When it comes to replacing the thermostat housing in an Alfa Romeo, there are several options available on the market. Various manufacturers offer replacement thermostats and components designed to meet the OEM specifications and provide a reliable solution for Alfa Romeo owners. Some notable brands in the market include iD Select, Gates, MotoRad, Beck Arnley, Mopar, and DIY Solutions.

iD Select offers engine coolant thermostats and failsafe engine coolant thermostats as direct OEM replacements. These products are built to OEM specifications and ensure the same fit, form, and function as the original factory part. They are designed to deliver excellent quality, reliability, and value.

Gates provides engine coolant OE type thermostats and premium thermostats. Their thermostats are developed with meticulous attention to detail and manufactured from high-quality materials. Gates emphasizes the importance of quality control and factory calibration to ensure the accuracy of opening and closing, regardless of pressure changes. Their premium thermostats are known for their great design, function, and durability.

MotoRad offers engine coolant thermostats that are designed to provide precise pressure control and ensure the proper fit. These thermostats undergo state-of-the-art equipment, strict quality control, and functional testing to ensure high-quality performance and reliability.

Beck Arnley has been a trusted provider of OE quality parts for vehicles for over a hundred years. They offer engine coolant thermostats that meet OE quality standards. Their products are made from top-quality materials and are known for their reliability and durability.

Mopar, a renowned brand in the automotive industry, provides engine coolant thermostats and cooling thermostat kits. Their thermostats are carefully crafted from premium materials and offer excellent corrosion and wear resistance. Mopar products are specifically designed to maintain engine efficiency and performance.

DIY Solutions offers an engine coolant thermostat kit that is designed to help restore vehicles to their former glory. The kit provides a quick replacement solution for Alfa Romeo owners looking to bring their vehicles back to optimal condition. The focus is on quality and ensuring customer satisfaction.

It is important to select the appropriate thermostat housing for your specific Alfa Romeo model and engine variant. Compatibility and fitment should be confirmed to ensure proper installation and optimal performance. Consulting with a qualified mechanic or referring to the vehicle's service manual can help in identifying the correct thermostat housing for your Alfa Romeo.

In addition to the information obtained from the internet, it is worth noting that the thermostat housing mentioned in another online discussion forum specifically relates to the Alfa Romeo 164 model. The discussion indicates that the housing provided in the forum is not suitable for a 164 engine in a 164 chassis. Therefore, it is essential to ensure the compatibility of the thermostat housing with the specific Alfa Romeo model and engine configuration.

In summary, the Alfa Romeo thermostat housing is a critical component of the cooling system. Several reputable manufacturers offer replacement thermostats and components designed to meet OEM specifications. It is crucial to choose a compatible housing for your Alfa Romeo model and engine variant to ensure proper fitment and optimal performance. Consulting with a professional or referring to the vehicle's service manual can help in selecting the appropriate thermostat housing for your specific Alfa Romeo model.