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Sierra 18-3550 Thermostat Replaces 59078

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List Price: $33.49
Starting At: $23.49
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Sierra 18-3550 Mercruiser 140 Degree Thermostat

Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives and Chrysler/Force/US Marine engines.

  • 140 Degree Temperature Rating
  • 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.

Interchangeable with:

  • Chrysler/Force/US Marine
    • F84068-2
    • F85068-2
    • F84068-1
    • F84068
  • GLM
    • 13020
  • Mallory
    • 9-43020
  • Mercruiser Stern Drive
    • 59078B
    • 59078A1
    • 59078


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