What is the benefit of the plasma-moly coating?

The plasma-moly coating significantly improves wear resistance and reduces friction between the piston ring and the cylinder wall. This helps maintain a proper seal and prevents blow-by, contributing to better engine performance and longevity.

What does 'HVOF' mean in relation to the coating?

HVOF stands for High Velocity Oxygen Fuel. It's a thermal spray process used to apply the plasma-moly coating, creating a dense and well-bonded layer that is highly durable and resistant to wear.

What are the dimensions of these rings?

These top rings are designed for a 4.050-inch bore diameter. They have a thickness of 1.0mm and are intended for a 0.143-inch ring groove width.

Mahle OE Piston Rings 3011095B - 4.050in Bore

Name: Mahle Rings Perf Plasma Steel Top Ring 4.050in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-plasma-steel-top-ring-4-050in-x-1-0mm-143in-rw-hvof-mo-t14-47921
Price: 632.76 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 4.050in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$632.76

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle OE plasma steel top piston rings for 4.050in bores. Features HVOF Moly coating for improved durability. Bulk pack of 48.

Key Features

Top ring features plasma-moly coating applied via HVOF thermal spray for enhanced wear resistance.
Steel construction provides strength and resilience for demanding engine conditions.
Each ring measures 4.050 inches in bore diameter.
Ring thickness is 1.0mm with a 0.143-inch groove width.
Bulk pack includes 48 rings, suitable for engine builders working on multiple projects.
Designed for precise fitment in compatible pistons.

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Product Details

The top ring in this Mahle piston ring set features a plasma-moly coating applied using High Velocity Oxygen Fuel (HVOF) thermal spray. This advanced coating process creates a dense, well-bonded layer that significantly improves wear resistance and reduces friction between the ring and the cylinder wall. This is crucial for maintaining proper seal and preventing blow-by, especially in high-performance or heavy-duty applications where cylinder pressures are elevated.

Each ring measures 4.050 inches in bore diameter with a 1.0mm thickness and a 0.143-inch ring groove width, designed for precise fitment in compatible pistons. The steel construction offers good strength and resilience, while the plasma-moly coating ensures longevity and consistent performance over time. This bulk pack contains 48 rings, making it a practical choice for engine builders working on multiple engines or for those undertaking a large project.

Proper installation is key to realizing the benefits of these rings. Ensure your cylinder bores are honed to the correct finish and that the ring gaps are set according to the manufacturer's specifications for your specific engine build. This attention to detail will help ensure a solid seal and optimal engine performance.