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Caterpillar C18 ACERT Engine Engine

The Caterpillar C18 ACERT is a 18.1 L 6-cylinder air-to-air aftercooled engine rated at 1800 rpm, producing up to 910 kW. It powers generator sets from Caterpillar, including the AD45, C18, C18 ACERT OILFIELD GENERATOR SET and LEHM8112-00. It holds 62 L (16.4 gal) of oil and 48.8 L (12.9 gal) of coolant.

Also known as: Cat C18 ACERT, C18 ACERT™

18.1 L
Displacement
6
Cylinders
1800 rpm
Rated speed
910 kW
Gross power

Engine specifications

Oil capacity62.0 L
Coolant capacity48.8 L
Displacement18.1 L
Cylinders6
AspirationAir-to-Air Aftercooled
Rated speed1800 rpm
Gross power910 kW

Generator sets powered by this engine

9
Caterpillar AD45Caterpillar C18Caterpillar C18 ACERT OILFIELD GENERATOR SETCaterpillar LEHM8112-00Caterpillar X01140Caterpillar XQ1140Caterpillar XQ1140 Tier 4 FinalCaterpillar XQ570Caterpillar XQ570 Tier 4 Final

This engine also powers 146 machine(s) on Power Equipment Info.

Filters for this engine

  • Air filter: Caterpillar 1063973 Caterpillar 1327169 Caterpillar 1236856 Caterpillar 30009151 Caterpillar 2310167 Caterpillar 6I0274 Donaldson P533884 Donaldson P538007
  • Fuel filter: Caterpillar 1165436 Caterpillar 3089679 Caterpillar 3890433 Donaldson P550625 Donaldson P551311 Donaldson P551316
  • Fuel filter (secondary): Caterpillar 1165436 Caterpillar 3089679 Donaldson P550625 Donaldson P551311
  • Oil filter: Caterpillar 3890434 Donaldson P551808

Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.

Common questions

What is the oil capacity of the Caterpillar C18 ACERT?

The Caterpillar C18 ACERT engine has an oil capacity of 62.0 liters.

What is the displacement of the Caterpillar C18 ACERT?

The Caterpillar C18 ACERT has a displacement of 18.1 liters with 6 cylinders.

Which generators use the Caterpillar C18 ACERT engine?

The Caterpillar C18 ACERT powers 9 generator set(s), including Caterpillar AD45, Caterpillar C18, Caterpillar C18 ACERT OILFIELD GENERATOR SET, Caterpillar LEHM8112-00, Caterpillar X01140.