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$10.85
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The Sierra 18-0665-9 Thermostat Gasket is a premium aftermarket replacement gasket designed for Indmar inboard marine engines. Sold in a convenient pack of two, this gasket is engineered to deliver a reliable, leak-free seal at the thermostat housing, helping maintain proper engine cooling system performance.
Designed for use on older-style Indmar thermostat housings from the late 1980s and early 1990s, this gasket is a direct replacement for Ford 302 and 351 CID inboard engines commonly found in Indmar and MasterCraft inboard applications. Each Sierra part meets or exceeds the specifications of the original equipment part it replaces.
Key Features:
Replaces OEM Part Numbers:
Sierra is a trusted name in marine engine parts, offering aftermarket replacements for thousands of marine components. The 18-0665-9 is a straightforward, cost-effective solution for restoring a proper seal during thermostat service or replacement.
We've had to resubmit this order because the first one was cancelled after being requested for additional information to ensure it wasn't a fraudulent order, the information was sent but anyhow the order was cancelled and nobody notified us...
Loris Foti
Fast and easy
Jon R. P
Excellent
Gene M
It was fine.
Franklin M
Quick. Easy. Good price.
Jeremy G
fast and easy
David L Weisz
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