NGK Iridium Laser IZKR7B Spark Plug (VAG 3.2L)NGK Iridium Laser IZKR7B Spark Plug Specifications Whatever your use or engine set up the correct choice of spark plug is very important. Iridium is very heavy and dense metal ensuring that NGK spark plugs have a longer lifespan than OEM ones withstanding more than 100. 000 km in standard use Compatible with Non exhaustive list. Audi A3 Quattro (2006 2010) Audi TT Quattro (2004 2010) Porsche Cayenne 3. 2 (2004 2007) Volkswagen Eos VR6 (2007 2009)