Powered by Mustang Enthusiasts - Call Now (866) 507-3786

Mustang BBK Underdrive Pulleys (Late 01-04) GT/Cobra 4.6 by BBK Mustang Parts

Details   |  Description   |  Reviews
BBK  Mustang Underdrive Pulleys (Late 01-04) GT/Cobra 4.6 1559
  • BBK  Mustang Underdrive Pulleys (Late 01-04) GT/Cobra 4.6 1559
  • BBK  Mustang Underdrive Pulleys (Late 01-04) GT/Cobra 4.6 1559

2001-2004 Mustang underdrive pulleys are easy bolt on horsepower and can be installed with simple hand tools. Pick your set up today from LMR.com!

Item #BBK-1559
MPN# 1559

Everyday Low Price: $199.99

Availability: Low Stock [ ? ]

Add to cart

This product cannot be sold or shipped to the state of California. More Details


  • More Power From Otherwise Stock Motor
  • Estimated 10+ Horsepower Gains
  • Made in USA
  • Installs with simple hand tools


  • Satin or "Clear" Finish Pulleys
  • Billet Aluminum
  • "Piggy Back" Crank pulley

What's in the Box

  • (1) Set of 3 Under Drive Pulleys
  • All Necessary Hardware
Made in the USA

Product Description

BBK Aluminum Underdrive Pulleys
Made from aircraft quality machined steel or aluminum alloy these BBK Mustang under drive front accessory pulley kits are one of the easiest ways to free up an average 8-15 horsepower in under 30 minutes. These Mustang BBK pulley kits are designed as a direct bolt-on replacement for the current Ford factory pulleys and retain full cooling and charging characteristics. Each BBK Mustang underdrive pulley kit is vehicle specific. They are designed and tested at the BBK headquarters in Southern California for maximum performance.

BBK Quality
These underdrive pulley kits are available in a hand-polished aluminum finish or gloss black powder-coated steel. Each Mustang pulley kit comes with complete installation instructions and allow the use of existing serpentine belts.

Identification Guide for 4.6L Water Pump Pulleys
Visually identify which water pump pulley you have before installing regardless of model year. The early water pump pulley
had a convex or ''bowed-out'' face and the pulley on the later water pump has a concave or ''pressed-in face''. There is no
exact changeover date for the pump and pulley. Supposedly the water pump 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,
Refer to the pictures below to determine which pulley design you have. Since there is no definitive answer as to the timeline
or model years.

Product Note
Does NOT include new serpentine belt. YOu Must reuse your original or purchase a new one.

Fitment Note
Due to the difference in diameter from the stock Mustang pulleys, the alternator and charging system may need to be upgraded if you have a large stereo system.

  • Fits 2001-04 4.6L Mustang or Cobra after April 2001 or later design Water pump pulley.

    This product is intended for off-road use only, and is not legal for use in emission restrictive states. Off-Road Disclaimer

    BBK Warranty - Click Here

  • California Residents:
    Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

    Vehicle Applications

    Ford Mustang - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

    About This Brand

    BBK Mustang Parts
    BBK Mustang Parts - Today's Performance
    Since 1988 - BBK has dedicated itself to designing and building cutting-edge high-performance parts and accessories for today's EFI-equipped Mustangs and Ford Lightnings while maintaining the OEM quality levels.

    From their world-famous line of "Power-Plus-Series" performance throttle bodies to their hundreds of "CNC-Series" performance exhaust offerings - the BBK brand is known for delivering unmatched value and quality. Shop BBK for your Mustang headers, exhaust, cold air intakes, and other performance parts!

    Look for Similar Items by Category

    1994-2004 Mustang Parts » 1994-2004 Mustang Engine Parts » 1994-2004 Mustang Accessory Drive » 1994-2004 Mustang Underdrive Pulleys
    Ford Mustang Parts » Ford Mustang Engines & Underhood Accessories » Mustang Accessory Drive » Mustang Pulleys
    1994-2004 Mustang Parts » 1994-2004 Mustang Engine Parts » 1994-2004 Mustang Accessory Drive » 1994-2004 Mustang Harmonic Balancers

    Products by Vehicle