MAHLE S40220.030 Engine Piston Ring Set +0.030" Oversize

The MAHLE S40220.030 is a complete engine piston ring set ground to a +0.030" oversize bore specification, designed for use during engine rebuilds and overhauls where cylinders have been bored or honed to the 0.030" oversize dimension. MAHLE is a globally recognized OEM and aftermarket supplier of engine components trusted by professional engine builders worldwide.

Key Features:

• +0.030" Oversize: Engineered for cylinders bored 0.030" over standard for proper ring-to-wall seal and compression
• Complete Ring Set: Includes all rings required per piston — compression rings and oil control ring assembly
• OEM-Quality Materials: Manufactured to MAHLE's strict dimensional and metallurgical tolerances for durability and performance
• Proper Ring End Gap: Precision ground to ensure correct end gap for reliable sealing and long service life
• Corrosion-Resistant Coatings: Surface treatments help resist wear and reduce break-in time
• Direct Replacement: Designed to meet or exceed original equipment specifications

MAHLE piston rings are engineered and manufactured under the same quality standards used for original equipment supply to major automotive manufacturers. This set is ideal for professional engine rebuilders seeking reliable, consistent results on oversize bore applications.