Plugs for m50, s50 m52 & s52 Turbo engines.
Torque Specs: Aluminum: 18-21.6 lb. ft.
Set Gap to: .023" or no tighther than .018"
Heat Range: 7
NON resistor plug
Sold as a pack of 6
This is our number one plug recommendation for turbo M50, M52, S50 and S52 builds. It is an 7 heat range plug with a nickel center electrode. They offer decent milage and are the correct type of plug to be used with the stock BMW coil packs.
What about Iridium Spark Plugs?
Iridium is a super dense material and therefore extremely resistant to wear. That's it! It is a terrible thermal conductor and a bad electrical conductor, so why would anyone use it to make a spark plug center electrode? Since car manufacturers have to guarantee that their engines stay in-tune sometimes for as much as 100,000 miles, they can only achieve this with ultra dense Iridium or Platinum plugs.