MAHLE 41866CP.040 Engine Piston Ring Set Oversize - 0.040

The MAHLE 41866CP.040 is a complete engine piston ring set engineered for reliable performance in demanding rebuild applications. Designed to +0.040" (1.0mm) oversize bore specifications, this ring set is intended for use during engine rebuilds where cylinders have been bored or honed to the standard first oversize. MAHLE is a globally recognized OEM and aftermarket supplier, manufacturing piston rings to strict dimensional and metallurgical tolerances.

Key Features:

• +0.040" Oversize — engineered for cylinders bored to the first standard oversize for proper fitment and sealing
• Chrome-plated top compression ring ("CP" designation) for enhanced wear resistance and extended service life
• Complete set includes top compression ring, second compression ring, and oil control ring assembly per cylinder
• Manufactured to OEM-equivalent tolerances for proper ring end gap, radial depth, and axial height
• Engineered for correct tension and seal against the cylinder wall to minimize oil consumption and blow-by
• Meets or exceeds original equipment specifications for compression retention and oil control

MAHLE piston ring sets are a trusted choice for professional engine builders and machine shops. The 41866CP.040 is a direct replacement ring set suited for engine overhaul and performance rebuilds requiring the +0.040" oversize specification.