Description
Sierra 18-3646 marine thermostat kit. 140 degrees. Fits: 1982 & older Ford & GM V-8 engines w/standard cooling & 1996 & older hi-performance models, Fits: engines with closed cooling. Replaces: GLM 13380, Mallory 9-43151, Mercruiser Stern Drive 807252Q3, 807252T6.
About SierraSierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
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