"A-Series aluminum. Greater seizure resistance than tri-metal material, Reducing or eliminating bearing wear. Made with silicon to provide greater surface hardness. Silicon particles help polish crankshaft and journals to further reduce wear during operation. " A-Series bi-metal aluminum alloy Greater seizure resistance than tri-metal material Dramatically reduces or eliminates bearing wear Made with silicon to provide greater surface hardness Utilizes ISO & QS certified manufacturing A-Series aluminum Package Dimensions: 3.125 x 1.250 x 2.125 inches Package Weight: 0.17 lb Package Quantity: 1 UPC: 019826113306 Design Feature 1: Standard Size Design Feature 2: Sold in set only Housing Bore Max (Inch): 2.4916 Housing Bore Min: 63.261 MM Housing Bore Min (Inch): 2.4906 Oil Clearance Max (Inch): 0.0029 Oil Clearance Min: 0.013 MM Oil Clearance Min (Inch): 0.0005 Overall Length Max: 20.500 MM Overall Length Max: 20.5 MM Overall Length Max (Inch): 0.8070 Package Alert: Sold in set only Part Material: A-Series aluminum Standard Shaft Max: 58.402 MM Standard Shaft Max (Inch): 2.2993 Standard Shaft Min: 58.377 MM Standard Shaft Min (Inch): 2.2983 Standard Size: Standard Wall thickness Max: 2.426 MM Wall Thickness Max (Inch): 0.0955 Country of Origin: MX