Repl Cyl Sleeve LS1/LS6 3.890 Bore 4.180 OD

The Darton Sleeves Replacement Cylinder Sleeve LS1/LS6 (Part No. 300-024) is a precision-engineered component designed specifically for GM LS-series engine blocks. This 3.890-inch bore, 4.180-inch OD sleeve provides OEM-quality restoration and performance enhancement for LS1 and LS6 engine builds. It is an ideal solution for engine builders looking to restore worn or damaged cylinder bores.

Manufactured from high-quality steel, this sleeve ensures proper bore geometry and ring seal integrity for both stock and modified engine applications. A properly installed sleeve can eliminate bore runout and taper that develops in high-mileage engines, effectively restoring compression, reducing blow-by, and improving oil control. The robust construction withstands the thermal cycling and combustion pressures inherent in both naturally aspirated and boosted LS applications.

This Darton sleeve is particularly beneficial for LS engine enthusiasts performing top-end rebuilds or preparing a block for turbocharging or supercharging. It allows for addressing cylinder wear without the need for full machine work, making it a cost-effective alternative to complete block replacement. Whether you're restoring a classic vehicle with an LS swap or building a high-performance street or race motor, this sleeve is designed to meet your needs.