Mahle MS 4.155in 1.0mm 1.0mm 2.0mm Drop In Rings

This is a set of Mahle 4155MS-112D piston rings, designed for universal application in engine builds. These rings feature a specific sizing: 1.0mm for the top ring, 1.0mm for the second ring, and 2.0mm for the oil control ring, all with standard tension. They are a drop-in style, meaning they are intended to fit directly into the piston grooves without requiring extensive modification, making them a popular choice for engine rebuilds where precise ring gap and tension are critical for performance and sealing.

Mahle is known for well-built engine components, and this ring set is no exception. The materials and manufacturing processes are geared towards ensuring a solid seal between the piston and cylinder wall. This is crucial for maintaining compression, controlling oil consumption, and dissipating heat effectively. Proper ring seal directly impacts engine efficiency and longevity, so choosing a reputable brand like Mahle is a smart move for any engine project. The specific dimensions and standard tension are chosen to work well in a wide variety of engine configurations, offering a reliable option for builders.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build requirements and manufacturer specifications to ensure these rings are the correct choice for your application.