Heavy-Duty Truck Coolant Expansion Tanks (Surge Tanks)

The coolant expansion tank (or surge tank) plays a crucial role in regulating your engine's cooling system pressure and capturing excess coolant volume as your engine heats up. A compromised or cracked tank can lead to pressure loss, system leaks, and catastrophic overheating—problems that quickly sideline a heavy-duty truck.

Don't ignore the early signs of failure like hairline cracks, discolored plastic, or a persistently low coolant level. Replacing a surge tank proactively is cheap insurance against expensive engine damage.

Reliable Replacements for Top Truck Brands

We stock OEM and aftermarket replacement coolant expansion tanks designed to withstand the extreme heat and vibration of commercial trucking applications. Our inventory covers the most common chassis on the road:

• Freightliner: High-quality replacements for Cascadia, Century Class, and Columbia models.

• Kenworth & Peterbilt: Tanks designed for PACCAR and Cummins engine cooling systems.

• International: Durable replacements for ProStar and common vocational trucks.

• Volvo & Mack: Correct-fit surge tanks for modern and older chassis.

Browse our selection of Coolant Expansion Tanks now to ensure your truck's cooling system stays pressurized, leak-free, and ready for any haul.

Shop Coolant Expansion Tanks for All Makes and Models!