There is a two-year warranty on all Original BMW Parts including labour costs. Quality requirements and manufacturing tolerances of Original BMW Parts are generally stricter than those of generic parts, even generic parts provided by the same supplier. In addition, all BMW maintenance intervals are based on the lifetime of Original BMW Parts.
Examples:
Air filters: many generic air filters are designed to last one year, BMW air filters two years. The BMW maintenance intervals are based on the lifetime of original BMW air filters.
Windscreen wipers: the curvature of the original BMW wipers perfectly matches the windscreen of the model in question. Generic wipers are not a perfect fit because they are designed for several different brands and models (the number of compatible models is indicated on the box of generic windscreen wipers).
Brakes: The high-quality Original BMW brake pads are perfectly matched to your BMW due to their special brake pad mixture. This guarantees excellent braking performance and maximum safety.