What is plasma moly coating?

Plasma moly coating is a surface treatment applied to piston rings. It's known for its hardness and low friction properties, which helps reduce wear and improve the ring's lifespan, especially in high-performance applications.

What does the HV385 designation mean?

The HV385 designation refers to a specific material composition and ring profile developed by Mahle for enhanced performance and durability in demanding engine conditions. It's a performance-oriented specification.

Can these rings be used in any engine rebuild?

These rings are specifically designed for performance applications and have dimensions suitable for certain engines. Always consult your engine's service manual to ensure these rings meet the required specifications for your rebuild, including proper ring gap settings.

Mahle OE Piston Rings 3011220 - Performance Plasma Moly

Name: Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 3.189in x 1.0MM .143in RW Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-performance-plasma-moly-steel-hv385-top-ring-3-189in-x-1-0m-t14-48087
Price: 77.40 USD
Availability: BackOrder

Mahle Rings Performance Plasma Moly Steel HV385 Top Ring 3.189in x 1.0MM .143in RW Moly Ring Set

$77.40

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 Piston Rings for performance builds. Features plasma moly top rings for improved durability.

Key Features

Fits various engines; check manufacturer fitment data for compatibility.
Top ring features a plasma moly coating for improved durability and reduced friction.
Ring dimensions are 3.189 inches in diameter, 1.0mm thick, and 0.143 inches in height.
Mahle OE part number 3011220.
Designed for performance engine builds.
Not CARB approved; cannot ship to California.

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Product Details

These Mahle OE piston rings feature a plasma moly top ring, measuring 3.189 inches in diameter with a 1.0mm thickness and a 0.143-inch ring height. This specific design choice is important for engines that see higher performance demands, as the plasma moly coating on the top ring helps reduce friction and wear, especially under increased cylinder pressures. They are well-built to handle the rigors of performance applications.

The HV385 designation indicates a specific profile and material composition Mahle uses for enhanced performance and longevity. When you're rebuilding an engine for more power or just want a more robust replacement for a worn-out set, these rings offer a solid option. They are designed to create a good seal between the piston and cylinder wall, which is critical for maintaining compression and preventing oil from entering the combustion chamber.

Keep in mind 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 proper ring gap settings.