276 FI1101291 FI5000096 OMC Inboard 3701777 OMC Stern Drive 3701777	1	Thermostat Gasket		N/A
18-3649	Crusader 97895 GLM 13100 Mallory 9-43002 Mercruiser Stern Drive 8052732 8072522 807252T2 8M0091470 8M0109441	1	Thermostat		N/A
18-7173	Chrysler/Force/US Marine 25-30224 GLM 82250 Johnson/Evinrude Outboard 310327 Mallory 9-76501 Mercruiser Stern Drive 25-30224 25-30224Q Mercury Marine 25-27018 25-30224 25-30224Q OMC Stern Drive 310327	1	O-Ring		N/A
18-0398	GLM 35060 Mallory 9-60009 Mercruiser Stern Drive 27-33918 27-8M2021920 OMC Stern Drive 312797 3852111 Volvo Penta 3852111 835417 856347	1	Thermostat Gasket		N/A

Additional Details:

• Temperature Rating: 122°F / 50°C

Interchanges/Replaces

Mallory

• 9-43177

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0844	Mallory 9-60003 Yamaha Outboard 688-12414-00-00 688-12414-A1-00	1	Thermostat Cover Gasket		N/A
18-3540	Mallory 9-43035 Yamaha Outboard 688-12411-00-00 688-12411-01-00 688-12411-10-00 688-12411-11-00 6E5-12411-10-00 6E5-12411-20-00 6E5-12411-30-00	1	Thermostat		N/A

Additional Details:

• Temperature Rating: 122°F / 50°C

Interchanges/Replaces

Mallory

• 9-43038
• 9-43178

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0829	Mallory 9-60510 Yamaha Outboard 61A-12414-A0-00 6H2-12414-00-00 6H2-12414-A0-00 6J8-12414-A0-00	1	Cover Gasket		N/A
18-3540	Mallory 9-43035 Yamaha Outboard 688-12411-00-00 688-12411-01-00 688-12411-10-00 688-12411-11-00 6E5-12411-10-00 6E5-12411-20-00 6E5-12411-30-00	1	Thermostat		N/A

Key Features:

• For: 7.4L (1994-98), 8.2L (1998)

Additional Details:

• Temperature Rating: 140° (60 C)
• Thermostat: 0986506, 3853983

Interchanges/Replaces

Mallory

• 9-43026

OMC Stern Drive

• 3853983 + 312797 + 307239

Volvo Penta

• 3853983 + 3852071 + 835417

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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
18-0398	GLM 35060 Mallory 9-60009 Mercruiser Stern Drive 27-33918 27-8M2021920 OMC Stern Drive 312797 3852111 Volvo Penta 3852111 835417 856347	1	Thermostat Gasket		N/A
NSS	Volvo Penta 3853983	1	Thermostat	No Image	N/A

Additional Details:

• Temperature Rating: 160°F (71°C)

Interchanges/Replaces

Mallory

• 9-43028

Volvo Penta

• 3856961 + 835417 + 3852071

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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
18-0398	GLM 35060 Mallory 9-60009 Mercruiser Stern Drive 27-33918 27-8M2021920 OMC Stern Drive 312797 3852111 Volvo Penta 3852111 835417 856347	1	Thermostat Gasket		N/A
18-3554	GLM 13060 Mallory 9-43021 OMC Inboard 383307 OMC Stern Drive 379754 383307 3852216 3856961 Volvo Penta 3856961	1	Thermostat		N/A

Additional Details:

• Temperature Rating: 160°

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2553	GLM 31460 Mallory 9-60005 Mercruiser Stern Drive 27-47510 27-47510Q Osco 47510	1	Thermostat Cover Gasket		N/A
18-3649	Crusader 97895 GLM 13100 Mallory 9-43002 Mercruiser Stern Drive 8052732 8072522 807252T2 8M0091470 8M0109441	1	Thermostat		N/A
18-0398	GLM 35060 Mallory 9-60009 Mercruiser Stern Drive 27-33918 27-8M2021920 OMC Stern Drive 312797 3852111 Volvo Penta 3852111 835417 856347	1	Thermostat Gasket		N/A

Additional Details:

• Temperature Rating: 160°F

Interchanges/Replaces

GLM

• 13400

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2555	GLM 32100 Mercruiser Stern Drive 27-89656 27-896561	1	Thermostat Cover Gasket		N/A
18-2843	Barr MC472774830 GLM 31840 Mercruiser Stern Drive 27-74830	1	Thermostat Gasket		N/A
18-3552	Crusader 96358 GLM 13050 Mallory 9-43000 Mercruiser Stern Drive 76270 76270T	1	Thermostat		N/A

Additional Details:

• Temperature Rating: 160° F

Interchanges/Replaces

GLM

• 13420

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2555	GLM 32100 Mercruiser Stern Drive 27-89656 27-896561	1	Thermostat Cover Gasket		N/A
18-3555	GLM 13040 Mallory 9-43001 9-43016 Mercruiser Stern Drive 991551 99155A1 99155T2	1	Thermostat		N/A

Interchanges/Replaces

GLM

• 13450

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0929	GLM 34260 Johnson/Evinrude Outboard 313416 OMC Stern Drive 313416 3852120 Volvo Penta 3852120	1	Thermostat Gasket		N/A
18-2548	GLM 34630 Johnson/Evinrude Outboard 317226 332108	1	Thermostat Cover Gasket		N/A
18-3557	Chrysler/Force/US Marine F335068 GLM 13080 Johnson/Evinrude Outboard 382385 396987 Mallory 9-43024 Mercruiser Stern Drive 47594 Volvo Penta 21148403	1	Thermostat		N/A

Key Features:

• Fits: 2.5L & 3.0L (1982-88)

Additional Details:

• Temperature Rating: 160° (71 C)

Interchanges/Replaces

GLM

• 13440

Volvo Penta

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0929	GLM 34260 Johnson/Evinrude Outboard 313416 OMC Stern Drive 313416 3852120 Volvo Penta 3852120	1	Thermostat Gasket		N/A
18-2858	Barr OMC47314809 GLM 33440 Mallory 9-60016 OMC Stern Drive 314809 3852127 Volvo Penta 3852127	1	Thermostat Gasket		N/A
18-3558	GLM 13070 OMC Stern Drive 3853799 982554 Volvo Penta 3853799	1	Thermostat		N/A

Use With:

• 18-3543: Thermostat

Interchanges/Replaces

GLM

• 13270

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0675	GLM 34440 Johnson/Evinrude Outboard 321932	2	Thermostat Gasket		N/A
18-0977	GLM 33650 Johnson/Evinrude Outboard 321897 332369 Mallory 9-60448	2	Thermostat Gasket		N/A
18-2391	GLM 86481 Johnson/Evinrude Outboard 321692	2	Grommet (V4 Crossflow)		N/A
18-3564	GLM 46170 Johnson/Evinrude Outboard 318395	2	Poppet Relief Valve (V4 Crossflow)		N/A
18-1243	GLM 46150 Johnson/Evinrude Outboard 317245	2	Valve Spring (V4/V6 Crossflow)		N/A
18-3543	Johnson/Evinrude Outboard 378065 393659 434841 437414 5005440 508626	2	Thermostat		N/A

Use With:

• 18-3543: Thermostat

Interchanges/Replaces

GLM

• 13280

Johnson/Evinrude Outboard

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1219	GLM 46100 Johnson/Evinrude Outboard 320880	1	Grommet Gasket (V6 Crossflow)		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
18-3135	GLM 22370 Johnson/Evinrude Outboard 306643 Mallory 9-48219 OMC Stern Drive 3852066 Volvo Penta 3852066	1	Stainless Steel Bolt (Priced Per Piece)		N/A
18-2546	GLM 33600 Johnson/Evinrude Outboard 321184 Mallory 9-60449	1	Thermostat Gasket		N/A
18-3567	GLM 46140 Johnson/Evinrude Outboard 321221	1	Rubber Valve (V6 Crossflow)		N/A
18-3562	GLM 46120 Johnson/Evinrude Outboard 321222	1	Valve Cup (V6 Crossflow)		N/A
18-1243	GLM 46150 Johnson/Evinrude Outboard 317245	1	Valve Spring (V4/V6 Crossflow)		N/A
18-3563	GLM 46180 Johnson/Evinrude Outboard 321027	1	Poppet Relief Valve (V6 Crossflow)		N/A
18-3565	GLM 46160 Johnson/Evinrude Outboard 321220	1	Retainer (V6 Crossflow)		N/A
18-3543	Johnson/Evinrude Outboard 378065 393659 434841 437414 5005440 508626	1	Thermostat		N/A

Additional Details:

• Temperature Rating: 180° (82 C)

Interchanges/Replaces

Volvo Penta

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2933	Mallory 9-60001 Volvo Penta 1317466 416033 418361	1	Thermostat Gasket		N/A
18-7181	GLM 45060 Volvo Penta 925091 975672	1	O-Ring		N/A

Additional Details:

• Temperature Rating: 160° (71 C)

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3558	GLM 13070 OMC Stern Drive 3853799 982554 Volvo Penta 3853799	1	Thermostat		N/A
18-0164	GLM 31340 Mallory 9-60074 Mercruiser Stern Drive 27-8146801 OMC Stern Drive 311069 3789161 3852096 Volvo Penta 3852096 Yamaha Sterndrive GM 3789161 YSC-13080-00-0C	1	Thermostat Housing Gasket		N/A
NSS	Mercruiser Stern Drive 25-805063	1	O-Ring	No Image	N/A

Key Features:

• 6H3-12411-11-00 + 62Y-12414-00-00 = 18-3622 kit

Additional Details:

• Temperature Rating: 122°F / 50°C

Interchanges/Replaces

Yamaha Outboard

• 6H3-12411-00-00
• 6H3-12411-01-00
• 6H3-12411-10-00
• 6H3-12411-11-00

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0835	Mercury Marine 27-824853 27-8248531 Yamaha Outboard 62Y-12414-00-00 65W-12414-00-00 6H2-12414-00-00 6H2-12414-A1-00	1	Thermostat Gasket		N/A

Additional Details:

• Temperature Rating: 145° (63 C)

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3557	Chrysler/Force/US Marine F335068 GLM 13080 Johnson/Evinrude Outboard 382385 396987 Mallory 9-43024 Mercruiser Stern Drive 47594 Volvo Penta 21148403	1	Thermostat		N/A
18-0164	GLM 31340 Mallory 9-60074 Mercruiser Stern Drive 27-8146801 OMC Stern Drive 311069 3789161 3852096 Volvo Penta 3852096 Yamaha Sterndrive GM 3789161 YSC-13080-00-0C	1	Thermostat Housing Gasket		N/A
NSS	Mercruiser Stern Drive 25-805063	1	O-Ring	No Image	N/A

Additional Details:

• For: Volvo 8.1 (All Models) 2000-Current

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
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

Additional Details:

• Temperature Rating: 130°F

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3535	Mercury Marine 885599003 885599004 8855991 8M0057307	2	Thermostat		N/A
18-3675	Mercury Marine 27-850318 27-8503181 Mercury Sport Jet 27-8503181	2	Thermostat Cover Gasket		N/A

Additional Details:

• Temperature Rating: 60° Celcius

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3541	Mallory 9-43037 Yamaha Outboard 66M-12411-00-00 66M-12411-01-00 6G8-12411-00-00 6G8-12411-01-00 6G8-12411-02-00 6G8-12411-03-00	1	Thermostat		N/A
18-0835	Mercury Marine 27-824853 27-8248531 Yamaha Outboard 62Y-12414-00-00 65W-12414-00-00 6H2-12414-00-00 6H2-12414-A1-00	1	Thermostat Gasket		N/A