Engine Coolant Thermostat Housing For Toyota Echo Yaris Scion Xa Xb 1.5L 4Cyl
Routine inspection reveals that the engine coolant thermostat housing is a frequent failure point in compact vehicles, often leading to external leaks and overheating due to cracked plastic connections or failed seals. This Engine Coolant Thermostat Housing provides a direct, factory-style replacement engineered to resolve these specific issues. Constructed from a robust blend of plastic and aluminum, this unit restores structural integrity to the cooling system while resisting heat warping and chemical degradation, ensuring your engine returns to optimal operating temperature quickly and stays there.
Exact Compatibility Matching
To prevent fitment errors, verify your vehicle details against the list below and cross-check the part number marked on your original component. This housing is designed exclusively for the following 1.5L 4-cylinder configurations:
- Scion xA: 2004 – 2006, 4 Cylinder, 1.5L
- Scion xB: 2004 – 2006, 4 Cylinder, 1.5L
- Toyota Echo: 2000 – 2005, 4 Cylinder, 1.5L
- Toyota Yaris: 2006 – 2018, RS and STD variants, 4 Cylinder, 1.5L
Note: Compatibility figures serve as reference guides only. Failure to match the part number exactly may result in improper sealing or mounting issues.
Key Technical Specifications
- Brand: Hongwin
- Condition: Brand New
- Origin: Mainland China
- Material Build: Plastic / Aluminum composite
- Sealing Technology: Hermetically sealed construction prevents internal leakage and ensures high-accuracy fitment.
- Cross-Reference Numbers: 34185, 179124, 902-5103, 16321-21020, 1632121020
- Naming Convention: Engine Coolant Thermostat Housing
Practical Installation Insights
- Surface Preparation: Before mounting the new housing, thoroughly clean the engine block mating surface. Remove all traces of old gasket material or corrosion to ensure a perfect seal against the aluminum/plastic interface.
- Gasket Alignment: Position the replacement gasket carefully before bolting the housing down. Tighten fasteners gradually in a star pattern to avoid stress concentration that could crack the plastic components.
- System Bleeding: After installation, run the engine with the radiator cap off to vent trapped air pockets. Proper bleeding prevents false overheating readings caused by air locks in the cooling circuit.
Package includes:
- One (1) Engine Coolant Thermostat Housing assembly
Safety and Verification Reminders
- Mandatory Comparison: Do not rely solely on vehicle year and model tables. Visually compare the bolt pattern and port locations of your original part with this item. If the dimensions differ, this replacement is unsuitable for your vehicle.
- Proper Disposal: Dispose of the removed old thermostat housing according to local environmental regulations for automotive waste recycling.
