Clevite SH-1321S Engine Camshaft Bearing Set 100% machined surface design provides the tightest tolerances in the industry. Increasedsystem design flexibility. Constructed of seamless steel tube with a thin layer of lead based Babbitt material. Seamless construction makes installation easy, eliminating breakage and bearing surface interruptions. Lead based Babbitt provides ideal properties for nearly all engine applications. Superior embed ability, conformability, and anti-seizure characteristics have proven to reduce engine failures Manufactured to meet or exceed OE specifications