COMPATIBILITY – Fits 2002-2005 Dodge Ram 1500; 2006-2006 Dodge Ram 1500; 2007-2008 Dodge Ram 1500. LONGER SERVICE LIFE — Larger bore and bigger 2-in. BUILT TO LAST — Heavy-duty nitrocarburized rod (non-shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear.