SIERRA Johnson / Evinrude Thermostat, Replaces 435491 – 18-3544

Description

SIERRA Johnson / Evinrude Thermostat, Replaces 435491 – 18-3544

Sierra 18-3544 is a Engine thermostat engineered for the specified marine application. Johnson/Evinrude outboard cooling systems using OMC/BRP thermostat 0435491 / 435491.

• Replacement engine thermostat for compatible Johnson/Evinrude outboards.
• Direct interchange for OMC/BRP 0435491 / 435491.
• Controls coolant/raw-water flow through the engine according to the thermostat calibration specified by the original application.
• No temperature rating is asserted here because the verified supplier listing identifies the rating as application dependent / not stated.
• Inspect the thermostat seat, housing gasket and cooling passages for salt or scale buildup during replacement.

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: 18-3544
• Part Type: Engine thermostat
• Application: Johnson/Evinrude outboard cooling systems using OMC/BRP thermostat 0435491 / 435491.
• OEM Reference: 0435491 / 435491
• Temperature Rating: Use OEM application specification

Interchange / OEM References

• Johnson/Evinrude Outboard: 0435491, 435491