The bus was based on a license-built chassis of the Saurer 3CT1D bus designed by Swiss Saurer company and a six-cylinder Saurer BLD engine, also license-built in Poland.
Zawrat |
In Poland the state-owned Państwowe Zakłady Inżynieryjne produced license-built Saurer engines (powering, among others, the 7TP and 9TP tanks) and coach chassis used in the Zawrat bus.