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Magnuson Superchargers HD Tensioner Upgrade


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  • Model: M-31-12-00-082
  • Manufactured by: Magnuson Superchargers

Please allow 1-5 business days for product to ship. Most items are dropped shipped from manufacture.

The Magnuson Upgraded HEAVY DUTY Tensioner is a MUST-HAVE upgrade when running at higher boost levels. Most customers running over 8psi have experienced issues with the standard tensioner that comes with the supercharger kits. At standard loads, running at 7 or 8 psi, the stock tensioner is fine, however, we have found that when you start getting up to the 10-15 psi range with the smaller pulleys slip and belt fatigue (and failure) occur. This tensioner has an 8-rib pulley with a stronger arm and spring to reduce slip and breakage under the heavier loads produced at higher boost levels.

Fits ALL Magnuson Supercharged:

  • Pontiac GTO
  • GM Trucks  1999-2007 Classic
  • SSR
  • Trailblazer SS

PRICE MATCH! We are the 1st and largest distributor in the world for superchargers and supercharger parts. If you find this system for a lower price through another dealer, give us a call at 818-518-9889 or email, provide the Pricing and Store, and we will try our best to beat the price for you! You will see why people prefer us over others. is an Authorized distributor, be cautious from other companies that are not Authorized Distributors.
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