Engine number and engine data

WARNING: This page is about a different car, the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Engine number

Fig 1: Identifying Front Engine Cover

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Remove front engine cover - arrows -.

Fig 2: Identifying "Engine Code" And "Serial Number"

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The engine number ( "engine code" and "serial number" ) is located at front on cylinder block, below right cylinder head - arrow 1 -.
Additionally, a sticker - arrow 2 - is affixed to front coolant line with "engine code" and "serial number".
The engine code is also located on the vehicle data plate.

Engine data

Code letters		BKH
Displacement	ltr.	3.123
Output	kW at 1/rpm	188/6500
Torque	Nm at rpm	330/3250
Bore	Dia. mm	84.5
Stroke	mm	92.8
Compression ratio		12.5
RON	min.	95 ¹⁾
Fuel injection and ignition system		Simos
Ignition sequence		1-4-3-6-2-5
Exhaust gas recirculation		no
Charging		no
Knock control		yes
Variable valve timing		yes
Variable intake manifold		no
Secondary air injection (AIR) system		no
Valves per cylinder		4
¹⁾ Super unleaded RON 91 is permissible, although with reduced power.