Supercharger and Alternator belts

29 Dec 2005 Supercharger and Alternator belts

Update 20210918: I didn’t install the Eggenfellner Subaru engine, so any post that references that can be ignored or used as a cautionary tale about how to avoid wasting many years and $50k.

There are three belts used in the engine package.

1. The timing belt
2. The supercharger belt
3. The alternator belt

The timing belt is a standard Subaru product, so it should be easy to find. The other belts are somewhat “custom”, so here’s an attempt to try to document them.

The alternator belt has the number 5040270.

The supercharger belt appears to be a Gates Powergrip GT2 15128MGT20. Another number on the belt is 2524MC.