have a 2003 A6-4.2. Looking to replace the spark plugs but was hoping for some opinions. there are 2 different Bosch plugs I'm considering.

Audi C5 A6 Quattro 4.2 > Engine > Ignition > Spark Plugs > ES#4539 Spark Plug - Set Of Eight (#FGR7KQE0) - FGR7KQEO-8

and

Audi C5 A6 Quattro 4.2 > Engine > Ignition > Spark Plugs > ES#250657 Spark Plugs - Set Of Eight (Platinum+4) - FGR7DQP-8

anybody have any pros or cons with either?

thanks in advance for your help.

steve

 

Personally, I would use the same plugs the factory used.