Exploded view - coolant pump and thermostat — AUDI
Exploded view - coolant pump and thermostat on Audi: factory workshop procedure for engines BPU, BYT, BZB, CABA. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
🔧 Engine codes this applies to
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Exploded view - coolant pump and thermostat
Thermostat housing
Removing and installing
Chapter
Thermostat
For small coolant circuit
Starts to open at approx. 105 ℃
Removing and installing
Chapter
Gasket
Renew after removing
Coolant pump
Removing and installing
Chapter
Renew toothed belt as well when renewing coolant pump
Bolt
Thread-forming
Fit and screw in bolt by hand so that it is screwed into old thread. Then tighten bolt to torque.
Tightening torque and sequence
Fig.
Seal
Renew after removing
Toothed belt cover
For toothed belt for coolant pump
Bolt
Renew after removing
20 Nm +90°
O-ring
Renew
Only for engine codes CPTA, CZEA
Removing and installing
Chapter
“
Removing and installing toothed belt sprocket for coolant pump - engine codes CPTA, CZEA
”
Toothed belt
For coolant pump
Renew toothed belt as well when renewing coolant pump
Toothed belt sprocket
For coolant pump
Different versions available; for allocation refer to
Electronic parts catalogue
Removing and installing
Chapter
Installation position:
All engine codes except CPTA, CZEA
Anchor
Engine codes CPTA, CZEA
Anchor
Apply sealant when installing
Bolt
8 Nm
Bolt
Thread-forming
Fit and screw in bolt by hand so that it is screwed into old thread. Then tighten bolt to torque.
Tightening torque and sequence
Fig.
Cover
For thermostat
Two connections for coolant hoses from June 2013 onwards
Gasket
Renew after removing
Thermostat
For large coolant circuit
Different versions available
Electronic parts catalogue
Up to 11.2012: Starts to open at approx. 80°C
From 11.2012 onwards: Starts to open at approx. 87°C
Removing and installing
Chapter
Installation position
Fig.
Bolt
Tightening torque and sequence
Anchor
Installation position of thermostat for large coolant circuit
Must be positioned with centring pin in guide
arrow
in thermostat housing.
Thermostat housing to coolant pump - tightening torque and sequence
Tighten bolts in the sequence
A ... F
to 7 Nm.
Cover for thermostat to thermostat housing - tightening torque
Tighten bolts for cover
1
in the sequence
A ... D
to 7 Nm.
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.