Ford Mustang BBK Underdrive Pulleys (96-Mid 01 GT; 96-99 Cobra) by BBK

Mustang BBK Underdrive Pulleys (96-Mid 01 GT; 96-99 Cobra)

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Mustang BBK  Underdrive Pulleys (96-Mid 01 GT; 96-99 Cobra)
  • BBK  Mustang Underdrive Pulleys (96-Mid 01 GT; 96-99 Cobra) 1555
  • BBK  Mustang Underdrive Pulleys (96-Mid 01 GT; 96-99 Cobra) 1555

Mustang underdrive pulleys are easy bolt on horsepower and can be installed with simple hand tools.

Item #BBK-1555

Your Price: $159.99

Market Price:$189.99
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  • More Power from otherwise stock motor
  • 10+ Horsepower in most cases


  • Made in USA
  • Satin or "clear" Finish Pulleys
  • Billet Aluminum
  • Installs with simple hand tools
  • Fits 1996-01 4.6L Mustang or Cobra before April 2001 or early design Water pump pulley(see below)
  • "Piggy Back" crank pulley

What's in the Box

  • (1) Set of 3 (crank, water pump, alternator) under drive pulleys and hardware

Made in the USA

Product Description

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 direct bolt on replacements for the current Ford factory pulleys and retain full cooling and charging characteristics.

Each BBK Mustang under drive pulley kit is vehicle specific. They are designed and tested at the BBK headquarters in Southern California for maximum performance.

These under drive 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.

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

These BBK Mustang underdrive pullies work great on a stock or modified V8 GT or LX Mustang!

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 time line
or model years.

Please visit us at to view a fully photographed installation of this and the many
other BBK products available to help maximize the performance potential of your vehicle.

Product Reviews (1)

out of 5 stars
5 stars
1 reviews
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1 of 1 REVIEWS
1 of 1 REVIEWS

5 Stars   Great Start on your way to more power
By on 6/19/2014
Easy replacement that definitely gives you more seat of the pants power. Definitely recommend this kit as an easy way to start off a project.

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1996 (96) - 1997 (97) - 1998 (98) - 1999 (99) - 2000 (00) - 2001 (01)

About This Brand

BBK - 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!

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