Dismantling and assembling air cleaner — AUDI
Dismantling and assembling air cleaner on Audi: factory workshop procedure for engines BAG, BAH, BCY, BLF. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 22 workshop diagrams for BAG
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
BRV
Removing air cleaner housing assembly
=>Page
24-21
Exploded view
Cover
Intake air duct (two front bolts on front end: 9 Nm)
Intake hose
Bottom part of air cleaner housing
Filter element
Gasket
Replace if damaged
Top part of air cleaner housing
Gaskets
Replacing =>Page
24-31
Air mass meter -G70
Cylinder bank 1
Gaskets
Replacing =>Page
24-31
Air mass meter 2 -G246
Cylinder bank 2
Holder
Intake hose
Intake air duct (two front bolts on front end: 9 Nm)
Screw-type clips
Removing and installing air cleaner housing
Removing
Unfasten quick-release fasteners -1- and -2- and lift out engine cover -arrows-.
Detach cover -arrow- at power steering reservoir.
Unfasten hose clamps -1- and -3- and detach air hoses.
Screw out air cleaner securing bolt -2-.
Screw out bolt -1- at holder on left for air cleaner housing.
Disengage crankcase breather hose at clip -2-.
Use clean pieces of foam -arrows- for example to seal off openings in rear air pipe to prevent ingress of foreign matter.
Unscrew right securing nut -arrow- for air cleaner housing.
Lift rear edge of air cleaner housing slightly ...
... and unplug connectors -arrow- at both air mass meters.
Detach air cleaner housing.
Installing
Install in reverse order, paying attention to the following:
Check that rubber grommets -1- have been correctly inserted in intake manifold.
Check air mass meter oil seals -2-.
Sealing lips must not be damaged
Oil seals must be firmly in position in rear air pipe
Replace loose or damaged oil seals => Page
24-31
.
Moisten rubber grommets -1- and oil seals -2- with small quantity of engine oil (never use lubricant containing silicone).
Move air cleaner housing into installation position.
Attach connectors -arrow- to both air mass meters.
Start by pressing down rear edge of air cleaner housing -arrows-.
Air mass meters must be pressed into openings in rear air pipe -arrow-
Then press down centre of air cleaner housing -arrows-.
Retainer tabs on underside of air cleaner housing must be pressed into rubber grommets at intake manifold -arrow-
Tighten right securing nut -arrow- for air cleaner housing.
Tighten bolt -1- at holder on left for air cleaner housing.
Engage crankcase breather hose at clip -2-.
Tighten front securing bolt -2- for air cleaner housing.
First slide hose clamps onto connections of air cleaner housing and air pipes.
Fit air hoses between air cleaner housing and air pipes.
Tighten hose clamps -1- and -2- to 0.4 Nm (take care not to deform air pipes).
Check correct installation of air cleaner housing.
Air mass meters must be fully inserted in rear air pipe
Dimension a = max. 5 mm
Tightening torques
Component · Nm
Front of air cleaner housing to intake manifold · 22
Air cleaner housing to right holder · 9
Left holder for air cleaner housing to cylinder head cover · 9
Clamps for air hoses · 0.4
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 →🎬 Video walkthrough
Independent video tutorial by AUTODOC (YouTube) — a helpful visual companion to the steps above.
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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.