Expansion Tanks

Expansion Tanks – Coolant Reservoirs for Stable Engine Pressure

The expansion tank (also known as the coolant reservoir) plays a vital role in your vehicle’s cooling system — absorbing pressure changes as the coolant heats and expands. A cracked or leaking tank can cause coolant loss, air pockets, and overheating that may lead to serious engine or head gasket damage.

Our expansion tanks are built to OEM specification for perfect fitment, correct pressure balance and long-term durability. Each unit is made from heat-resistant, high-grade plastic or composite material, designed for South African heat and heavy traffic conditions.

Why Choose Our Expansion Tanks

• OEM-Spec Fitment – Direct replacement for the original coolant reservoir
• Prevents Coolant Loss – Maintains correct pressure and coolant levels
• Durable Construction – Heat and chemical resistant for long service life
• Ensures Cooling Efficiency – Keeps system sealed and air-free
• Trusted Nationwide Since 2011 – Quality-tested, fast delivery and local support

Replace a damaged or discoloured expansion tank before it fails — protect your engine and keep your cooling system pressure-balanced.

For expert insight on how expansion tanks, radiators and water pumps work together to prevent overheating, read our detailed article: Why Cars Overheat in South Africa – Cooling System Failures, Head Gasket Damage & How to Prevent It .