Sierra / Mallory

Additional Details:

• Use: with aluminum exhaust manifold
• Fits: 110/120 & 140/150/160 (I/L 6 cyl.) also MCM 3.0L/LX w/closed cooling

Interchanges/Replaces

GLM

• 35060

Mallory

• 9-60009

Mercruiser Stern Drive

• 27-33918
• 27-8M2021920

OMC Stern Drive

• 312797
• 3852111

Volvo Penta

• 3852111
• 835417

Interchanges/Replaces

Johnson/Evinrude Outboard

• 337068

Interchanges/Replaces

GLM

• 30610

Johnson/Evinrude Outboard

• 310058

Mallory

• 9-60002

Mercury Marine

• 27-62386
• 27-62386001

Mercury Race Outboard

• 27-62386001

Key Features:

• V-6

Interchanges/Replaces

GLM

• 33600

Johnson/Evinrude Outboard

• 321184

Mallory

• 9-60449

Additional Details:

• Fits: MCM/MIE 470

Interchanges/Replaces

GLM

• 31840

Mercruiser Stern Drive

• 27-74830

Additional Details:

• Fits: MCM/MIE GM V-8 engines

Interchanges/Replaces

Barr

• MC472748818

GLM

• 31510

Mallory

• 9-60010

Mercruiser Stern Drive

• 27-48818
• 27-488181
• 27-48818Q01

Interchanges/Replaces

Barr

• OMC47314809

GLM

• 33440

Mallory

• 9-60016

OMC Stern Drive

• 314809
• 3852127

Volvo Penta

• 3852127

Interchanges/Replaces

GLM

• 33840

Mallory

• 9-60017

OMC Stern Drive

• 310913

Additional Details:

• Fits: MCM/MIE GM V-6 & V-8 engines

Interchanges/Replaces

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

Key Features:

• Models with Power Trim

Interchanges/Replaces

GLM

• 23010

Mallory

• 9-44003

Volvo Penta

• 832846

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2939	GLM 23020 Volvo Penta 814356	1	Rubber Seal		N/A

Additional Details:

• Fits: MCM/MIE GM V-6 & V-8 (305 & 350 cid)engines & Hi-Perf 454, 502 & 540 cid engines

Interchanges/Replaces

Barr

• MC2947441

GLM

• 13220

Mallory

• 9-42503
• 9-42506

Mercruiser Stern Drive

• 47441
• 47441A1

Osco

• MC55-TSB

Key Features:

• Models with Power Trim

Interchanges/Replaces

GLM

• 23011

Volvo Penta

• 854031

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2939	GLM 23020 Volvo Penta 814356	1	Rubber Seal		N/A

Additional Details:

• Material: Stainless Steel
• Fits: MCM/MIE GM V-8 (454 & 502 cid) engines

Use With:

• 18-1989K: Thermostat Service Kit

Interchanges/Replaces

Mallory

• 9-42500

Mercruiser Stern Drive

• 861006A1
• 8M0061381

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4264	GLM 21894 Mallory 9-40546 Mercruiser Stern Drive 22-32803 22-87543 FI5880010 Mercury Marine 22-32803	3	Pipe Plug
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
NSS	Mercruiser Stern Drive 23-806922	1	Sleeve	No Image	N/A

Interchanges/Replaces

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

Additional Details:

• Temperature Rating: 145° (63 C)

Interchanges/Replaces

GLM

• 13381

Mallory

• 9-43004

Volvo Penta

• 875794
• 876305

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-3551	Chrysler Inboard 4142885 Crusader 96319 GLM 13030 Mallory 9-43013 Mercruiser Stern Drive 32728 35884 59137 59137A1 67464 8052731 8072521 807252T1 8M0089715 Osco 143-DEG Pleasurecraft RO26002E	1	Thermostat		N/A
18-2933	Mallory 9-60001 Volvo Penta 1317466 416033 418361	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:

• Temperature Rating: 170° (77 C)

Interchanges/Replaces

Mallory

• 9-43008

Volvo Penta

• 3831425
• 875787

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

Key Features:

• Includes sealing ring

Additional Details:

• Temperature Rating: 160° (71 C)

Interchanges/Replaces

Mallory

• 9-43009

Volvo Penta

• 3831426

Additional Details:

• Temperature Rating: 180° (82 C)

Interchanges/Replaces

Mallory

• 9-43010

Volvo Penta

• 875580

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

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