In the accessory drive system, the crankshaft drives the water pump, alternator, power steering pump, A/C compressor and other accessories via an arrangement of pulleys mounted to each component and one or more drive belts. While the amount varies according to vehicle, all accessories use up horsepower – power that could be applied to your drive wheels. But there are ways to reduce your accessories’ power consumption without negatively affecting function.

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    • (0 reviews)
      # sp81402
      Powercharger Upgrade Kit by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It...
      Made with precision and quality in mindBuilt to last
      $933.95
    • (0 reviews)
      # sp103965
      Tensioner Upgrade Kit by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $253.87 - $259.87
    • (0 reviews)
      # sp85349
      Electric Water Pump Style Track Alternator Serpentine All Inclusive Kit by March Performance®. This newly Styled serpentine drive Kit from March Performance is specially designed to address the problem of driving the alternator A/C and...
      High quality at an affordable priceExpertly made from premium materials
      $1,940.68 - $2,356.10
    • (0 reviews)
      # sp85370
      Long Water Pump Billet Kit Billet Alternator Serpentine All Inclusive Kit by March Performance®. Introducing the March Performance Chevy Small Block Long Water Pump All Inclusive Kit with Billet Accessories. Optional canister Style...
      High quality at an affordable priceExpertly made from premium materials
      $1,353.27 - $1,926.82
    • (0 reviews)
      # sp85375
      Long Water Pump Extra High Mid-Mount Kit Alternator Serpentine All Inclusive Kit by March Performance®. Introducing the March Performance Chevy Big Block Long Water Pump Extra High Mid-Mount All Inclusive Kit. Featuring a new higher...
      High quality at an affordable priceExpertly made from premium materials
      $1,176.21 - $2,009.47
    • (0 reviews)
      # sp85376
      Long Water Pump Extra High Mid-Mount Ultra Alternator Serpentine Pulley and Bracket Kit by March Performance®. Introducing the March Performance Chevy Big Block Long Water Pump Extra High Mid-Mount Ultra Pulley and Bracket Kit....
      High quality at an affordable priceExpertly made from premium materials
      $450.19 - $918.54
    • (0 reviews)
      # sp85377
      Long Water Pump High Water Flow Ratio 6 and 6-Rib Serpentine Crank Pulley by March Performance®. 6&6-Rib Aluminum Serpentine High Water Flow Ratio Crank Pulley with Long Water Pump. Designed to Replace Factory V-belt or Steel...
      High quality at an affordable priceExpertly made from premium materials
      $125.91
    • (0 reviews)
      # sp85380
      Long Water Pump High Water Flow Ratio 6and6-Rib Serpentine Crank Pulley by March Performance®. 6&6-Rib Aluminum Serpentine High Water Flow Ratio Crank Pulley for Chevy Small Blocks with Long Water Pump. Designed to Replace Factory...
      High quality at an affordable priceExpertly made from premium materials
      $125.91
    • (0 reviews)
      # sp85383
      Long Water Pump High Water Flow Ratio Groove V-Belt Pulley Kit by March Performance®. Aluminum Groove High Water Flow Ratio V-Belt Pulley Kit for Chevy Big Blocks with Long Water Pump. Designed to Replace Factory V-belt or Steel...
      High quality at an affordable priceExpertly made from premium materials
      $264.86 - $285.53
    • (0 reviews)
      # sp85459
      Revolver Billet Alternator Serpentine All Inclusive Kit by March Performance®. Like March Performance other Revolver this Kits makes use of a unique easy to use belt tension adjustment tool. Once the belt tension has been set, the...
      High quality at an affordable priceExpertly made from premium materials
      $1,910.19 - $2,534.72
    • (0 reviews)
      # sp85489
      Short Water Pump Inward Mount Deluxe Alternator Serpentine Pulley and Bracket Kit by March Performance®. Introducing the March Performance Chevy Big Block Short Water Pump Inward Mount Deluxe Serpentine Pulley and Bracket Kit. These...
      High quality at an affordable priceExpertly made from premium materials
      $576.80 - $773.72
    • (0 reviews)
      # sp85491
      Short Water Pump Inward Mount Ultra Alternator Serpentine Pulley and Bracket Kit by March Performance®. Introducing the March Performance Chevy Big Block Short Water Pump Inward Mount Ultra Serpentine Pulley and Bracket Kit. These...
      High quality at an affordable priceExpertly made from premium materials
      $656.14 - $928.95
    • (0 reviews)
      # sp85511
      Short Water Pump Wide Mount Alternator Serpentine Pulley and Bracket Kit by March Performance®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...
      High quality at an affordable priceExpertly made from premium materials
      $520.34 - $983.59
    • (0 reviews)
      # mpn4498786808
      Upgrade Supercharger System Pulley by Kraftwerks®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $99.99
    • (0 reviews)
      # sp24121
      Accessory Drive Pulley by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It...
      Made with precision and quality in mindBuilt to last
      $82.20 - $258.95
    • (0 reviews)
      # sp24122
      Drive Belt by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It will meet your...
      Made with precision and quality in mindBuilt to last
      $90.86
    • (0 reviews)
      # sp81396
      Powercharger Crank Spacer by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It...
      Made with precision and quality in mindBuilt to last
      $252.95
    • (0 reviews)
      # sp24127
      Pro-Street Drive Pulley by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime. It...
      Made with precision and quality in mindBuilt to last
      $313.95 - $395.95
    • (0 reviews)
      # sp24135
      Supercharger Idler Pulley Bracket by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a...
      Made with precision and quality in mindBuilt to last
      $97.35 - $254.95
    • (0 reviews)
      # sp24137
      Supercharger Pulley Assembly by Weiand®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Weiand will last a lifetime....
      Made with precision and quality in mindBuilt to last
      $82.20 - $461.95
    • (0 reviews)
      # sp16115
      Lower Pulley Bolt Kit by ARP®. To provide the reliability required in racing and high performance street applications, ARP offers these premium grade nominally rated 180,000 psi fasteners to securely attach the water pump and lower...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $27.98
    • (0 reviews)
      # sp94931
      Underdrive Pulley Kit by Dinan®. Always looking for new ways to add power, Dinan has developed this underdrive pulley. This pulley is a smaller diameter than stock, designed to eliminate parasitic drag from accessories by running them...
      +11 HP @ 8400 RPM / +7 lb/ft @ 8400 RPMEliminates parasitic drag from accessories
      $369.77 - $391.40
    • (0 reviews)
      # sp12175
      Lightweight Crank Pulley by PERRIN Performance®. A true weight savings that can be felt with every blip of the gas pedal. Lighten up your rotating engine parts to free up power. This reduction in weight from the crank shaft is equal to...
      Reduced weight and increased throttle response, horsepower, and torquePerfectly fits all 1993 or newer Subaru boxer engines
      $99.90 - $127.80
    • (0 reviews)
      # sp12179
      Pulley Cover by PERRIN Performance®. Accessorize the top of your engine and the pulleys with this cool looking cover from PERRIN. The PERRIN Performance pulley cover is constructed of 5052 Plate aluminum with precision drilled mounting...
      Durable aluminum constructionAvailable in red or black texture powder coated finishes
      $71.10
    • (0 reviews)
      # sp13978
      Crankshaft Pulley by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically engineered to make your vehicle run better. If you are...
      Designed to deliver premium qualityRight for your vehicle and lifestyle
      $48.25 - $115.05
    • (0 reviews)
      # sp83409
      ARP Pulley Nut by PPE®. Replacement Pulley Nut to be used with the PPE Dual Fueler Kit. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Thoughtfully designed to match your diesel engine needsMade to help enhance the performance of your vehicle
      $17.99
    • (0 reviews)
      # sp19218
      Lightweight Pulley Kit by GFB®. Designed utilizing the latest technology, this product by Go Fast Bits features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $53.18 - $301.91
    • (0 reviews)
      # mpn358495580
      Accessory Drive Kit by Holley®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.
      Made with precision and quality in mindBuilt to last
      $1,326.95
    • (0 reviews)
      # sp40003
      Performance Engine Pulley by Holley®. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.
      Made with precision and quality in mindBuilt to last
      $39.98 - $112.95
    • (0 reviews)
      # sp29424
      Lightweight Alternator Pulley by Torque Solution®. Torque Solution constructed this alternator pulley from high quality CNC machined billet aluminum to provide lightweight without sacrificing strength. The anodized finish seals the...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $55.31




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    You can gain horsepower by reducing the weight of your pulleys and by changing their diameter. We offer aluminum pulleys that are much lighter than the original equipment pulleys, without any reduction in strength. These pulleys are direct replacements and require no modifications for installation. Their light weight not only results in a horsepower increase, but the reduced rotational mass also improves throttle response.

    Reducing the diameter of the crankshaft drive pulley or increasing the diameter of the driven accessory pulley underdrives the accessory, slowing its rotational speed and reducing the amount of horsepower it draws. However, the size of the pulleys must be carefully calculated so your accessories continue to operate properly. Everyone wants more horsepower, but not with adverse side effects like reduced power steering assist, an alternator that doesn’t charge the battery, or an overheated engine. Our pulley kits have been extensively tested to deliver maximum horsepower with no loss of accessory functionality.

    Using underdrive pulleys to reduce accessory drag is an easy and inexpensive way to gain as much as 15 horsepower! Each kit is engineered for the specific application, ensuring straightforward installation. Most kits are designed to use the existing serpentine belt, but a belt is supplied if a different length is required. Most lightweight and underdrive pulleys are machined from high grade aluminum alloy, some with an attractive chrome or anodized finish, so if not for the horsepower increase, you’ll want them just for an engine appearance upgrade.

    The accessories on modern vehicles are generally driven by a single serpentine belt, but older performance vehicles used multiple V-belts, and even if tensioned properly, centrifugal force would often cause these belts to jump during high RPM shifts. Then as now, the answer to this problem is a deep groove pulley, but you don’t have to spend a lot of time and money searching for an original part that may have been discontinued long ago. We can supply you with pulleys that feature deep, precision machined grooves for secure belt retention even at extreme RPM changes, and some are underdriven so you gain horsepower as well.

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    Belts & Pulleys Reviews

    Average rating:  5  5 - 24 reviews
    5 of 5
    Awesome!
    First of all I'd like to say the employees at CARiD are top notch! Instead of just sending what was ordered they took the time to call me to verify options on my car that would change the belt size. This type of proactive customer service is just one reason why I buy all my parts from CARiD. The product packing was great, and the contents were not loose in the box. I was able to install all the parts in about 2 hours. The results are like night and day. The car went from peak 11 psi to peak 15 psi, and with the thermostat I'm not experiencing any cooling issues. I recommend CARiD to everyone. The prices are very competitive, and the in stock selection is just insane. Fast ship times, great prices, and awesome customer service really makes ordering parts an easier experience. Thanks CARiD.
    JPosted by James (Riviera Beach, FL) / July 22, 2017
    2003 Mini Cooper
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