Renewing exhaust manifold gaskets: Audi A8 D4 (CEJA, CTNA)
Step-by-step renewing exhaust manifold gaskets for the Audi A8 D4 (CEJA/CTNA): 10 steps. 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 A8 D4 (4H, 2010–2017)
- Renewed: nuts
- Also covered elsewhere: Electronic parts catalogue
Don't miss
- For illustration purposes, the installation position is shown with the engine removed.Mounting strips remain installed.
- Renew the nuts.Coat threads of nuts with high-temperature paste; for high temperature paste refer to Electronic parts catalogue.
📋 Procedure
- Remove front silencer on relevant side .
- Fully remove relevant front wheel housing liner General body repairs, exterior66Wheel housing liner; Removing and installing wheel housing liner (front).
- Remove corresponding air cleaner housing .
- Detach vacuum hose (1) from plenum chamber partition panel, move clear at clip (arrow) and move to right side.
- Loosen sets of nuts in the sequence (3 ... 1). [Note: For illustration purposes, the installation position is shown with the engine removed.Mounting strips remain installed.]
- Unscrew nuts, detach exhaust manifolds (left-side, front and rear) from mounting strips, detach from cylinder head and place down.
- Loosen sets of nuts in the sequence (3 ... 1). [Note: For illustration purposes, the installation position is shown with the engine removed.Mounting strips remain installed.]
- Unscrew nuts, detach exhaust manifolds (right-side, front and rear) from mounting strips, detach from cylinder head and place down.
- Detach exhaust manifold gasket. [Note: Renew the nuts.Coat threads of nuts with high-temperature paste; for high temperature paste refer to Electronic parts catalogue.]
- Install air cleaner housing .
Other AUDI procedures
- Removing and installing thermostat housing – Audi TT Mk1
- Removing and installing timing chain covers (left/right)
- Removing and installing high-pressure pipe – Audi A8 D4 · 1 torque figures
- Removing and installing gearbox mounting – Audi TT Mk1 1.2
- Removing and installing coolant pipe (right-side) on gearbox
- 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.