More and more manufacturers have shifted to aluminum bearings in their OE engines and Clevite AL-Series rod bearings are designed to be the highest-quality replacement bearings in the industry. They carry on the tradition and reputation that Clevite has built throughout the course of time. AL Series engine bearings feature a 100 percent lead-free aluminum silicon bi-metal material, which includes 60 percent more silicon than the leading competitor's bi-metal material for better conditioning of journal surfaces. These bi-metal bearings also offer greater wear resistance than the leading competitor's bi-metal material, as well as greater seizure resistance. Clevite AL-Series bearings feature 100 percent bored inside diameters for precision and surface characteristics and, where appropriate, straight-shell main bearings utilizing an "umbrella" groove that allows for superior oil control and improved pressure.