20579604 Volvo Trucks EXPANSION TANK

This thing holds extra coolant for your engine. Coolant, as you probably know, circulates through the engine to keep it from overheating. As the engine heats up, that coolant expands—that’s just physics. The expansion tank gives that expanded coolant somewhere to go, prevents pressure building up in the system. It also provides coolant back into the radiator as the engine cools down and the fluid contracts. Essentially it manages the volume changes in your cooling system. It’s part of the cooling system, specifically connected to the radiator usually through a hose. It's a sealed unit, meaning it holds pressure. It doesn’t make the coolant circulate—the water pump does that—but it's a critical piece in maintaining the proper coolant level and pressure. Think of it as a safety valve and a reservoir all in one. It works with the radiator cap to keep everything at the right pressure. If the expansion tank fails, you can run into a lot of trouble. A cracked or leaking tank means you're losing coolant, and that leads to overheating, which can cause serious engine damage. You’ll notice if it's failing—you might see coolant leaking, or the engine temperature gauge creeping up. It acts like a shield against pressure build – up, so if that shield goes, things get risky fast. Ignoring it can lead to a blown head gasket or worse. You can find a replacement pretty easily, places like Fixparts Online usually have a good selection, and it’s often something a reasonably handy person can replace themselves. Stand out from the crowd: Expansion Tank (MPN 20579604) has a 12-month warranty!

About Volvo Trucks

Volvo Trucks is a leading Swedish brand renowned for its safe, efficient, and durable commercial vehicles. Originating from Sweden, Volvo Trucks continuously integrates advanced technology with driver-focused design to deliver superior transport solutions.

Why Choose Volvo Trucks?

• Get parts built specifically for your Volvo truck – they’re designed to fit and work together perfectly for top performance. • Extend the life of your truck and keep it running smoothly with high-quality, durable parts. • Reduce downtime and get back on the road faster with reliable parts and a wide network of support. • Protect your investment with genuine Volvo parts, ensuring your truck holds its value longer. Drive with confidence – choose Volvo Trucks parts at FixParts Online.