Perkins launched its first Tier 4 Final emissions-compliant engines on March 22, 2011 at the ConExpo-Con/Agg exhibition in Las Vegas. The new 400F, the latest addition to company’s popular 400 Series range, meets Tier 4 Final / Stage IIIB regulations, which come into force January 2013 for engines above 25 horsepower in EPA (Environmental Protection Agency) jurisdictions and above 49.5 horsepower in the EU (European Union).