MAHLE 40906.040 Engine Piston Ring Set Oversize - 0.040

The MAHLE 40906.040 is a professional-grade engine piston ring set ground to a +0.040" oversize specification, designed for use during engine rebuilds and overhaul applications where cylinder bores have been machined to the first standard overbore. MAHLE is a globally recognized OEM and aftermarket supplier of precision engine components trusted by professional engine builders worldwide.

Key Features:

• +0.040" Oversize – engineered to match freshly bored or honed cylinders at the first standard oversize
• Manufactured to OEM tolerances for proper ring-to-groove fit, end gap, and radial depth
• Multi-piece ring set typically includes compression rings and oil control ring assembly per cylinder
• Premium materials provide excellent wear resistance, heat dissipation, and oil control
• MAHLE OEM-level quality ensures consistent sealing and long service life
• Designed for professional engine rebuilders and performance machine shops

MAHLE piston ring sets are engineered to restore proper compression, minimize oil consumption, and deliver reliable performance in rebuilt engines. The 40906.040 ring set meets or exceeds original equipment specifications, making it a preferred choice for engine rebuild and machine shop applications.