Mahle Rings Perf Plasma Steel Top Ring 4.105in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

Mahle is a well-known name in the automotive world, especially for their engine components. They're recognized for making parts that meet or exceed original equipment standards. This set of performance plasma steel top piston rings, part number 3011133B, is a prime example of their commitment to engine building quality. These rings are designed for engines with a 4.105-inch bore, featuring a 1.0mm top ring thickness and a 0.143-inch oil ring groove. The plasma-sprayed steel construction offers improved durability and wear resistance compared to cast iron, making them a solid choice for performance applications or engine rebuilds where reliability is key.

The plasma coating on these top rings is applied using a High-Velocity Oxygen Fuel (HVOF) process, which creates a dense, well-bonded layer of molybdenum. This advanced surface treatment helps reduce friction between the piston ring and cylinder wall, contributing to better oil control and a more efficient seal. This is crucial for maintaining compression and preventing blow-by, especially in high-performance engines. This bulk pack contains 48 rings, making it ideal for shops or builders working on multiple engines or larger projects. While these are performance-oriented rings, they are built to Mahle's OE standards, meaning they are well-made and intended for long service life when installed correctly.

When undertaking an engine rebuild, especially one focused on performance or restoring an engine to its peak condition, using quality piston rings is essential. These Mahle rings are a strong option for ensuring a proper seal between the piston and cylinder wall. Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for installation procedures and recommended clearances.