Power Range: 764 – 3,060 kWb

The FM ALCO 251F engine is renowned worldwide for delivering efficient and reliable power in demanding stationary applications. Known as a proven workhorse, it features a strong, durable cylinder head casting and component commonality, ensuring long service life and simplified maintenance. Offering high specific output with low specific fuel consumption, the 251F remains a trusted solution across multiple applications.

Key Features:

• Strong, durable cylinder head casting for increased component life

• Exceptional commonality of components across the product line

• Proven workhorse engine suitable for diverse applications

• Reliable performance with high specific output and low fuel consumption

• Cylinder head constructed from quality iron alloy to resist high temperatures and pressures

• Fairbanks Morse is the sole OEM for the ALCO engine product line

Notes:

• All ratings subject to factory-approved application.

• Ratings based on:

  • Ambient temperature: 90 °F (32.2 °C)

  • Barometric pressure: 28.25 in Hg (71.8 cm Hg) minimum

  • Altitude: 1,500 ft (457 m) maximum

• Standby ratings available.

• kWe ratings based on generators with nominal efficiency of 96.2%.

• All dimensions and rating data apply to base load generator sets.