BDFHYK Coolant Thermostat Housing Assembly, Aluminum

Highlights

When an existing thermostat housing needs replacement, matching the part to the vehicle and engine matters as much as the housing material. This BDFHYK coolant thermostat housing assembly is listed for select Buick and Chevrolet models with a 1.4L L4 engine, and it replaces several specified OE part numbers.

Its job is to help regulate engine temperature by controlling coolant flow through the radiator. The housing is made from aluminum alloy, the listing describes this as an upgrade over traditional plastic housings intended to reduce the risk of cracking. On the spec sheet, that is the main reason to consider it over a like-for-like plastic replacement, though it does not establish how the part will perform in a particular vehicle.

A solid pick if your vehicle and OE number match the listed applications and you’re replacing this specific assembly. Not the best choice if you need a thermostat part for a different engine or want to select a replacement by vehicle name alone. The listed fitment is narrow enough that confirming the engine and part number before ordering is important.

Size & fit

The stated engine fitment is 1.4L L4. The listed applications are Buick Encore model years 2013–2021, Chevrolet Sonic 2012–2020, Chevrolet Cruze 2011–2015, Cruze Limited 2016, and Chevrolet Trax 2013–2021. These ranges are not a substitute for checking the exact vehicle configuration: the product information specifically advises confirming fitment by OE number or detailed model and submodel information.

The replacement references provided are 25200455, 55565336, 55579010, 55593034, and 902-808. If you’re comparing this assembly with a generic housing, the practical difference here is the stated aluminum-alloy construction and the explicit application list—not evidence that it fits every version of the named models. Ten en cuenta que a model-year match alone may not confirm compatibility if the engine or submodel differs.

Tips for day-to-day use

For a repair decision, start with the vehicle’s engine and the number on the existing part, then compare both with the listed references. For example, if you’re preparing to replace a housing on a listed Cruze, checking the OE number before beginning the repair can help avoid choosing a part based only on the Cruze name. The housing’s role is to manage coolant flow as the engine warms, so it is a functional cooling-system component rather than a cosmetic upgrade.

The aluminum construction may appeal if you are specifically looking to move away from a traditional plastic housing. Still, the product information does not give dimensions, installation steps, included hardware, or a complete service procedure. Those details should not be assumed from the material or fitment list, use the vehicle’s repair information to determine what the replacement job requires.

Practical doubts

What does the thermostat housing assembly do? It houses the thermostat assembly that controls coolant flow through the radiator according to engine temperature, helping regulate operating temperature.

Which OE numbers does it replace? The listed references are 25200455, 55565336, 55579010, 55593034, and 902-808. Match the number to your vehicle before choosing it.

Is it listed for every Buick Encore or Chevrolet Cruze? No. The stated applications specify model years and a 1.4L L4 engine, with Cruze Limited listed separately for 2016. Check the exact engine, submodel, and OE number.

Final verdict

This assembly makes sense when the listed aluminum housing and replacement references line up with the vehicle you’re repairing. Its clearest distinction is the aluminum-alloy construction, presented as a sturdier alternative to traditional plastic, the listing does not provide independent durability results or installation details. If the engine or OE number is uncertain, identify the existing part first rather than relying on the model badge. That extra fitment check is the deciding step between a plausible match and an avoidable mismatch.