
Original: $339.00
-65%$339.00
$118.65The Story
For Ford Duratec and Mazda MZR Engines, an underdrive pulley is used to reduce accessory drive belt, water pump, and alternator speeds.
On competition engines, excessive alternator speed wastes power, and water pumps can cavitate at high speed thereby reducing cooling efficiency.
Machined from solid steel and features a corrosion-resistant coating for long service life. The Crankshaft key slot is machined but can also be used
on non-keyed cranks.
- 100mm Belt Pulley
- 146mm OD Trigger wheel
- 36-1 Trigger Configuration
- 3mm Keyway
Ford Duratec 2.0L, 2.3L, 2.5L
Mazda MZR 2.0L, 2.3L, 2.5L
Description
For Ford Duratec and Mazda MZR Engines, an underdrive pulley is used to reduce accessory drive belt, water pump, and alternator speeds.
On competition engines, excessive alternator speed wastes power, and water pumps can cavitate at high speed thereby reducing cooling efficiency.
Machined from solid steel and features a corrosion-resistant coating for long service life. The Crankshaft key slot is machined but can also be used
on non-keyed cranks.
- 100mm Belt Pulley
- 146mm OD Trigger wheel
- 36-1 Trigger Configuration
- 3mm Keyway
Ford Duratec 2.0L, 2.3L, 2.5L
Mazda MZR 2.0L, 2.3L, 2.5L



















