MAHLE is the largest piston ring manufacturer in the world. The MAHLE Original brand (formerly Perfect Circle) is the result of more than a century of experience in light and heavy vehicle piston rings for Original Equipment and Aftermarket applications. Working with a variety of global engine manufacturers gives MAHLE a distinct technological advantage. Innovations like steel compression rings, coated compression rings for diesels plus CP-20® oil rings all evolved from meeting OE challenges. For rebuilders and technicians, MAHLE Original piston rings provide unmatched quality and ease of installation. They are the piston ring of choice.
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