Thread: Bosch vs NGK
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      10-07-2012, 09:59 PM   #10
jacobsed
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Drives: 2006 330xi
Join Date: Feb 2012
Location: United States

Posts: 425
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My dealer put all new plugs in at 90K miles. Today I was changing the oxygen sensors myself and decided to pull the plugs and look at them. My 2006 330xi has 127K miles on it. All the plugs looked fine, nice grey color but they were a mix between NGK and Bosch plugs. There were four BOSCH BMW logo and 2 NGK BMW logo. NGK PLZFR6A11S and BOSCH FR7NPP332. There is only one BMW part number that could be either NGK or BOSCH, so does that mean dealer inventory is a mix between the two brands? I just find it odd they would mix them like that. My car runs great and I'll probably replace them all at 140K miles as preventative maintenance.
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