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Home >> BMW >> 2017 >> 530i >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel Supply System - Operating Fluids >> 2.0 Def Extraction And Refill >> Overview of DEF (Diesel Exhaust Fluid) Extractor

Overview of DEF (Diesel Exhaust Fluid) Extractor

Always refer to the latest Repair Instructions: RA16 19 006 (E70 Active), RA16 19 060 (E70 passive), or RA16 19 070 (E90) for important safety considerations when working with DEF.

The DEF Extractor/Filler unit removes DEF from the system, using compressed air to create a vacuum using the Venturi principle. The extractor can hold 11 liters of DEF fluid.

DEF Extractor (P/N 81 39 2 153 908): 

  1. Shop air connection
  2. Venturi valve block
  3. Exhaust hose for the valve block
  4. Extraction line to service the port on the SCR system
  5. DEF level indicator
Fig 1: Overview Of DEF Extractor
G07041609Courtesy of BMW OF NORTH AMERICA, INC.