Fendt 800 Vario COM3b

AdBlue (DEF) capacity & service interval

The Fendt 800 Vario COM3b uses AdBlue (DEF) fluid with a capacity of 42 liters. The data covers 5 configurations of this model.

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

TypeSpecifications
819 Vario Stage IIIb / EPA 4i, 832/../0101-> (2011-2016)
  • Use: Normal
  • Capacity 42 liter
822 Vario Stage IIIb / EPA 4i, 833/../0101-> (2011-2016)
  • Use: Normal
  • Capacity 42 liter
824 Vario Stage IIIb / EPA 4i, 834/../0101-> (2011-2016)
  • Use: Normal
  • Capacity 42 liter
826 Vario Stage IIIb / EPA 4i, 835/../0101-> (2011-2016)
  • Use: Normal
  • Capacity 42 liter
828 Vario Stage IIIb / EPA 4i, 836/../0101-> (2011-2016)
  • Use: Normal
  • Capacity 42 liter

Additional Notes

  • The Fendt 800 Vario COM3b AdBlue system is associated with selective catalytic reduction (SCR), a technology that injects diesel exhaust fluid into the exhaust stream to convert nitrogen oxides into nitrogen and water vapor.
  • All five variants covered by the specifications — the 819, 822, 824, 826, and 828 Vario Stage IIIb / EPA 4i — share an identical AdBlue tank capacity of 42 liters.
  • A 42-liter AdBlue reservoir is a substantial tank size for agricultural machinery, reflecting the extended field operation cycles typical of high-horsepower tractors where frequent refilling would be impractical.
  • The Stage IIIb / EPA 4i emissions classification applies uniformly across the 819 through 828 model range within the 2011-2016 production span, indicating a shared emissions compliance framework across all five variants.
  • Each variant carries a serial number prefix in the 832 through 836 series, with the 819 Vario assigned prefix 832, the 822 assigned 833, the 824 assigned 834, the 826 assigned 835, and the 828 assigned 836, allowing precise identification of the applicable SCR tank specification by chassis number.
  • The capacity figure of 42 liters represents a service fill value, meaning the volume of AdBlue the tank holds during normal operation rather than a dry-fill or overhaul measurement.
  • All five variants carry a normal use condition designation, which in the context of AdBlue consumption means the 42-liter capacity figure applies under standard operating loads rather than elevated-demand or severe-duty cycles.

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