Caterpillar Introduces U.S. EPA Tier 4 Final/EU Stage IV C9.3 ACERT™ Industrial Diesel Engine with Excellent Power Density

For Worldwide Release: October 16, 2012
Release Number: IPPR0412

PEORIA, IL – Caterpillar Inc. today introduced the next generation of the Cat® C9.3 ACERT™ industrial engine which is designed to meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.  The new C9.3 ACERT industrial engine is a 6 cylinder, 9.3 liter platform which produces excellent power density with ratings from 300-400 hp (224-298kW). The C9.3 ACERT fulfills customer requirements in a wide variety of agricultural, construction, mining, forestry, waste and other industrial applications.

The C9.3 ACERT is equipped with a robust, fully-integrated Clean Emission Module (CEM), which includes a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and selective catalytic reduction (SCR) technology. Caterpillar’s SCR technology reduces NOx and provides a robust and economical solution for our customers. Cat Tier 4 engines are designed to deliver maximum customer value to Original Equipment Manufacturers (OEMs) and to end users.

“Utilizing a Cat common rail fuel system and new aftertreatment technology, the Tier 4 Final/EU Stage IV C9.3 ACERT improves fuel consumption by up to 4 percent compared to the current Tier 4 Interim/Stage IIIB model,” said Mike Reinhart, Industrial Power Systems Marketing Manager.

The Clean Emission Module simplifies OEM aftertreatment installation with a flexible design that allows mounting in horizontal or vertical configurations. This allows our existing   customers to easily transition from Tier 4 Interim/Stage IIIB to Tier 4 Final/Stage IV. The C9.3 ACERT industrial engine continues the legacy of durability, reliability, low cost of ownership and fuel efficiency.

A Comprehensive Tier 4 Final/Stage IV Industrial Engine Solution
The Tier 4 Final /Stage IV C9.3 ACERT is an excellent addition to the range of Cat industrial engines available for off-highway, highly regulated territories.  Cat industrial has a full range of industry-leading Tier 4 Final/Stage IV customer solutions, from 33.7 hp-1200 hp (25.4 bkW – 895 bkW). Caterpillar has developed specific technologies tailored to each power band, which delivers the greatest value for each customer application. 

Every Cat industrial engine has been designed with extensive OEM customer input and legendary Caterpillar machine integration experience. “This customer-focused design results in flexible power solutions that easily integrate into OEM off-highway equipment and deliver reliable, durable performance in the harshest applications,” said Reinhart.  

Sold and serviced by the most extensive dealer network in the world, Cat industrial engines are offered with comprehensive warranty package and extended service plans which provide customers with the best choice for their most demanding applications. Cat continues the legacy of durability, reliability, maximum fuel efficiency, low cost of ownership and world class support provided by the Cat dealer network.

For more information, please visit industrial-oem. To find you local Cat dealer, visit dealer-locator or email

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Note to Editors: Caterpillar rolls-out products and services in each of its territories at different time intervals. Although every effort is made to ensure that product information is released only after Caterpillar has received confirmation from our dealer network, our plants, and our marketing subsidiaries that products and services are available in the relevant region, editors are kindly requested to verify with their local dealer for product availability and specifications.

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C9.3 ACERT Tier 4 Interim Stage IIIB Technology Engine