MAHLE 50277.040 Engine Piston Ring Set Oversize - 0.040

The MAHLE 50277.040 Engine Piston Ring Set is a standard replacement piston ring set manufactured to a +0.040" overbore specification, designed for use during engine rebuilds requiring a first oversize bore. MAHLE, formerly marketed under the Perfect Circle brand, is the world's largest manufacturer of piston rings and brings extensive OEM engineering expertise to every aftermarket set.

Key Features:

• +0.040" Oversize — engineered for cylinders bored 0.040" over standard diameter
• High tensile and yield strength with excellent hardness and low ring mass for stress resistance and minimal groove pound-out
• Optimized ring tension and coatings for reduced friction, extended service life, and excellent cylinder wall conformability
• Barrel-faced compression ring contact area for efficient compression sealing and reduced blow-by
• Low-tension oil control rings for improved oil economy and effective cylinder wall scraping
• OEM-derived technology including narrow compression rings and coated ring faces developed from original equipment applications
• Provides good blow-by control and oil economy throughout the engine's service life

The MAHLE 50277.040 ring set is an ideal choice for engine rebuilders performing a standard first overbore. MAHLE's OE-level engineering and manufacturing precision ensure a reliable, long-lasting seal that meets or exceeds original factory specifications.