Cylinder Sleeve (4.020x4.303x6.312)

The MELLING Cylinder Sleeve (4.020x4.303x6.312) is a precision-engineered engine block component designed for serious builders who need reliable bore restoration or block repair on high-performance applications. This cast iron sleeve is ideal for those rebuilding short blocks or replacing damaged cylinder walls, offering the structural integrity and dimensional stability that professional machinists and performance shops depend on.

Manufactured from high-strength cast iron, the sleeve features precise tolerances to ensure proper piston-to-wall clearance and optimal ring sealing. The 4.020-inch inner diameter accommodates standard or oversized piston packages, making it versatile for both street and competition engines. Its 4.303-inch outer diameter and 6.312-inch length are engineered for secure press-fitting into the block while maintaining bore concentricity.

Engine builders, machine shops, and rebuilders tackling small-block engine restorations will benefit from this sleeve, especially when bore damage or wear exceeds honing limits. Proper installation requires precision honing and careful press fitting to achieve the tight tolerance fit that prevents sleeve creep or migration during extended operation.