Clevite CB-1380A.25MM(4) Engine Connecting Rod Bearing Set Designed to be the highest quality replacement aluminum engine bearings available, Clevite Bimetal engine bearings set the standard Relatively harder aluminum alloy wears well, interacts closely with journal surfaces for strength Recommended for use with nodular iron crankshafts Manufactured with 100% bored inside diameters for optimum surface characteristics and consistent precision Manufactured to meet or exceed OE specifications