Description The Stewart EMP Performance water pump fills an industry void for a high performance water pump for the 4.6L engine. Also perfect as a cost effective original equipment replacement upgrade, these pumps are available in both long and short versions fitting either of the two or four-valve 4.6 Mustang powerplants. Features/Benefits: Perfect For Stock or Aftermarket Pulleys Increased Water Flow Stainless Steel Impeller Heavy Duty Bearing Long Life Carbon Graphite Seal Requires Less Than 3 Horsepower DOES NOT FIT cars with older style mechanical fan clutches. Will need to upgrade to an electric fan if if you’d like to run this pump Midway through the production run for the 2001 model year Ford changed the design of the water pump on the 4.6L engine. The older style pump produced from 1996 to mid 2001 had a longer shaft. In January of 2001 the design of the pump was changed to a shorter shaft. Make sure you check your vehicle if you are unsure to order the correct pump!
