Repl Cyl Sleeve SBC Bow Tie Block 4.120 Bore

The Darton Sleeves Replacement Cylinder Sleeve for Small Block Chevy Bow Tie Block (4.120 bore) is a precision-engineered component designed to restore cylinder integrity and extend engine life in small block applications. This replacement cylinder sleeve features a 4.120-inch bore diameter, making it an essential part for engine rebuilds and restorations.

Manufactured from high-quality steel, this sleeve is engineered to withstand the pressures and thermal cycles inherent to internal combustion engines. The outer diameter is 4.272 inches, and the wall thickness is 0.076 inches, ensuring durability and performance. The design accommodates the bore geometry of small block Chevy engines, while tight tolerances ensure proper piston-to-cylinder wall clearance.

Engine builders and performance enthusiasts rely on quality replacement sleeves to recondition worn or damaged cylinders without full block replacement. This Darton sleeve is suited for applications ranging from stock rebuilds to performance engine builds, where maximum bore diameter is retained. It is particularly beneficial for those restoring classic muscle cars or rebuilding work trucks.