The locomotive is an F59PHI originally built by Electro-Motive Diesel in October 2001. EMD has installed its 710ECO™Repower upgrade package with the latest microprocessor-controlled locomotive engine ...

The new locomotives were funded by Caltrans with approximately $100 million in state, federal and local funds, and will replace Amtrak-owned EMD F59PHI units, which are nearly 20 years old.