MST's Excalibur Serpentine Belt System-Sand Seal features the same reliability, consistency, and overall quality of its other Serpentine Belt Systems. The pulleys are CNC machined from 6061-T6 aircraft quality aluminum to exacting tolerances. The idler assembly is designed with a knurl resistant face and comes with a high-rpm double row bearing.

The MST system works with Alternators or Generators reducing belt slip and delivering more cooling to your engine than a standard V-belt setup. The MST Serpentine Pulley Assembly will deliver mile after mile of adjustment free performance.

Reduce Belt slip!
Operate Smoother!
Run Quieter!

Kit includes: Crank Pulley (with CNC etched timing marks), Alt/Gen Pulley, Idler Bracket Assembly with Bearing, Stainless Steel Crank Bolt and Alt/Gen Nut, 4-Rib Belt, Billet Aluminum Sand Seal Adapter, Mounting Hardware, and installation instructions. Available from CB in Black, Blue, Silver and Red anodized finishes - Choose color from drop-down menu above.

**Serpentine Belt Systems will NOT fit with stock fuel injection on late model bugs.**

If you are looking for a replacement Fan Belt for your MST Serpentine Belt System, just ask for belt 4K372 at your local auto parts store.