What should be replaced along with the new water pump?

Replacing the gasket along with a new water pump is crucial because the gasket is responsible for creating a proper seal between the water pump and the engine. Over time, gaskets can become worn, cracked, or degraded, leading to potential leaks when a new water pump is installed. If the old gasket is reused, it may not provide an adequate seal, which could lead to coolant leaks and subsequent overheating of the engine.

By replacing the gasket, you ensure a reliable and leak-free installation of the new water pump, thus maintaining the engine's cooling system integrity and preventing future problems associated with coolant loss.