Description
Upgraded JB Performance replacement HTD kevlar reinforced internal supercharger drive belt. This is the correct tooth pattern for Powerdyne internal drive belts. This belt is 3mm wider than the original design for more strength. No internal modifications are required to use this belt.
Note: HTD belts feature a half moon tooth shape. This is the correct belt for JB Performance replacement shafts and for original Powerdyne Shafts. Be aware other venders sell a ‘Gates’ Belt in a GT tooth pattern which is made for a trapezoid shaped tooth pattern. These are not the correct belt for original Powerdyne shafts.
If you are having issues with belts breaking, the supercharger is mounted to an engine producing more torque than it was designed for, it is being overspun, belt over-tightened, or there is internal damage that is being over-looked.

Mercruiser 525/575 SCi 256, Weiand, Holley, B&M Idler Tensioner Pulley Blue 10 Rib 848091T / 6899
Powerdyne output shaft- stock triangle shaft
JB Performance Powerdyne Volute Case Clamp
Powerdyne volute clamping bolt
Front cover case bolt 