What is the purpose of the HVOF Moly coating on these piston rings?

The High Velocity Oxy-Fuel (HVOF) Moly coating creates a very hard and dense surface on the piston ring. This coating helps to reduce friction between the ring and the cylinder wall, which can improve efficiency and reduce wear over time. It also contributes to better oil control.

Are these piston rings suitable for all engine types?

These rings are specifically designed for high-performance engine rebuilding with a 4.255-inch bore. The plasma steel construction and HVOF Moly coating are intended for demanding applications where durability and sealing are critical. Always confirm compatibility with your specific piston and engine build.

What does it mean that this set is a '48 Qty Bulk Pk'?

This means the package contains 48 individual piston rings. This quantity is typically suited for engine builders who are working on multiple engines simultaneously or for high-volume production environments.

Mahle Plasma Steel Piston Rings 3011084B

Name: Mahle Rings Perf Plasma Steel Top Ring 4.255in 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-4-255in-x-1-0mm-143in-rw-hvof-mo-t14-47859
Price: 738.69 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 4.255in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$738.69

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. 4.255in bore, 1.0mm width. HVOF Moly coating. Bulk pack of 48.

Key Features

Fits 4.255 inch bore engines.
Top ring width is 1.0mm.
Ring depth is 0.143 inches.
Plasma steel construction offers strong wear resistance.
HVOF Moly coating reduces friction and cylinder wall wear.
Bulk pack includes 48 rings for multiple engine builds.

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Product Details

When you're rebuilding the top end of a high-performance engine, the piston rings are a critical component. These Mahle OE Plasma Steel Top Rings are built for demanding applications where precise sealing and durability are paramount. They feature a 4.255-inch bore size, a 1.0mm top ring width, and a 0.143-inch ring depth, designed to work with specific piston configurations.

The plasma-sprayed steel construction offers excellent wear resistance, especially important in high-heat and high-stress environments. This is further enhanced by the High Velocity Oxy-Fuel (HVOF) Moly coating, which provides a tough, low-friction surface that helps reduce cylinder wall wear and improve oil control. This bulk pack contains 48 rings, making it a practical choice for engine builders working on multiple units or high-volume projects. Mahle is a well-known name in engine components, and these rings reflect their commitment to performance and reliability.

For optimal performance and longevity, ensure these rings are installed according to the piston manufacturer's specifications. Proper ring gap and tension are crucial for achieving good compression and preventing blow-by. This set is intended for professional engine rebuilding and is not CARB approved, meaning it cannot be shipped to California.