1336551 - Thermostat O-Ring -
$4.12
$5.15
Joint Washer for the radiator cap, part of the engine cooling system.
This sealing washer seats between the radiator cap and the filler neck, maintaining the pressure-tight seal that allows the cooling system to hold its rated operating pressure. A perished or missing washer lets the system lose pressure and coolant, so it is renewed whenever the cap is disturbed.
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