CP 3.0mm .150 Radial Wall Low Tension Flex Vent Oil Ring 4.000 bore

This CP Pistons 3.0mm oil ring features a 0.150 radial wall and low tension design, specifically made for a 4.000 inch bore. The flex vent design helps ensure a good seal against the cylinder wall, which is crucial for controlling oil consumption and maintaining proper crankcase pressure. This type of oil ring is often chosen when rebuilding an engine where precise oil control is a priority, especially in applications that might see higher RPMs or varied operating conditions. The low tension aspect means it exerts less pressure on the cylinder walls, which can lead to reduced friction and potentially longer ring and cylinder life compared to higher tension rings. It's a well-built component designed to work within the demanding environment of an internal combustion engine.

When you're putting an engine back together, especially if you're aiming for optimal performance and reliability, the details matter. This oil ring is a good example of that. The radial wall thickness and the flex vent are specific design choices that contribute to its function. It’s important to note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper seating and break-in procedures to get the most out of this component.