FEL-PRO Engine Coolant Thermostat Case Seal P/N:35739
FEL-PRO 35918 engine coolant thermostat case seal for the 2009-2019 Hyundai Sonata 4-cylinder 2.4L, the 2011-2019 Sonata 4-cylinder 2.0L and other vehicles seals the joint between the thermostat case and the thermostat housing. It meets or exceeds all original equipment specifications.
A cracked thermostat housing, a loose hose connection or a leaking water pump can be behind coolant loss too, so find the cause before buying this seal. A leaking seal can show up as coolant seepage or dried residue at the thermostat housing and a coolant level that keeps dropping. Each engine takes one seal at that joint.
This thermostat case seal also fits the 2011-2020 Kia Sorento 4-cylinder 2.4L, the 2016-2018 Sorento 4-cylinder 2.0L and the 2011-2016 Kia Optima 4-cylinder 2.4L.
Fit and size
Build and materials
Interchange: 256442G000
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
Does the FEL-PRO 35918 thermostat case seal fit the 2011-2020 Kia Sorento 4-cylinder 2.4L?
Yes, FEL-PRO 35918 fits the 2011-2020 Kia Sorento 4-cylinder 2.4L. If your car is a different one, look it up in the "Vehicles it fits" section on this page.
What size is the FEL-PRO 35918 thermostat case seal?
FEL-PRO 35918 measures 25.0 mm inside diameter and 31.5 mm outside diameter, and it is 3.25 mm thick.
Does 256442G000 interchange with this FEL-PRO thermostat case seal?
Yes, 256442G000 is listed as an interchange number for this thermostat case seal, FEL-PRO 35918.
How can I tell if the thermostat case seal is leaking?
With the engine off and cool, look for coolant residue at the thermostat housing. A coolant level that keeps dropping can also point to a leak somewhere in the cooling system, and a shop can pressure-test it.
Is this FEL-PRO thermostat case seal made for imperfect sealing surfaces?
Yes, FEL-PRO gaskets are designed for imperfect sealing surfaces and made with proprietary materials. This seal also has an application-specific design.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.