Moroso 61840 - Piston Installation Tool, 4.030 Inch

Piston Installation Tool 4.030 in. Bore Blue Anodized Aluminum • Designed for fast, easy installation of pistons in most popular bore diameters • Tapered inner diameter of tool compresses piston rings to proper bore size, completley eliminating chances of unseen ring breakage • Made from aluminum with a hard-coat anodized finish for long wear