10/09/2026
BMW 520d N47 – Timing Chain Replacement
This 520d came in with a rattle on cold start, and on inspection the timing chain was found to be badly stretched.
🔧 Comline timing chain kit fitted – 4 year warranty
🔧 New rocker cover gasket
🔧 New injector seals
🔧 Injector seats cut
🔧 New coolant fl**ge under the intake manifold – a very common issue on N47 & N57 engines
🔧 Fresh engine oil & oil filter
🔧 Everything correctly timed and torqued to Bmw specification
We would normally also replace the oil filter housing gaskets/seals while carrying out this work, as they are prone to leak oil on these engines. However, with this vehicle we were working within the customer’s budget, so this was left for the time being.
📍 DK Tuning
🔧 Repairs • Servicing • Diagnostics • Tuning