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New in BOX March Performance # 2255 3pc Underdrive Pulley Set for 1999 - 2005 Mustang GT 4.6L. This set fits only with "LONG WATER PUMP see picture". Aluminum Sets are machined from the same high strength 6061-T6 billet aluminum as our Deluxe set above but have a machined aluminum finish with no powder coating. Unlike some of our competitors bargain pulleys you still get a durable hard coating on the crank pulley that prevents oil seal leaks and on the water pump pulleys that prevents premature wear.March Performance Ford 4.6 Aluminum Pulley Sets increases horsepower by reducing accessory drag. 12.5 h.p. at rear wheels is typical. Eliminates belt throwing. Designed for normal street driving. CHECK OUT OUR FACEBOOK PAGE FOR MORE SPECIALS AND VIDEOS.
• Machined from 6061-T6 billet aluminum for extra strength.
• Covered with protective black powdercoat.
• Hard coating on the crank pulley to prevents oil seal leaks and on the water pump pulleys that prevents premature wear.
Ford 1999-00 Mustang GT 4.6L (Early Design)
Identification Guide for 4.6L Water Pump Pulley's
You should visually identify which pulley/pump you have before ordering regardless of model year! Mid-way through the production run for the 2000 model year Ford changed the design of the water pump on the 4.6L engine however the change is apparently based on the origin of the engine and is not specific the model year. The early style pump had a longer shaft. The later design of the pump was changed to a shorter shaft. This necessitated a change in the design of the pump pulley. Read on. The early water pump pulley had a convex or ''bowed-out'' face and the later design has a concave or ''pressed-in face''. There is no exact changeover date for the pump and pulley. It is important to visually inspect your car to see which design you have. Supposedly the changeover occurred in January of 2000, but we have seen cars with identical January build dates and different water pumps and pulleys. We have also seen the early design pulleys used on a few 2002 models, so be sure to check your vehicle before ordering. Emai or call Action Performance (631) 737-7100