Removing and installing rear coolant pipe with thermostat housing — AUDI
Removing and installing rear coolant pipe with thermostat housing on Audi: 16 steps, engines CBZA. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A1 (8X, 2010–2018)
- Opens: coolant
- Renewed: gaskets
Don't miss
- Renew gaskets, seals and O-rings.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
- Do not reuse coolant.
🔧 Engine codes this applies to
📋 Procedure
- Drain coolant .
- Remove air cleaner housing .
- Release hose clips (arrows) and detach coolant hoses.
- Move clear electrical wiring harness (1).
- Unplug electrical connector (2) at coolant temperature sender G62.
- Pull off retaining clip (3).
- Remove bolts (arrows) and move bracket (1) clear to one side.
- Detach thermostat housing from rear coolant pipe.
- Release hose clip (arrow) and disconnect coolant hose from rear coolant pipe.
- Detach rear coolant pipe (1) from cylinder block (3). [Note: Renew gaskets, seals and O-rings.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
- Clean and smoothen sealing surfaces for seal (2).
- Lubricate seal lightly with coolant.
- After securing thermostat housing, move coolant pipe up against housing as far as stop and only then insert retaining clip (arrow).
- Check that coolant pipe is firmly secured in thermostat housing.
- Install air cleaner housing . [Note: Do not reuse coolant.]
- Fill up with coolant .
Other AUDI procedures
- Removing and installing valve stem oil seals (cylinder head removed)
- Checking fuel pressure, engine codes CDLG, CAVB, CAVC, CAVD, CBZA, CBZB, CTHD, CTKA
- Checking holding pressure, engine codes CDLG, CAVB, CAVC, CAVD, CBZA, CBZB, CTHD, CTKA
- Removing timing chain – VW 1.2 CBZA/CBZB · 1 torque figures
- Removing and installing fuel delivery unit/fuel gauge sender - vehicles with four-wheel drive
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
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.