Waukesha L5790GSIU Engine – Specifications

(Dresser / Waukesha Engine Division)

Identification (from Nameplate)

• Manufacturer: Waukesha (Dresser)

• Engine Model: L5790GSIU

• Engine Type: Industrial natural gas engine

• Bore × Stroke: 8-1/2 in × 8-1/2 in

• Specification No.: G-46083

• Serial Number: 387763

• Governed Speed: 1200 RPM (LD)

• Manufacturing Location: Waukesha, Wisconsin, USA

General Engine Data

• Configuration: Inline 6-cylinder

• Cycle: 4-stroke

• Fuel Type: Natural gas (field gas capable with proper setup)

• Aspiration: Naturally aspirated

• Cooling: Jacket water cooled

• Duty Rating: Continuous industrial / oilfield service

Displacement

• Per Cylinder: ~482 in³

• Total Displacement: ~2,890 in³ (≈47.4 L)

Performance (Typical for L5790 Series @ 1200 RPM)

(Exact rating depends on spec number and fuel quality)

• Rated Power: 450 – 525 HP

• Rated Speed: 1200 RPM

• Peak Torque: High torque, low-speed design (ideal for pump duty)