Modifying your Mustang's engine for more power can take its toll on the stock factory water pump, so upgrade to a High Flow Performance Water Pump to keep your Pony running cool. AmericanMuscle offers Performance Water Pumps & Cooling Accessories for the 281, 289, 302, and 351 V8's in both short and long styles to fit your Mustang's needs. A new water pump is only the first step in keeping your Mustang running cool and is part of your suggested scheduled maintenance. You'll also need a new Mustang Radiator.