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Hi all, I've recently bought an early 2015 F21 116d, with the N47 engine. The timing chain had recently broken, for the previous owner, and the engine was repaired and is running sweetly. That's why I went ahead and bought it, because my reasoning is that if there was a new timing chain put in then the car should be as good as new. I'm just wondering are there any differences with replacement chains, from the originals, which would make them more reliable or are they just the same and could break eventually again? Also, I've just realised the other day that the AC is not working at all (bad timing), maybe there was something touched when the engine was being repaired which caused this. Bimmercode is showing an error with the air con module.
Any advice would be appreciated.

Thanks
 

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Very few of these chains actually break on the grand scale. But having no idea what parts were put in to yours (genuine BMW / original supplier / chinese special) it's very speculative to say how long the next one will last. More frequent oil changes than manufacturers specifications seems to be key. Personally I've gone for annually or 10,000 miles, and I've not had any issues.
 

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With all of our cars, we go for a 5,000 mile oil service interval as a rule of thumb. But yes, your new chain can snap just as the old one did - there's no certainty just because it's been replaced.
 
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