Caterpillar C27 ACERT
Series: Other models
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Caterpillar industrial engines – other models: the collective page of EPA-certified industrial diesel engines outside the named C ranges, from the C9.3 to the C27 ACERT, 413 to 645 kW, Tier 2 to Tier 4 Final
Caterpillar is the US construction-machinery and engine group with engine manufacturing in Mossville and Peoria, Illinois. The C ranges denote roughly the engine displacement in litres, and the ACERT designation stands for Advanced Combustion Emissions Reduction Technology, Caterpillar's own emissions technology for meeting US standards without a permanent aftertreatment system. This page gathers the EPA-certified industrial engines outside the named ranges, from the C9.3 ACERT to the C27 ACERT.
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The register lists here 6 versions with 413 to 645 kW rated output at 1,800 to 2,100 rpm, all six-cylinder with 130 to 145 mm bore and 162 to 183 mm stroke. Maximum torque ranges from 2,870 to 3,422 Nm, model years from 2012 to 2026. The turbochargers cover variable-geometry, non-waste-gate and waste-gate designs side by side, and the emission stages include Tier 2, Interim Tier 4 and Tier 4 (Final or Phase-in).
Engines in this power class drive standby generator sets, marine propulsion, drilling rigs and heavy construction machinery; Caterpillar ranks here alongside Cummins, MTU and Volvo Penta among the largest suppliers worldwide. The spread from the C9.3 to the C27 shows how broadly the industrial engine programme is set up between mid-range output and large units.
On a used purchase, operating hours count, along with the condition of the turbocharger, the tightness of the charge-air ducting, and on the newer Tier 4 Final engines the function of the diesel particulate filter and SCR catalyst; the cooling system, injection pumps and parts supply run through the worldwide Cat dealer network.
Sources: SpecCodex register, model data: Caterpillar Industriemotoren (weitere Modelle), Caterpillar
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
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Other models in this series
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Diesel engine in 3D section
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