When it comes to the Timing Chain on your BMW we make every consideration to get the job done in a timely manner and at a very affordable price you can live with. The timing chain is the connection between the crankshaft and the camshaft. The timing chain is a crucial piece of equipment that, when working properly, causes the valves to open and close at very specific intervals in relation to the position of the pistons for optimum operation of your BMW. At some point your timing chain will need to be replaced. That's where TransMASTER.biz comes in, we have the finest trained technicians that can get the job done right the first time, because when it comes to the performance of your BMW, if it's not done right it can cause serious consequences for your engine.