A-Premium Thermostat Housing Assembly for 1.4L Buick/Chevy — Complete Kit with Sensor & O-Ring, Black

The A-Premium Thermostat Housing Assembly is a complete replacement unit—housing, thermostat, sensor and O-ring—designed to restore proper engine temperature control for select 1.4L Buick and Chevrolet models.

If your vehicle is running hot, fluctuating temperature readings, or you notice coolant leaks near the thermostat area, this all-in-one assembly replaces worn components with a factory-style part. Built to meet original-equipment specifications and supplied with a gasket and temperature sensor, this kit is intended for straightforward installation on compatible 1.4L Buick Encore and several Chevrolet models. It helps re-establish reliable coolant flow and accurate temperature feedback to the engine control system.

Which vehicles will this thermostat housing assembly fit?

This A-Premium assembly is engineered for specific 1.4L four-cylinder applications. Verify fitment against your vehicle’s year and engine code before ordering to ensure compatibility.

• Buick Encore: 2013–2019 with L4 1.4L engines.
• Chevrolet Cruze: 2011–2015 L4 1.4L, Cruze Limited 2016 L4 1.4L.
• Chevrolet Sonic: 2012–2019 L4 1.4L.
• Chevrolet Trax: 2013–2019 L4 1.4L.

What components are included and why does that matter?

This is a complete assembly, so you receive the housing, a new thermostat element, the temperature sensor, and the sealing O-ring. Replacing all parts at once reduces the chance of future leaks or sensor faults and simplifies the repair process.

• Housing with three mounting points for secure fitment.
• Thermostat pre-installed to manage coolant flow at the correct temperature range.
• Temperature sensor included to return accurate readings to the vehicle’s ECU.
• O-ring/gasket supplied to ensure a leak-free seal at the coolant junction.

How does this assembly compare with original OE parts?

A-Premium designs this assembly to match the dimensions and function of factory components. It lists common OE reference numbers to help confirm interchangeability, and materials are chosen for durability in typical engine operating conditions.

• Cross-references: 55565336, 55579010, 55593034, 25200455, 902-808, 730221.
• Black finish and robust plastic construction similar to original housings.
• Manufactured to meet OE-style fit and connector locations for plug-and-play installation.

What should I expect during installation and maintenance?

Installation is straightforward for technicians and competent DIYers familiar with cooling-system service. Replace coolant and follow torque specs; inspect nearby hoses and clamps while the system is open to avoid repeat service.

• Disconnect battery and drain coolant to the proper level before removal.
• Unbolt three mounting points, swap the assembly, and ensure the O-ring seats correctly.
• Refill coolant and bleed the system to remove air pockets for accurate temperature control.
• Check for leaks and correct sensor readings after the vehicle reaches operating temperature.

Who is this for: This A-Premium thermostat housing assembly is intended for owners and mechanics who need a full replacement for the thermostat area on compatible 1.4L Buick and Chevrolet models. It suits those who prefer a single, ready-to-install kit that includes the thermostat, sensor and seal instead of sourcing parts separately. If you want a unit built to match OE fitment references and backed by a one-year unlimited-mileage guarantee, this assembly provides a practical aftermarket option.