Oxygen sensors: how many to replace

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I own BMW X3 3.0si (2007). Its mileage is 125,000. Do I need to replace oxygen sensors (there are no "check engine" alarms) ? How many of them BMW X3 has? Does it make sense to replace partially, say upstream only? Is there a part number to look for, should I search for parts via Internet?

Visitor

in Lakewood NJ

May 4, 2022

What are the best BMW repair shops?

RepairPal Certified shops can diagnose and repair your 2007 BMW X3. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

Oxygen sensors: how many to replace

What is your question?

Visitor

in Lakewood NJ

May 4, 2022

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What are the best BMW repair shops?

RepairPal Certified shops can diagnose and repair your 2007 BMW X3. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.