The water pump helps keep your Toyota’s engine temperature in check by circulating coolant through the radiator, engine block and cylinder head(s). It’s a critical component that is key to reliable engine operation. So when a replacement is necessary, make sure you specify a Genuine Toyota water pump. Unlike an auto parts store replacement, a Genuine Toyota water pump is all-new and built to the same exacting specifications as the original part. That means it will fit right the first time and provide years of trouble-free service.