This thermostat repair kit fits Mercruiser 3.7L 3.7LX 165 170 180 190 470 485 488 2/4 BBL., MCM 496 Mag & HO and MIE 8.1L & HO out drives Temperature Rating: 160°F Replacement for Mercruiser 991551, 99155A1, 99155T2, 76270, 76270T, 863358001, 863358T, 8M0074922, 8M0076464, 8M0192249 Also compatible with GLM 13040, 13420, 13050, Mallory 9-43001, 9-43016, 9-43000, 9-43017 and Sierra 18-3555, 18-3667, 18-3552, 18-43017 Kit Includes: 1 pc thermostat 991551, 1 pc thermostat housing gasket 530451 and 1 pc thermostat seal 8071341

APPLICATION:

Fits MerCruiser Sterndrives:

165 2 BBL. 0B434941-0B774251

170 2 BBL. 06916779-0B434940

180 4 BBL. 0B436391-0B775248

190 4 BBL. 06916779-0B436390

470 2 BBL. 06218037-06916778

470/485 Models 06218036 & Below

488 4 BBL. 06170297-06916778

3.7L 2 BBL. 0B774252-UP

3.7LX 4 BBL. 0B775249-UP

MCM 496 Mag & HO

MIE 8.1L & HO

Thermostat Service Kit Part Number:

Mercruiser 991551, 99155A1, 99155T2, 76270, 76270T, 863358001, 863358T, 8M0074922, 8M0076464, 8M0192249

GLM 13040, 13420, 13050

Mallory 9-43001, 9-43016, 9-43000, 9-43017

Sierra 18-3555, 18-3667, 18-3552, 18-43017

Package Contains:

1X Thermostat 991551

1X Thermostat Housing Gasket 530451

1X Thermostat Seal 8071341

With Install Instructions