What is the benefit of the plasma-moly coating on these rings?

The plasma-moly coating is a very hard and dense layer that significantly improves wear resistance. It also helps reduce friction between the ring and the cylinder wall, which is crucial for performance and longevity in demanding engine applications.

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

HVOF stands for High Velocity Oxygen Fuel. It's a thermal spray process that applies the coating at high speeds, creating a dense, well-bonded layer that is exceptionally durable and resistant to abrasion and heat.

Can these rings be used in any engine build?

These rings are sized for a 4.285 inch bore and are intended for performance applications. While they are a high-quality component, you must verify that these specific dimensions and ring type match your engine's requirements and build specifications. They are not CARB approved and cannot be shipped to California.

Mahle Plasma Steel Top Piston Rings 4.285in x 1.0MM RW HVOF

Name: Mahle Rings Perf Plasma Steel Top Ring 4.285in 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-4-285in-x-1-0mm-143in-rw-hvof-mo-t14-47847
Price: 923.72 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 4.285in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$923.72

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. 4.285in x 1.0MM x .143in. HVOF Moly coating. Part# 3011090B. Not CARB approved.

Key Features

Top piston rings feature a plasma-moly coating applied via HVOF thermal spray for superior hardness and wear resistance.
Each ring measures 4.285 inches in bore diameter.
The top ring thickness is 1.0mm.
The ring groove width is .143 inches.
This is a 48-piece bulk pack, suitable for multiple engine builds.
Mahle OE is a well-known brand in engine components.

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Product Details

The top ring in this Mahle set features a plasma-moly coating applied using HVOF (High Velocity Oxygen Fuel) thermal spray. This advanced coating process creates a dense, well-bonded layer that's incredibly hard and wear-resistant, crucial for the high-stress environment of a performance engine's top compression ring. These rings are specifically sized at 4.285 inches in bore diameter with a 1.0mm thickness and a .143 inch ring groove width, designed for engines that demand precision and durability.

Mahle is a well-known name in engine components, and this set reflects their commitment to performance. The plasma-moly coating not only helps the ring slide smoothly against the cylinder wall, reducing friction and wear, but it also provides a solid sealing surface. This is important for maintaining compression and preventing blow-by, especially in engines built for increased power output. The 48-piece bulk pack is ideal for shops or builders working on multiple engines or those who need a ready supply of high-performance rings.

When rebuilding or modifying an engine, the piston rings are a critical component for sealing the combustion chamber. This Mahle set offers a well-built solution with advanced materials and application-specific sizing. 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 torque specifications.