Overview - Coolant Pump/Coolant Thermostat
WARNING: This page is about a different car, the 2025 Audi A4 allroad and 2025 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
- Connection
- O-Ring
- Quantity: 2
- Always replace after removing
- Coat with coolant
- Alignment Pin
- Inserted in the cylinder block
- Bolt
- Tightening Specifications and Sequence. Refer to Fig 2.
- Seal
- Always replace after removing
- Coolant Pump
- Removing and Installing. Refer to COOLANT PUMP, REMOVING AND INSTALLING .
- For a new coolant pump, remove the protective cap
- Bolt
- Tightening sequence. Refer to Fig 3.
- Toothed Belt
- For the coolant pump
- Removing and Installing. Refer to COOLANT PUMP TOOTHED BELT, REMOVING AND INSTALLING .
- Bolt
- 9 Nm
- Toothed Belt Guard
- There are different versions. Refer to the Electronic Parts Information (ETKA) for the allocation.
- Bolt
- Left-hand thread
- 17 Nm
- Toothed Belt Sprocket
- Installation position: the splines point to the intake side balance shaft
- Seal
- for the intake side balance shaft
- Replacing. Refer to BALANCE SHAFT GASKET, REPLACING, INTAKE SIDE .
- Intake Side Balance Shaft
- Seal
- Always replace after removing
- Engine Temperature Control Adjusting Element -N493-
- Removing and Installing. Refer to Engine Temperature Control Actuator -N493-, REMOVING AND INSTALLING .
-- Tighten the bolts to 9 Nm in the following sequence: -1 to 5-.
-- Tighten the coolant pump bolts to 9 Nm in a -1 to 4- sequence.