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Mountune USA

Underdrive Crankshaft Pulley Ford Duratec 164mm Trigger

Underdrive Crankshaft Pulley Ford Duratec 164mm Trigger


Regular price $279.00
Regular price $279.00 Sale price $279.00
Sale Sold out

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
  • 164mm 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

Return Policy

You have 7 calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be sealed in the original packaging. Your item needs to have a receipt or proof of purchase. Some exclusions apply.

For additional details see our Return & Refund Policy.

Installation Guides

To see all available installation and break-in instructions, click here.

Disclaimers & Legal

This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards.

Click Here for emissions compliance information.

California Residents Prop 65 Information
California’s Proposition 65 entitles California consumers to special warnings for products that contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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