Compare the complete generator.
The engine brand is one part of a generator specification. The alternator, selected voltage, cooling system, operating duty and enclosure all affect the final package.
Which engine brand should I choose?
Start with the required load, duty and local service support. Then compare the exact generator specification, efficiency at your expected load, installation constraints and quoted lead time.
Does PPG manufacture the engines?
The engines are manufactured by the named engine brands. PPG supplies and specifies generator packages around those engine and alternator configurations.

