MAHLE CLEVITE Coated Performance Main Bearings. All Coated Bearings Are Now "C" Instead Of "K". MAHLE Original Is CLEVITE Bearings The Exclusive CLEVITE TRI - ARMOR Engine Bearings Feature The Industries Only MOLY/ GRAPHITE Treatment. This Sophisticated Blend, In A Low Friction PTFE Polymer Base Offers Extraordinary Protection And Lubricity Enhanced Wear Characteristics Increase Bearing Life In Race Engines And High Performance Street Engines Fits All Chevy Small Block Engines With The Large Journal 2.448" / 2.4493" STANDARD Mains Grooved Upper Half And Plain Non Grooved Lower Half For Crankshafts That Are STANDARD Size Always Measure Your Crank BEFORE Ordering!!
Bearings Are Not Returnable After Opened Or Installed!