What is the purpose of the plasma moly coating on these rings?

The plasma moly coating is applied to enhance wear resistance and reduce friction between the piston ring and the cylinder wall. This helps to extend the life of both components and maintain a consistent seal under operating conditions.

What does 'RW Ring Set' mean?

RW typically stands for 'Rectangular Width,' indicating the shape and dimensions of the ring's cross-section. This specific set has a rectangular width profile suitable for many engine designs.

Are these rings suitable for all engine types?

These rings are designed for a 4.280-inch bore and feature a plasma moly coating, making them well-suited for performance and heavy-duty applications. However, always confirm compatibility with your specific engine's service manual for correct sizing and application.

Mahle OE Piston Rings 3011110B - 4.280in

Name: Mahle Rings Plasma Moly Steel Top Comp Ring 4.280in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-plasma-moly-steel-top-comp-ring-4-280in-x-0625in-190in-rw-r-t14-47589
Price: 605.22 USD
Availability: BackOrder

Mahle Rings Plasma Moly Steel Top Comp Ring 4.280in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)

$605.22

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 Moly Steel Top Comp Rings. 48-piece bulk pack for 4.280in bore.

Key Features

Fits a 4.280 inch bore diameter.
Each ring measures 0.0625 inches thick and 0.190 inches deep.
Constructed from durable steel for strength.
Features a plasma moly coating for improved wear resistance and reduced friction.
This is a bulk pack containing 48 top compression rings.
Mahle OE is a trusted brand in engine components.

This is a bulk pack of 48 rings designed for a 4.280 inch bore. Specific vehicle fitment requires consulting your engine's service manual.

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Product Details

This bulk pack gives you 48 Mahle OE Plasma Moly Steel Top Compression Rings, each measuring 4.280 inches in bore diameter, with a 0.0625-inch thickness and a 0.190-inch ring depth. These rings are built for serious engine work, often found in performance builds or when rebuilding a high-mileage engine where precision and durability are key. The plasma moly coating on these steel rings is known for its excellent wear resistance and ability to handle the heat and stress of combustion, helping to maintain a good seal between the piston and cylinder wall.

Mahle is a well-known name in engine components, and these rings reflect that reputation. The steel construction offers strength, while the plasma moly surface treatment is a notable upgrade over plain cast iron, especially in demanding applications. This coating helps reduce friction and wear on both the ring and the cylinder bore, which can lead to improved engine longevity and consistent performance over time. Because these are top compression rings, they play a critical role in sealing the combustion chamber, ensuring that the power generated by your engine is used efficiently.

This is a large quantity pack, ideal for shops or builders working on multiple engines or a large V-configuration engine. It’s important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for proper installation procedures and ring gap specifications to ensure optimal performance and engine health.