Description
SIERRA MerCruiser GM V6/V8 Closed-Cooling Thermostat Kit, 160°F – 18-3568
Sierra 18-3568 is a Thermostat kit engineered for the specified marine application. 1998-and-newer MerCruiser GM V6/V8 marine engines with closed cooling where a 160°F thermostat kit is specified.
- 160°F thermostat kit for selected MerCruiser GM V6/V8 closed-cooling installations.
- Catalog application begins with 1998-and-newer engine families and includes selected 5.7L, 6.2L, 7.4L/454 and 8.2L/502 packages.
- Kit format supplies the thermostat and related service pieces specified for the application.
- Maintains the designed closed-cooling operating-temperature regulation when the cooling system is functioning correctly.
- Confirm engine serial number and cooling-system configuration; raw-water-cooled versions can require a different thermostat/calibration.
Fitment for marine engine and drive service parts can vary by model, serial number, gearcase, cooling configuration and prior component supersessions. Compare the original OEM number and physical configuration before installation, and renew related seals, locking hardware or adjacent wear items when their condition requires it.
Specifications
- Manufacturer: Sierra
- Part Number: 18-3568
- Part Type: Thermostat kit
- Application: 1998-and-newer MerCruiser GM V6/V8 marine engines with closed cooling where a 160°F thermostat kit is specified.
- Opening Rating: 160°F (71°C)
- Cooling System: Closed cooling
- Application: GM V6/V8, application dependent
Interchange / OEM References
- Mercruiser Stern Drive: 99155T1

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