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How many kilometers does the BMW 3 Series fuel filter need to be replaced?

1 Answers

DeMaya

07/30/25 8:30am

The replacement interval for the BMW 3 Series fuel filter is generally around 10,000 kilometers. The specific replacement time can be referred to the instructions in the vehicle's user manual. Typically, the fuel filter is replaced during major maintenance of the car, along with the air filter and oil filter. The gasoline filter usually has only one stage, installed between the fuel tank and fuel pump or between the fuel pump and carburetor. Since the diesel engine supply system has three precision components that require higher cleanliness of diesel fuel, and diesel contains higher levels of gum, diesel filters generally have two or more stages to improve filtration efficiency. They are divided into diesel coarse and fine filters, also known as water separators and diesel fine filters, installed between the diesel tank and fuel transfer pump, and between the fuel transfer pump and injection pump, respectively. Some diesel engines are also equipped with sediment bowls to settle water and impurities in the diesel fuel.

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