A-Premium Thermostat Housing Assembly for Buick/Chevrolet 1.4L — Aluminum, 105°C Thermostat, Gasket Included

The A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly is a direct-fit replacement that houses the 105°C thermostat and sensor to regulate coolant flow for select Buick and Chevrolet 1.4L engines.

This replacement thermostat housing assembly combines an aluminum body with rubber seals and an integrated sensor to restore proper cooling-system function. Designed as a direct replacement for several Buick Encore and Chevrolet models with 1.4L engines, it arrives boxed with a gasket and is engineered to match OEM fit and function. The part is built to withstand hardness and crushing tests and carries reference numbers commonly used by technicians for cross-referencing.

Which vehicles will this thermostat housing assembly fit?

This assembly fits a range of GM compact models that use the 1.4L L4 engine. Check your VIN and part cross-references to confirm compatibility before ordering.

• Buick Encore: 2013–2016, 2017 (VIN B), 2018–2021 with 1.4L L4
• Chevrolet Cruze: 2011–2016 L4 1.4L and Cruze Limited 2016 1.4L
• Chevrolet Sonic: 2012–2020 with 1.4L L4
• Chevrolet Trax: 2013–2021 with 1.4L L4

How does the A-Premium housing help engine cooling performance?

The housing secures the thermostat at its specified start-to-open temperature (105°C) and routes coolant through the engine as designed. A solid aluminum body resists warping, while included rubber gaskets maintain a reliable seal to prevent leaks.

• 105°C start-to-open thermostat setting for consistent temperature control
• Aluminum construction to resist heat-related distortion
• Rubber seals and included gasket to reduce leak risk
• Integrated sensor for coolant temperature monitoring

Is this housing an exact replacement and what numbers should I check?

Yes — this A-Premium assembly is sold as a direct replacement designed to match OEM mounting points and hose connections. Use the listed reference numbers to verify fitment with parts catalogs or your mechanic.

• Common reference numbers: 55565336, 902-808, 902808
• Additional cross-refs: 55579010, 55593034, 28290034
• Manufacturer part IDs: 730221, 730-221
• Check vehicle VIN and engine code to confirm compatibility

What comes in the box and what warranty coverage is included?

The assembly ships boxed complete with the thermostat housing, gasket/seal and a pre-installed sensor where applicable. A-Premium backs this unit with a one-year unlimited-mileage guarantee to cover manufacturing defects under normal use.

• Boxed assembly with gasket and seal included
• Pre-installed coolant temperature sensor for plug-and-play replacement
• One-year unlimited-mileage limited guarantee from A-Premium
• Designed to meet durability tests for hardness and crush resistance

Who is this for: The A-Premium Upgraded Aluminum Engine Coolant Thermostat Housing Assembly is intended for DIY mechanics and professional technicians replacing a failed or leaking thermostat housing on compatible Buick and Chevrolet 1.4L vehicles. It's also suited for owners looking to restore proper engine temperature control using a direct-fit component with an integrated sensor and OEM-style fitment. Always confirm fitment with your vehicle's VIN, and replace leaking or damaged housings promptly to avoid overheating or coolant loss.