In 1981 Caterpillar introduced the 3500 Engine series with great anticipation. As we know today, the Cat 3500 engine platform is one of Caterpillar’s most successful engine series and the industry gold standard for power, performance, durability, sustainability and offers unrivaled support from the worldwide Cat Dealer network. Customers ask for it by name and know that the 3500 represents the best of the Cat brand promise. More than 190,000 3500s are working around the globe to power communities, hospitals and data centers, tug boats and ferries, large mining trucks and freight trains, well stimulation rigs and oil platforms, and the number grows every day. Now with the introduction of the 3500E with more power, greater fuel economy, increased emissions capability while lowering the customer’s total cost of ownership, the 3500E is gearing up to further enhance the 3500 legacy for the next 35 years.