MAHLE 41940.010 Engine Piston Ring Set +.010 Overbore Complete Set

The MAHLE 41940.010 Piston Ring Set is a complete, OE-quality replacement ring pack engineered for 6.0L diesel engines requiring a +.010" overbore (3.750 in / 95.250 mm bore diameter). This set includes rings for all cylinders and is designed to restore proper compression, minimize blow-by, and reduce oil consumption in rebuilt diesel engines.

MAHLE piston rings are pre-lapped at the factory, allowing them to seat immediately upon installation and virtually eliminating the traditional break-in period. Ring materials, coatings, and tension values are precision-engineered for reduced friction and extended service life.

Key Features:

• Top Ring: Carbon steel construction with Plasma-Moly face coating — 2.3mm axial height; barrel-faced contact surface for efficient compression sealing and CNC-controlled gap chamfer to reduce blow-by
• Second (Intermediate) Ring: Cast iron with iron facing — 2.0mm axial height; reverse-twist design for superior groove side sealing, with taper race machining to maximize contact
• Oil Ring Assembly: CP-20 design — 3.44mm axial height; standard tension with an exclusive 20-degree ear angle for optimal cylinder wall side sealing and a chemically polished expander for enhanced oil drain-back
• Bore Size: +.010" overbore — 3.750 in (95.250 mm)
• File Fit: No — gaps are pre-set; verify end gaps during assembly
• Quantity: Complete engine set — covers all cylinders

Manufactured to OE specifications, the MAHLE 41940.010 ring set delivers factory-level performance and reliability. It is the ideal choice for engine builders performing a bore-over rebuild who demand precision-fit components with professional-grade materials and coatings.