Supertech Lash Cap 5.5mm Dia 2.5mm Deep 2.25mm Thick

This is a Supertech lash cap, measuring 5.5mm in diameter with a 2.5mm depth and a 2.25mm thickness. Lash caps are small components used in engine rebuilding, specifically when working with the valvetrain. They sit between the valve stem tip and the rocker arm or camshaft lobe, helping to fine-tune the valve lash adjustment. This ensures the correct clearance is maintained for proper engine operation.

When rebuilding an engine, especially one where you've machined the cylinder head or block, or are using aftermarket camshafts, the valve lash might need adjustment. These caps come in various thicknesses, allowing mechanics to achieve the precise clearance specified by the manufacturer. This particular cap has a 2.25mm thickness, which is a common size used in many performance and stock applications to dial in that perfect valve lash.