MAHLE 3030857 Chrome Piston Ring Set Bore Oil Ring Assembly - 4.025 2.0mm

The MAHLE 3030857 is a premium chrome oil ring assembly designed for high-performance engine builds requiring a 4.025-inch bore diameter. This precision-engineered ring set features a 2.0mm oil ring with a .113-inch radial wall thickness and standard tension characteristics, providing optimal oil control and cylinder sealing in demanding applications.

Key Specifications:

• Bore diameter: 4.025 inches
• Oil ring width: 2.0mm
• Radial wall thickness: .113 inches
• Chrome-plated finish for enhanced wear resistance
• Standard tension design for reliable oil control
• Manufactured to OEM specifications by MAHLE

MAHLE's chrome ring technology delivers superior durability and heat resistance, making this oil ring assembly ideal for street performance, racing, and engine rebuilds where precise tolerances and long-term reliability are essential. The chrome plating provides excellent scuff resistance during break-in and reduces friction for improved engine efficiency.