Eagle C4103S - Eagle 4-Bolt Billet Main Caps

''ESP'' alloy steel main caps offer superb strength at a reasonable cost. Improves performance and reliability by eliminating main cap walk and reducing main bearing bore distortion. Fits Chevrolet 2-bolt Blocks. Includes Drill Bushing, & Main Caps.
Note: Block must be drilled for four bolt conversion and line bored after main cap installation.