MAHLE 42090CP.040 Premium Plasma-Moly Engine Piston Ring Set Oversize - 0.040

The MAHLE 42090CP.040 is a complete engine piston ring set manufactured to OEM specifications, featuring a +0.040" (1.0mm) oversize bore dimension for use during engine rebuilds where cylinders have been bored or honed to accept oversized pistons.

MAHLE is a globally recognized OEM supplier trusted by major automakers and professional engine builders alike. This piston ring set is engineered to deliver precise fitment, optimal sealing, and long-term durability consistent with original factory performance standards.

Key Features:

• +0.040" oversize — designed for bored or honed cylinders requiring oversize rings
• Manufactured to OEM tolerances for precise gap clearances and ring tension
• Includes compression rings and oil control ring(s) for a complete service set
• High-quality materials for superior wear resistance and heat management
• Engineered to restore proper compression, reduce oil consumption, and improve engine efficiency
• Produced by MAHLE, a premier OEM supplier to major global vehicle manufacturers

This ring set is the correct choice for engine rebuilders seeking factory-grade components at competitive value. Always verify cylinder bore diameter and confirm ring gap clearances during installation per engine manufacturer specifications.