Restore a leak-free coolant path with the SKP Engine Coolant Filler Neck / Thermostat Housing (SK902308), an OE-style upper replacement that drops into the 2001-2010 Chrysler PT Cruiser. This part is cataloged under both names — filler neck and thermostat housing — so it may appear either way in product listings.
Mounted in the upper position of the cooling system, it houses the thermostat and provides the coolant passage plus the filler neck opening where the pressure cap seats. Over time the original can crack, warp, or leak at its sealing surface; if a failed housing is the source of coolant seepage or overheating, this replaces it.
Fitment: 2001-2010 Chrysler PT Cruiser. See the "Vehicles it fits" section for engine-specific coverage.
Interchange: 5278203AA · 5278203AB · 902308 · CH5332
This part cross-references / interchanges with the following part numbers:
What does this part do?
It serves as the upper coolant filler neck and thermostat housing — routing engine coolant, locating the thermostat, and providing the opening where the pressure cap seats.
What vehicles does it fit?
It's a direct-fit replacement for the 2001-2010 Chrysler PT Cruiser. Check the "Vehicles it fits" section for engine-specific coverage.
Why is it listed under two names?
The part is cataloged as both an Engine Coolant Filler Neck and an Engine Coolant Thermostat Housing, so it may appear under either name in listings.
What are the signs it may need replacing?
Coolant leaks around the housing, visible cracks or warping, low coolant, or overheating can point to a failed housing. Diagnose the cause before replacing.
What numbers does it interchange with?
It cross-references 5278203AA, 5278203AB, 902308, and CH5332.
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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.
