Sierra / Mallory

Key Features:

• Sender Code "D"

Additional Details:

• Thread Size: 3/8" or 9.5mm -18 NPT
• Terminal Type: 10-32 stud
• Range: 240° DS
• Fits: MCM/MIE engines

Interchanges/Replaces

Mallory

• 9-42400

Medallion

• A-2618-3

Mercruiser Stern Drive

• 22-811091
• 36525
• 806490
• 806490T
• 97257
• 97257A1

OMC Stern Drive

• 3853787
• 980613

Stewart Warner

• 352BC-D

Veethree Seastar

• 52320S018

Volvo Penta

• 3853787

Key Features:

• Sender Code "D"

Additional Details:

• Thread Size: 1/2" or 12.7mm -14 NPT
• Terminal Type: 10-32 stud
• Range: 240° DS
• Fits: MCM/MIE engines

Interchanges/Replaces

Crusader

• 700427

Mallory

• 9-42401

Medallion

• A-2618-4

Mercruiser Stern Drive

• 34625
• 97258
• 97258A1
• FI6900152
• FI6900198

OMC Inboard

• 171960

OMC Stern Drive

• 171960

Stewart Warner

• 362BB-D

Veethree Seastar

• 52320S017

Key Features:

• Sender Code "D"

Additional Details:

• Thread Size: 1/8" or 3.2mm - 27 NPT
• Range: 240°
• Terminal Type: 10-32 stud

Interchanges/Replaces

Faria

• 90401

Medallion

• B-936

Mercury Marine

• 12415

Stewart Warner

• 362CZ-D

Veethree Seastar

• 52320S010

Interchanges/Replaces

Westerbeke

• 35109

Key Features:

• Tests quality of fuel by measuring alcohol content

Interchanges/Replaces

Mallory

• 9-79816

Mercury Marine

• 91-879172T28

Additional Details:

• Temperature Rating: 140°F / 60°C

Interchanges/Replaces

Yamaha Outboard

• 67F-12411-00-00
• 67F-12411-01-00
• 6CB-12411-00-00

Key Features:

• For: Ford 302 / 351 CID Engines

Additional Details:

• Temperature Rating: 142°F
• Used on all: V-8 Chrysler engines w/Rochester carburetors 1986 - present
• For: Raw water cooled engines

Use With:

• 18-3646: Thermostat Kit
• 18-3646D: Thermostat Kit (Display Pack)
• 18-3651: Thermostat Kit
• 18-3651D: Thermostat Kit (Display Pack)
• 18-3662: Thermostat Kit
• 18-3668: Thermostat Kit
• 18-3668D: Thermostat Kit (Display Pack)
• 18-3671: Thermostat Kit
• 18-3671D: Thermostat Kit (Display Pack)

Interchanges/Replaces

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

Additional Details:

• Temperature Rating: 120°F

Use With:

• 18-3569: Thermostat Kit
• 18-43052: Thermostat Kit

Interchanges/Replaces

GLM

• 13120

Mallory

• 9-43014

Mercury Marine

• 14586

Sears

• 14586

Additional Details:

• Fits: MCM 4.3L, 5.0L, 5.7L & 6.2L MPI engines w/dry joint exhaust & closed cooling

Interchanges/Replaces

Mallory

• 9-43015

Mercruiser Stern Drive

• 864493

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-1508	GLM 85860 Mercruiser Stern Drive 25-807134 25-8071341	1	Thermostat Seal		N/A

Key Features:

• 160°
• Indmar GM and Ford Raw Water Cooled Engines

Additional Details:

• Fits: MCM 496 Mag & HO and MIE 8.1L & HO

Interchanges/Replaces

Indmar

• S985009

Mallory

• 9-43017

Mercruiser Stern Drive

• 863358T
• 8M0074922
• 8M0076464

Additional Details:

• Temperature Rating: 143°F

Use With:

• 18-3672: Thermostat Kit
• 18-3672D: Thermostat Kit (Display Pack)
• 18-43051: Theromstat Cover Kit

Interchanges/Replaces

GLM

• 13010

Mallory

• 9-43019

Mercury Marine

• 62981
• 66850
• 75692
• 75692B

Additional Details:

• Temperature Rating: 140°F
• Fits: MerCruiser 120/2.5L (s/n 2324347 & Up) w/cast iron exhaust manifolds
• Fits: Mercruiser 140-3.0L (s/n 0L340999 & below) and 165

Use With:

• 18-3650: Thermostat Kit
• 18-3650D: Thermostat Kit (Display Pack)

Interchanges/Replaces

Chrysler/Force/US Marine

• F84068
• F84068-1
• F84068-2
• F85068-2

GLM

• 13020

Mallory

• 9-43020

Mercruiser Stern Drive

• 59078
• 59078A1
• 59078B

Additional Details:

• Temperature Rating: 160°

Use With:

• 18-3653: Thermostat Kit
• 18-3653D: Thermostat Kit (Display Pack)

Interchanges/Replaces

GLM

• 13060

Mallory

• 9-43021

OMC Inboard

• 383307

OMC Stern Drive

• 379754
• 383307
• 3852216
• 3856961

Volvo Penta

• 3856961

Additional Details:

• Temperature Rating: 143

Interchanges/Replaces

GLM

• 13150

Johnson/Evinrude Outboard

• 436195

Mallory

• 9-43023

Additional Details:

• Temperature Rating: 143°F (62° C)
• Fits: MCM GM in-line 6 cyl.

Use With:

• 18-3669: Thermostat Kit
• 18-3669D: Thermostat Kit (Display Pack)
• 18-3626: Thermostat Kit

Interchanges/Replaces

Chrysler/Force/US Marine

• F335068

GLM

• 13080

Johnson/Evinrude Outboard

• 382385
• 396987

Mallory

• 9-43024

Mercruiser Stern Drive

• 47594

Volvo Penta

• 21148403

Additional Details:

• Size: 3/4" or 19.1mm
• Temperature Rating: 130° F

Interchanges/Replaces

Chrysler/Force/US Marine

• F97068
• F97068-1
• F97068-2

GLM

• 13200

Mallory

• 9-43025

Mercury Marine

• 895338

Additional Details:

• Temperature Rating: 160°F
• For: Fresh Water Cooling
• Fits: 470/485 models (s/n 6218036 and below)

Use With:

• 18-3652: Thermostat Kit

Interchanges/Replaces

Crusader

• 96358

GLM

• 13050

Mallory

• 9-43000

Mercruiser Stern Drive

• 76270
• 76270T

Additional Details:

• Temperature Rating: 160°F
• Fits: 1998 & newer GM V-6 & V-8 engines with closed cooling

Use With:

• 18-3568: Thermostat Kit
• 18-3667: Thermostat Kit

Interchanges/Replaces

GLM

• 13040

Mallory

• 9-43001
• 9-43016

Mercruiser Stern Drive

• 991551
• 99155A1
• 99155T2

Additional Details:

• Temperature Rating: 160°
• For: Fresh Water Cooling
• Fits: 1987 & newer GM engines with standard cooling requiring a 160° thermostat

Use With:

• 18-2917: Thermostat Gasket
• 18-3644: Thermostat Kit
• 18-3647: Thermostat Kit
• 18-3647D: Thermostat Kit (Display Pack)
• 18-3648: Thermostat Kit
• 18-3648D: Thermostat Kit (Display Pack)

Interchanges/Replaces

Crusader

• 97895

GLM

• 13100

Mallory

• 9-43002

Mercruiser Stern Drive

• 8052732
• 8072522
• 807252T2
• 8M0091470
• 8M0109441

Additional Details:

• Temperature Rating: 130

Interchanges/Replaces

Johnson/Evinrude Outboard

• 5000355
• 5001036

Mallory

• 9-43030