Removing and installing cylinder head covers: Audi 2.7 (AGB, AZB)
Step-by-step removing and installing cylinder head covers for the Audi 2.7 (AGB/AZB): factory workshop text.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 12 workshop diagrams for AGB
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
AZB
Removing and installing left cylinder head cover
Removing
Unscrew bolts -arrows- and remove engine cover panels -A...C-.
Remove air duct -arrows-.
Remove coolant reservoir -arrows- and move it clear to the side.
Note:
Leave coolant hoses connected.
Unplug connector from coolant level monitor.
Remove cover panel from cylinder head cover (cylinder bank 4-6).
Release hose clamp -arrow-.
Remove upper section of intake pipe -1-.
Disconnect hose -2-.
Detach water pipe -3-.
Note:
Insert plug in lower section of intake pipe.
Pull off hose -1-
Pull plug connectors off ignition coils.
Pull crankcase breather off cylinder head cover.
Remove ignition coils.
Remove cylinder head cover.
Installing
Install in reverse sequence; note the following points:
Seal end points of joints between bearing caps and cylinder head.
Before installing cylinder head cover and gasket, carefully apply a small quantity of sealant D 454 300 A2 at the four end points of the sealing surfaces on the cylinder head -arrows-, using a small screwdriver.
Removing and installing right cylinder head cover
Removing
Unscrew bolts -arrows- and remove engine cover panels -A...C-.
Remove cover above air cleaner.
Remove air duct -arrows-.
Warning
Fuel system is under pressure. Before opening the system, place a cloth around the connection. Then release pressure by carefully loosening the connection.
Disconnect fuel supply line and fuel return line -1- and -2-, and move fuel lines clear.
Pull hose off ACF valve -3-.
Unplug connector -1- from air mass meter.
Unplug connectors -2- from ignition output stages, and move wiring clear.
Remove air cleaner.
Remover cover panel from right-hand cylinder head cover -arrows-.
Disconnect hose -1-.
Disconnect hose -2-.
Detach upper section of intake pipe -3-.
Note:
Insert plug in lower section of intake pipe.
Unscrew bolt securing toothed belt guard from cylinder head cover.
Unplug connectors from ignition coils.
Pull crankcase breather off cylinder head cover.
Remove ignition coils.
Remove cylinder head cover.
Installing
Install in reverse sequence; note the following points.
Seal end points of joints between bearing caps and cylinder head.
Before installing cylinder head cover and gasket, carefully apply a small quantity of sealant at the four end points of the sealing surfaces on the cylinder head -arrows-, using a small screwdriver.
Sealant
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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.
Ask about my car →Other AUDI procedures
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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 → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.