MAHLE 4055MS-112D 4.055" Bore Piston Ring Set 1.0mm 1.0mm 2.0mm

The MAHLE 4055MS-112D is a premium drop-in piston ring set engineered for 4.055-inch bore engines. This three-piece ring set features metric ring widths of 1.0mm for the top compression ring, 1.0mm for the second compression ring, and 2.0mm for the oil control ring.

Key Features:

• Precision-machined for 4.055-inch cylinder bore diameter
• Metric ring configuration: 1.0mm / 1.0mm / 2.0mm
• Drop-in design for simplified installation
• MAHLE OE-quality materials and manufacturing standards
• Advanced ring profiles for optimal compression sealing
• Low-friction coatings reduce wear and improve efficiency

MAHLE piston rings are manufactured to exacting tolerances using high-grade materials that ensure proper cylinder sealing, reduced blow-by, and optimal oil control. The 112D designation indicates specific ring design characteristics suited for performance and racing applications. Each ring is precision-ground and finished to provide excellent conformability to cylinder walls while maintaining durability under demanding conditions.