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When to Replace the Timing Chain on the BMW 3 Series

Model: BMW Serie 3 G20 - Years 2019-2026
Part: Timing belt

The timing belt is a very important mechanical component for vehicle movement. It connects the crankshaft to the camshaft, which in turn is responsible for the movement of the valves and pistons. It is made of a rubbery and elastic material, reinforced with steel parts to withstand the mechanical stresses it is constantly subjected to, which would otherwise cause alterations and damage to its structure. In case of a timing belt failure, the first components to suffer damage are the connecting rods, pistons, and valves. This is because when the belt breaks, it causes misalignment of the two connected shafts, often resulting in irreparable damage. The manufacturer's recommendations for timing belt replacement are typically between 75,000 mi and 112,000 mi, or 6.8 years.

Updated on 1 July 2026 by ScegliAuto

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