The water pump is an indispensable component of the engine cooling system, and so is the coolant tank. But it has been found that the water pump often fails after a certain mileage and the coolant was found to be leaking from the shaft seal behind the pulley each time the engine is running. Replacing the pump, the thermostat housing, hoses and belts will not address this problem, because then, a new problem occurs, which is the fact that the coolant will slowly creep from the bottom of the coolant tank where the sensor is situated. The coolant then flows through the wires that are directed away from the sensor and eventually drips into the underbody pan and to the ground. The solution to this particular car trouble is to get a Chevy expansion tank replacement. The expansion tank which is usually made of plastic is sealed with the top and bottom portions fused together. This construction makes the expansion tank impossible to repair or even inspect. Four fittings are employed in the expansion tank, one for the top of the tank or the filler cap, one for the main inlet or outlet hose, one for the coolant overflow hose which is positioned at the top of the tank, and one snap connector for the sensor located at the bottom of the tank. The fittings designed for the hose include brass inserts inside the hose barbs to prevent the hose clamps from destroying the barbs which is in general, a good construction design. Looking after the welfare of the engine cooling system will pay off once you already experience the continuous comfortable and safe ride. If you need a Chevy expansion tank replacement, simply log on to our website and place your order for a ride that is free from an engine overheat.