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C9.3 ACERT™ Tier 4 Final Engine

C9.3 ACERT™ Tier 4 Final Engine

At a Glance

Minimum Rating
300 BHP
Maximum Rating
400 BHP
EPA Tier 4 Final and EU Stage IV
44 in
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Cat C9.3 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C9.3 ACERT engines to deliver excellent performance with low operating costs while meeting tight environmental requirements. This is an ideal engine for applications that require compliance with the highest emission standards in well service applications such as workover rigs, pump skids, acidizing units, cementing units, coil tubing units, and hydraulic power units. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. C9.3 ACERT engines with ratings: 224-298 bkW (300-400 bhp) @ 1800-2200 rpm are designed to meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. This information about Emissions describes the particular rating’s emissions technology. For more information about emissions certification, please contact your local Cat dealer.

General Specifications

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Minimum Rating 300BHP
Maximum Rating 400BHP
Aspiration Turbocharged-Aftercooled
Displacement 567.5in³
Flywheel and Flywheel Housing SAE 1 or 2
Flywheel Teeth 113 (SAE 1), 138 (SAE 2)
Stroke 5.87in
Bore 4.53in


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Emissions EPA Tier 4 Final and EU Stage IV


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Length 44in
Width 40.4in
Height 41.9in
Weight 1950lb