ACDelco 530-301 Professional Premium Gas Charged Front Shock Absorber<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>A hardened， chromed piston rod with micro cracks provides an ultra-smooth， self-lubricating， corrosion- and scratch-resistant surface， helping increase seal life</li><li>Drawn over mandrel (DOM) pressure cylinder for high quality sealing properties and reduced internal friction to assist with longer product life</li><li>Gas charged for reduced fluid aeration， which can result in better response， less foaming， and more consistent control than non-gas charged shocks</li><li>Full perimeter， multi-lip， piston rod seal is permanently lubricated and helps keep dirt and contaminates from reaching the interior of the rod</li><li>O-ring hydraulic piston seal resulting in minimized piston blow-by and consistent control</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31u0wlHb-RL.jpg" noproxy>