Mustang 1987-1993 Engine Pulley Kit: 5.0L Serpentine Belt Horsepower
Part Number: M-8509-A50
A/C and power steering. (E.0. #D-308).
Contains steel crankshaft, water pump and alternator pulleys, plus bolts and installation instructions. Reduces accessory drive RPM by: (water pump - 14%) and (alternator - 22%) and significantly improves performance! Pulleys are manufactured on state-of-the-art CNC machines and have an awesome blue finish over zinc plating. Pulleys use production serpentine belt.
Engine cooling will be reduced.
Not legal for sale or use on pollution-controlled motorehicles.