The denso iridium spark plug for ktm adventure 640 r 2002-2004 is part of the latest collection from denso.Features: six times harder than platinum, iridium withstands temperatures up to 4,000â f because the iridium electrodes of these plugs can be shrunk to only 0.4Mm, voltage requirements decrease while firing performance improves 360â laser welding of electrode provides a seal that resists wear even in the worst conditions ground electrode features a tapered cut and u-groove that form a large volume area for the flame's center specifications: center electrode projection: projected center electrode type: fine wire electrical resistance: 5k ohms electrode tip material: iridium ground electrode shape: grooved taper cut heat range: 8 hex size imperial: 11 16 hex size metric: 17.5 Mm hex size: 17.5 Mm 11 16 model: ix24b product name: spark plug research value: finalized to fit: benelli caffenero 250 2008 european models benelli caffenero 250 2009 european models benelli caffenero 250 2010 european models benelli caffenero 250 2012 european models benelli caffenero 250 2013 european models benelli caffenero 250 2014 european models beta jonathan 350 2003 european models beta jonathan 350 2004 european models beta jonathan 350 2005 european models beta jonathan 350 2006 european models bmw k1 1988 european models bmw k1 1989 all models bmw k1 1990 all models bmw k1 1991 all models bmw k1 1992 all models bmw k1 1993 european models bmw k 100 lt 1986 all models bmw k 100 lt 198...