Caterpillar Backhoe loaders

AdBlue (DEF) capacity & service interval

Caterpillar Backhoe loaders use AdBlue (DEF) fluid with a capacity of 19 liters. The data covers 4 configurations of this model.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
415 (2020- )
  • Use: Normal
  • Capacity 19 liter
416 (2020- )
  • Use: Normal
  • Capacity 19 liter
420 (2020- )
  • Use: Normal
  • Capacity 19 liter
430 (2020- )
  • Use: Normal
  • Capacity 19 liter

Additional Notes

  • The Caterpillar Backhoe Loaders 415, 416, 420, and 430 all share an identical AdBlue (DEF) tank capacity of 19 liters, indicating a standardized reservoir size across these four models introduced from 2020.
  • A 19-liter DEF tank is a moderately sized reservoir for construction equipment, reflecting the volume of fluid held in the selective catalytic reduction system rather than a service refill quantity tied to a drain-and-fill procedure.
  • Each of the four models specifies the AdBlue (DEF) capacity under normal use conditions, meaning the 19-liter figure applies to standard operating environments rather than severe-duty cycles.
  • The selective catalytic reduction system noted across all four configurations is an emissions control technology that consumes DEF to reduce nitrogen oxide emissions from diesel exhaust, making the tank capacity a relevant operational parameter for refill planning.
  • Because the 415, 416, 420, and 430 all carry the same 19-liter capacity, operators across different model variants within the 2020 lineup work with a consistent DEF volume regardless of which specific backhoe loader configuration is in service.

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