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Metco Motorsports 4-Piece Idler Kit w/Single Ball Bearing Idlers
Prevent supercharger belt slip and exploding stock idlers with our Metco 4-Piece Idler Kit. Our kit includes 4 of Metco's single bearing idlers and an Aux Idler bracket. The Aux Idler bracket works by mounting an idler just to the right of the supercharger belt pushing the belt towards the passenger side wrapping it better on the supercharger pulley. This will greatly reduce the risk of belt slip which is the biggest factor in lost boost for the 03-04 Cobras. The other 3 idlers in the kit replace the stock idlers which have the tendency to simply explode under load. The stock idlers are made thin so replacing them with the heavy duty Metco billet idlers will keep you from having to deal with an exploding stock idler.
The Metco pulleys are CNC-machined from billet aluminum and hard-coat anodized on the belt surface and back side for long-lasting surface protection. A heavy-duty bearing is precision-fit into the center section, and a snap-ring ensures everything stays in place.
The kit includes a Grade 8 retaining bolt with a captured washer to mount this idler pulley to the original or Metco Motorsports pulley mount.
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This comprehensive kit allows the user to replace the heavy factory crankshaft pulley and cage assembly with a lightweight, precision-machined aluminum hub and interchangeable outer ring. The kit includes all of the necessary hardware, including a billet bracket to cleanly relocate the factory crank idler pulley. Once this kit is installed, the user can adjust the vehicle's boost level by simply changing the outer pulley ring to any of the available Metco pulley rings, a process that takes just minutes.
This kit is custom-engineered to be a complete bolt-on, with no cutting, drilling, or irreversible changes required. A special tool is included to assist the installer with removal of the factory pulley retaining bolt. In most cases, total time required for installation is about two hours.
This kit is identical to the Metco Motorsports ICPCOBRA2 except that this kit allows the user to select one pulley ring instead of two.
Pulley ring choices include: 1" smaller than stock diameter (for use with Kenne-Bell or Whipple superchargers), stock diameter, +2 lbs, +4 lbs, +6 lbs, +8 lbs, and +10 lbs. Please make your selection above.
Please note that Metco offers underdrive alternator pulleys that are recommended for use with +4 lb, +6 lb, +8 lb, and +10 lb crank pulley rings. These alternator pulleys are listed in the "Alternator Pulley" in the 03-04 Mustang Cobra section of our site.
Note 1: Metco Motorsports crankshaft pulley rings as included in this kit are also available separately.
Note 2: A special crank pulley hub is available for applications using the ATI harmonic balancer for the Cobra (PN 918036). If your car is equipped with this balancer, please contact us for pricing and availability.
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