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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> External Pages >> Different variant/trim >> Section 1 (Cooling System (4-Cylinder Direct Injection 2.0L 4V TFSI Engine (Ea 888EVO4))) >> 19 Cooling System >> Coolant Pump/Coolant Thermostat >> Overview - Coolant Pump/Coolant Thermostat

Overview - Coolant Pump/Coolant Thermostat

WARNING: This page is about a different variant/trim than selected.
Fig 1: Coolant Pump/Coolant Thermostat Exploded View
GWWA19-11883Courtesy of AUDI OF AMERICA, LLC
  1. Connection
  2. O-Ring
    • Replace after removing
    • Coat with coolant
    • Quantity: 2
  3. Alignment Pin
    • Inserted in the cylinder block
  4. Bolt
    • Tightening Specifications and Sequence. Refer to Fig 2.
  5. Seal
    • Replace after removing
  6. Coolant Pump
  7. Bolt
    • Tightening sequence. Refer to Fig 3.
  8. Toothed Belt
  9. Bolt
    • 9 Nm
  10. Toothed Belt Guard
    • There are different versions. Refer to the Parts Information for the allocation.
  11. Bolt
    • 17 Nm
    • Left-hand thread
  12. Toothed Belt Sprocket
    • Installation position: the splines point to the intake side balance shaft
  13. Seal
  14. Intake Side Balance Shaft
  15. Seal
    • Replace after removing
  16. Engine Temperature Control Actuator -N493-

Engine Temperature Control Actuator N493 - Tightening Specification and Sequence 

Fig 2: Engine Temperature Control Actuator -N493- - Tightening Sequence
GWWA19-13399Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts to 9 Nm in the following sequence: -1 to 5-.

Coolant Pump - Tightening Specification and Sequence 

Fig 3: Coolant Pump - Tightening Sequence
GWWM19-10052Courtesy of AUDI OF AMERICA, LLC

-- Tighten the coolant pump bolts to 9 Nm in a -1 to 4- sequence.