MAHLE 41556.020 Engine Piston Ring Set - 0.020 in. Oversize

The MAHLE 41556.020 is a premium original-equipment-quality engine piston ring set sized at 0.020 inches oversize, designed for engine rebuilds requiring a slightly larger bore fit. MAHLE is the world's largest manufacturer of piston rings, supplying both OEM and aftermarket applications with the same precision engineering trusted by vehicle manufacturers.

Key Features:

• 0.020 in. Oversize — engineered for bores that have been machined 0.020 in. over standard for proper wall-to-ring contact and sealing
• Pre-lapped rings — seat immediately upon startup, virtually eliminating traditional break-in time
• Optimized ring materials and coatings — ring tension, facing material, and surface finish are all application-specific for reduced friction and extended service life
• Compression ring design — barrel-faced contact surface promotes efficient compression seal; CNC-controlled gap chamfer minimizes blow-by
• Intermediate ring — reverse twist geometry improves groove side sealing; taper-face machining enhances cylinder wall contact
• Oil control ring assembly — stainless steel construction with chrome-faced rails; expander provides consistent radial tension for superior oil film management
• Meets or exceeds OEM specifications — restores compression, controls oil consumption, and reduces combustion blow-by

The MAHLE 41556.020 piston ring set is the ideal solution for engine rebuilders who demand OE-level fit and performance. Each set includes rings for a complete cylinder complement, making it suitable for full engine overhaul applications.