Supercharger Tensioner Pulley

Supercharger Tensioner Pulley


Part Number: STP-635

Shipping Weight: 1.00 pounds

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  • 1996-2004 Bonneville SSEi with L67 (supercharged) engine
  • 1997-2003 Grand Prix GTP with L67 (supercharged) engine
  • 2004 Grand Prix GTP with L32 (supercharged) engine
  • 1997-2003 Grand Prix GTX with L67 (supercharged) engine
  • 2004 Impala SS with L67 (supercharged) engine
  • 1996-1999 LeSabre with L67 (supercharged) engine
  • 2004 Monte Carlo SS with L67 (supercharged) engine
  • 1996-2004 Park Avenue Ultra with L67 (supercharged) engine
  • 1996-2004 Regal GS (supercharged) with L67 (supercharged) engine
  • 1996-2004 other applications with L67 or L32 (supercharged) engines
The stock L67/L32 supercharger tensioner pulley measures 3.0", and our oversized unit is 3.5" in diameter. Swapping your stock tensioner pulley for this one only takes a few minutes and a 15 mm. wrench (W-bodies) or T50 Torx socket (G and H-bodies*). There are three basic advantages to this larger tensioner pulley. First, you can run a stock supercharger belt with a 3.20" or 3.40" supercharger pulley on your M90. Second, you can increase belt tension on whatever pulley and belt combination you run. And third, you will effectively increase your supercharger belt's 'wrap' around the supercharger pulley, helping to eliminate belt slippage.

These are now made of a more durable metal construction.


Some G and H-bodies use left-handed threads on this tensioner and you will need to swap the bolt from the stock pulley to this one.

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