Overview#

The PSI 5.7L NA is a 5.7-liter, 8-cylinder v-8 natural gas / lpg engine used in commercial and industrial generator applications in the 50-60 kW class. Naturally Aspirated for reliable power density across standby and prime-rated duty cycles.

This engine powers generators from Blue Star Power Systems, making it one of the more widely deployed prime movers in its power class for the commercial standby market.

Generators using this engine#

Blue Star GM50-03 (50 kW)
Blue Star GM60-02 (60 kW)
Blue Star GM60-02P (60 kW)

Found in these gensets

Generator models that ship with or are commonly paired with the PSI 5.7L NA.

Blue Star Power Systems

Blue Star GM50-03

Open Basler controller + PSI engine + Stamford alternator — no proprietary lock-in. Non-proprietary components serviceable by any qualified tech.

50 kW standby · Natural Gas / LPG · Liquid-cooled

50 kW natural gas standby for light commercial, retail, and small office buildings where gas-fueled backup and component independence matter.

50 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 5.7L eight-cylinder naturally aspirated V8 engine, Stamford UCI224D alternator, DSE DCP7310 controller, 208-600V output.

EPA Stationary Spark Ignition3-phasecommerciallight-commercial

Blue Star Power Systems

Blue Star GM60-02

Open Basler controller + PSI engine + Stamford alternator — no proprietary lock-in. Non-proprietary components serviceable by any qualified tech.

60 kW standby · Natural Gas / LPG · Liquid-cooled

60 kW natural gas standby for light commercial, retail, and small facilities where gas-fueled backup and component independence matter.

60 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 5.7L eight-cylinder naturally aspirated V8 engine, Stamford UCI224E alternator, DSE DCP7310 controller, 208-600V output.

EPA Stationary Spark Ignition3-phasecommerciallight-commercial

Blue Star Power Systems

Blue Star GM60-02P

Open Basler controller + PSI engine + Stamford alternator — prime-rated, no proprietary lock-in. Serviceable by any qualified tech.

60 kW standby · Natural Gas / LPG · Liquid-cooled

55 kW prime natural gas for continuous-duty commercial applications, cogeneration sites, and facilities needing 24/7 gas-fueled power.

55 kW prime / 60 kW standby natural gas / LP generator from Blue Star Power Systems. PSI 5.7L eight-cylinder V8 with catalyst/silencer, Stamford UCI224E alternator, DSE DCP7310 controller, 208-600V output.

EPA Stationary Spark Ignition3-phasecommerciallight-commercial

Overview#

Generators using this engine#

Found in these gensets

Blue Star GM50-03

Blue Star GM60-02

Blue Star GM60-02P

Need service for the PSI 5.7L NA?