2011 audi a4 b8 oil pump 100mm hex key

[satys]

Hi,

Recently bought a 2011 B8 2.0tdi 143bhp auto, cars on 135k, I have checked at tos that i have a 100mm hex key fitted. I have read various threads regarding the 77mm hex key and the oil pump failures.

Is it advised to get a new hardened balancer shaft with new key as a preventive measure, or just keep the OEM one as it is.

First Audi so excuse all the questions.

Thanks

 

[jakm15]

All the oil pump failures I've heard of have been on the b7 and really early b8s never heard of any on say 2010 onwards.

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[NHN]

Same here, B7, not heard of B8's.