Radiator Coolant Overflow Tank Reservoir Mack & Volvo (2008-2018)

Direct-Fit Radiator Coolant Overflow Tank Reservoir for 2008-2018 Volvo, Mack V Series

What it Does: Replaces a cracked or leaking factory coolant reservoir to restore proper heavy-duty engine thermal management and prevent catastrophic coolant loss on the road.

The Stock V Series Coolant Reservoir Weakness

Heavy-duty trucks like the Volvo VNL and Mack Pinnacle operate under extreme thermal loads and constant low-frequency vibrations from large-displacement D13 or MP8 engines. Over hundreds of thousands of miles, the factory OEM plastic expansion tank undergoes severe thermal cycling. The constant shift from ambient cold to operating temperatures near 200°F breaks down the plastic's polymer chains. This degradation manifests as micro-cracking along the tank seams and mounting points, eventually leading to pressurization failures, coolant loss, and the risk of catastrophic engine overheating during high-load freight operations.

The Engineering Solution

This aftermarket replacement expansion tank is engineered to match factory specifications for 2008-2018 Volvo and Mack applications. Manufactured from premium high-density polyethylene (HDPE), it resists long-term thermal breakdown and heavy-duty diesel vibration. The tank features reinforced structural seams to handle the extreme pressure of an HD cooling system without expanding or bursting under load. It includes a pre-calibrated pressure relief cap to ensure exact system pressurization, maintaining optimal boiling points for the coolant mixture. With precise molded mounting brackets, installation is straightforward, reliably restoring your rig's cooling system.

Technical Specifications

Compatibility

• 2008-2018 Mack CHU
• 2008 Mack CXN
• 2008-2018 Mack CXU
• 2011-2015 Volvo VHD
• 2008-2018 Volvo VNL
• 2008-2018 Volvo VNM

The Volvo, Mack Heavy-Duty Standard

When pulling heavy freight across the country, cooling system reliability is non-negotiable. This premium aftermarket coolant reservoir ensures your rig maintains proper operating temperatures, offering the durability required for cross-country hauling and heavy-duty towing without downtime.