Sauer S 2100 ULT


The Sauer S 2100 ULT is a turbocharged four-stroke aircraft engine for homebuilt and ultralight aircraft.

Design and development

The engine is based on the Volkswagen Wasserboxer engine. It is extensively modified for aircraft use and all the parts are custom made. The engine is derived from the certified engines produced by the same manufacturer and used in several motorgliders and light aircraft.

Operational history

At least one Asso X is reported to be using this engine.

Applications