Spark plug Bosch or Autolite

I found a set that didnt get sent with my car for some reason when i sold it they are worth the money my idle smoothed out with the bosh compared to the autolite 63's

When it was time for my 80K service I used Bosch FR7HPP222 plugs gapped at .040. The current owner is now at 110K and the car is running great.

Good old standard Autolite Coppers work just as well as anything on the market, as long as you replace them every few thousand miles. At $.99 a piece, you can't beat 'em.

For the cars that call for the silvers as the OE plugs, there is no better choice [than the silvers].

about ten years ago, when my Beetle was my DD, I used nothing but Bosch Super (the cheap copper ones) and never had an issue.

They have 2 electrode and yttrium content with copper core. First, the car idle better now than with USED NGK 3 prong spark plug.The idle is lower at 800rpm(new spark plu gap) compared to 920 with NGK (bigger gap) The stock spark plugs were hafl used, white-black color but with some yellow tiny dots on electrode surface whats this ???? I went for a run and these spark plug are not made for high rpm use.. The engine noise is metallic above 4k and it doesnt pull like used but in shape NGK plugs. The spark plug gap is too small I think. I will check my mpg and report this later.

Do not use the Silber plugs. Mileage and performance suffers.

I've had nothing but trouble with the Bosch plugs, from their cheap-o line to their IR Fusion line...

Don't go with Autolite XP iridium. I had on my Jetta and one of the tips basically melted after 25k. They suck.

this summer I switched from oem to platinum bosch plugs and just recently took to dealer and had plugs changed as they said the platinum plugs in fsi engine will cause some fuel to not burn properly.