MAHLE 42140.020 Original Engine Piston Ring Set

The MAHLE Original 42140.020 is a precision-engineered engine piston ring set designed to restore proper cylinder sealing, oil control, and compression in worn or rebuilt engines. MAHLE Original piston rings are manufactured to OEM-equivalent specifications, ensuring a reliable, long-lasting fit for professional engine rebuilders and performance enthusiasts alike.

Key Features:

• OEM-quality construction meeting or exceeding original manufacturer tolerances
• Precision surface finishing for optimal ring-to-bore seating and break-in
• Engineered for proper compression sealing, oil control, and heat transfer
• Manufactured from high-grade cast iron or steel alloy depending on ring position
• Includes compression rings and oil control ring assembly for a complete set
• Oversize bore designation: .020" — designed for cylinders bored 0.020" over standard
• Designed and validated to MAHLE Original engineering standards

MAHLE is a globally recognized OEM supplier to major automotive manufacturers, and their Original line brings that same engineering precision to the replacement parts market. The .020 oversize designation makes this set ideal for engine rebuilds where cylinders have been bored to the first standard oversize to correct wear or damage.