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Volkswagen Workshop Service and Repair Manuals

Engine data > < Removing and installing engine speed sender
Engine number
Engine number
   
The engine number („code letters“ and „serial number“) can be found at the joint between the engine and gearbox.
The engine code is also stamped on the cylinder block behind the oil filter.
Vehicles with four digit engine codes
Starting with the letter „C“, new four digit engine codes have been introduced. The first 3 digits denote the mechanical design of the engine and are stamped on the engine as before. The fourth digit denotes the performance and torque rating of the engine and depends on the engine control unit. The four digit engine code can be found on the data plate and on the vehicle data sticker. It can also be read from the engine control unit.
  Note
Fitting locations of vehicle data sticker → Booklet.
  N00-10948

Engine data > < Removing and installing engine speed sender