Engine Coolant Expansion Reservoir for Heavy‑Duty 4x4 ❄️

Why your vehicle needs it

This high-grade overflow bottle keeps your Land Cruiser’s cooling system stable under city, towing, and off-road loads. As coolant heats up it expands; the reservoir catches the extra volume and stores clean fluid for the return cycle when the engine cools. That means steady pressure, fewer air pockets, and a reliable operating temperature.

How it works

Connected by a hose to the radiator neck and cap, the tank accepts excess coolant at pressure. When vacuum forms during cool-down, fluid flows back, guided by the cap valve. Clear MIN/MAX marks let you check level at a glance, and the molded plastic resists heat, vibration, and chemicals for long life.

What happens if it’s broken ⚠️

Cracks, cloudy plastic, a loose cap, or a leaking hose cause low coolant, sweet odor, white residue, weak cabin heat, and rising temperature. Ignoring it can lead to boil-over, warped cylinder head, damaged head gasket, and costly engine repair.

Tech tips ✅

Install with a fresh hose and cap, fill with the correct premix, bleed air, and recheck the level after the first heat cycle. Replace at the first sign of brittleness or staining to protect the radiator, water pump, and thermostat.

Compatibility

• Land Cruiser