Spark Plug which brand?
 

hey guys, i need to change the Spark Plug for my car 2006 x5 3.0
i searched on ebay and there was 2 brand "Denso" and "NGK"
which one is better fitting? or does not matter?
thank you

NGK

Or you might want to remove one of the plugs from your engine to see what the factory installed, and go with that type.

the price range is so different. like $30 to $180 and was just wondering expensive one makes better quality?

There are a lot of myths and folklore associated with spark plugs; my impression is that factors ascribed to spark plug brand and type (smoothness, fuel economy, power, etc.) are usually caused by something else. I've heard there is a web site (sparkplugs.com?) that does a good job of explaining the pros and cons of the different types of plugs. You might want to do a search to get some general information to help guide your decision as to type and brand. Good luck.

thank you! for the info ill do some research

Stick with factory NGK or Bosch from your BMW dealers

^ that's what I did. NGK BKR6EQUP for both my e39 and e53.

price range??

^ about $8 ea. NGK BKR6EQUP