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Replacing the Timing Belt

Model: Audi A6 C6, MK 3 - Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Part: Timing belt

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Video tutorial

Replacing the timing belt is not a typical DIY maintenance task because it requires special tools and any mistake during installation could severely damage the engine. That said, in the case of this vehicle, like many from the German manufacturer Volkswagen-Audi, the engine is installed transversely, meaning the timing belt is located at the front rather than the side.

Therefore, to access the timing belt, first remove the bumper, headlights, and detach the grille with the radiator assembly; at this point, remove the protective covers, disconnect the auxiliary belt, take off the crankshaft pulley, and remove the last cover.

Then align the timing marks and hold them in position with the appropriate tools: this step is absolutely critical, and no mistakes must be made.

Next, loosen the timing belt tensioner and remove the belt, replace the water pump, idler pulleys, and tensioner, then install the new belt (usually, the timing belt kit already includes these parts) and tension it, adjusting the tensioner so that the arrow aligns with the reference mark.

After installing the timing belt, install the crankshaft pulley, the new auxiliary belt, reassemble everything, and fill the cooling system with the appropriate antifreeze before starting the engine.


Updated on 15 February 2026 by ScegliAuto


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