Thermostat Housings & Water Necks

At JEGS, we offer a variety of thermostat housings and water necks for small block Chevy (SBC) engines. These components play a crucial role in regulating the engine's operating temperature and ensuring efficient cooling performance. Whether you need to replace a worn-out water neck or want to upgrade to a high-quality thermostat housing, we have the right parts to meet your needs.

A water neck, also known as a thermostat housing, is a crucial component in the engine's cooling system. It is typically mounted on the intake manifold and connects the engine's coolant passages to the radiator. The water neck houses the thermostat, which controls the flow of coolant and regulates the engine's operating temperature. When the engine is cold, the thermostat remains closed, preventing coolant from flowing to the radiator. As the engine warms up, the thermostat opens, allowing coolant to circulate and maintain the optimal operating temperature. Proper functioning of the water neck is essential for preventing overheating and ensuring your engine runs at its best.

Thermostat housings can wear out over time due to constant exposure to heat and coolant. Common signs that it's time to replace your thermostat housing include coolant leaks, visible cracks or damage on the housing, and issues with the thermostat not opening or closing properly. If you notice any of these signs or experience engine overheating, it's essential to inspect and replace the thermostat housing promptly. Upgrading to a high-quality water neck made from durable materials can also provide better longevity and performance for your cooling system.

The cost of replacing a coolant housing, including the water neck and thermostat, can vary depending on the brand and material. Basic thermostat housings made of cast aluminum or stamped steel can range from $15 to $50. Performance-oriented water necks made of high-quality aluminum or other materials can cost between $50 to $100 or more. It's crucial to choose a water neck that fits your engine's specifications and offers reliable performance. Investing in a durable and efficient thermostat housing ensures proper engine cooling and contributes to the overall longevity and reliability of your vehicle's cooling system.