Freightliner Radiator Surge Tanks

A surge tank is a pressurized component in the cooling system that manages coolant expansion and air bleeding, maintaining consistent pressure during engine operation. A reservoir tank is typically unpressurized and stores excess coolant. On Freightliner trucks, both play critical roles in preventing overheating and maintaining optimal cooling system performance.

Radiator Supply House supplies OEM-equivalent aftermarket surge tanks under the ICEBOX Replacement Parts line, engineered to meet or exceed original equipment specifications. These parts are designed for direct fitment on compatible Freightliner models, offering a cost-effective alternative to dealer-sourced OEM components without compromising quality or performance.

Common signs include visible cracks or leaks in the tank body, coolant loss without an obvious source, overheating warnings, and white residue or staining around the tank fittings. A failing surge tank can compromise the entire cooling system. If you notice these symptoms, inspect the tank immediately and replace it to avoid engine damage.

Yes. Radiator Supply House offers a login-based trade account system that provides fleet operators, repair shops, and truck dealerships with access to wholesale pricing and real-time inventory availability. Contact us to set up a trade account and take advantage of bulk pricing on surge tanks and other Freightliner cooling components.

Yes, you can order directly through radiatorsupplyhouse.com. Trade customers can log in to view pricing and availability before placing an order. Support is also available via WhatsApp chat or Facebook Messenger through the RadiatorSupplyHouse page. For phone assistance, call us at +1 877-615-3002 during business hours, Monday through Friday, 7AM–5PM.

In addition to surge tanks and reservoir tanks, we stock a comprehensive range of Freightliner cooling parts including radiators, charge air coolers, oil coolers, AC condensers, radiator cores, top and bottom tanks, cross flow tanks, mounting brackets, side rails, gaskets, bolt strap kits, U brackets, and washer bars — covering 390 SKUs across 20 product types.