Cylinder Sleeve 4.400 Bore 4.370 ID 4.590 OD

The Cylinder Sleeve 4.400 Bore 4.370 ID 4.590 OD by Melling is a precision-engineered engine component designed for serious engine rebuilding and performance restoration. If you're undertaking a complete engine overhaul, block boring, or salvaging a worn cylinder wall, this sleeve is the proven solution that restores bore integrity to original specifications.

Built by Melling—an OEM-trusted manufacturer with decades of engine rebuilding heritage—this cylinder sleeve features a 4.400-inch bore diameter with a 4.370-inch inner diameter and 4.590-inch outer diameter. The precision ID-to-OD relationship ensures a tight interference fit during installation, preventing coolant bypass and maintaining proper ring seal under peak combustion pressures. Melling's manufacturing process delivers concentricity tolerances and surface finishes that exceed most performance and stock rebuild requirements.

Mechanics and engine builders rely on this sleeve when bore diameter grows beyond standard oversize limits or when conventional honing and boring options are limited. The substantial cast-iron construction absorbs thermal cycling stress and maintains dimensional stability across extended load ranges. This cylinder sleeve is an essential component for anyone looking to enhance the performance and reliability of small-block engines.