Between January 1, 2019 and March 1, 2021 1023 Diesel sold at least 211 defeat devices and installed those devices on at least 32 heavy duty diesel motor vehicles. This settlement is part of EPA's National Compliance Initiative, Stopping Aftermarket Parts Defeat Devices for Vehicles and Engines. The CAFO requires 1023 Diesel to pay a civil penalty of $65,000. The penalty amount was reduced based on the company's inability to pay a higher penalty and continue in business.