Car is 2007 730ld 3.0 diesel 231 bhp
History will be .
Dpf/egr/cooler delete .swirl flaps delete .
Remap
So need to do timing chains at same time so
M57n timing chain .apart from checking for obvious signs of wear .is their a need to change the lower oil pump chain also is their a need to change the crankshaft ,fuel pump and camshaft sprockets too .or just 2 chains .tensioner and all guides .

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