A water pump kit includes everything required to replace the water pump in a vehicle. This usually includes the water pump itself, gaskets, seals and, in some cases, a new pulley or bolts. The gaskets and seals in the kit are just as important as the parts themselves because they must ensure no leaks occur between the water pump and the engine block. To help facilitate the ease of replacement or repair for both professionals and DIYers, water pump kits are designed to include all essential components. Whether replacing due to everyday wear and tear or because of complete failure of the water pump, a water pump kit enables the coolant system to be quickly and easily serviced.