The denso iridium spark plug for sherco 2.5 250 I 2005-2008 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: non-projected center electrode type: fine wire electrical resistance: 5k ohms electrode tip material: iridium ground electrode shape: angled heat range: 24 hex size imperial: 5 8 hex size metric: 16 mm hex size: 16 mm 5 8 model: iu24a product name: spark plug research value: finalized to fit: aprilia atlantic 300 i.E. 2011 European models aprilia atlantic 300 i.E. 2012 European models aprilia atlantic 300 i.E. 2013 European models aprilia atlantic 500 2002 all models aprilia atlantic 500 2003 all models aprilia atlantic 500 2005 sprint european models aprilia atlantic 500 2006 sprint european models aprilia atlantic 500 2007 sprint european models aprilia atlantic 500 2008 sprint european models aprilia atlantic 500 2009 sprint european models aprilia atlantic 500 2010 sprint european models aprilia caponord 1200 abs 2013 travel pack european models aprilia caponord 1200 abs 2013 european models aprilia c...