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

The plasma-moly coating is applied to reduce friction between the piston ring and the cylinder wall. This helps the rings seat properly, minimizes wear, and contributes to better oil control and overall engine efficiency.

Why are these rings sold in a bulk pack of 48?

This bulk pack is designed for engine builders, performance shops, or those working on multiple engines. It offers a convenient way to have a sufficient quantity of high-quality rings on hand for various projects or specific engine configurations.

Can these rings be used in any engine build?

These rings are specific to engines with a 4.255-inch bore and a 0.0625-inch ring thickness. Always verify your engine's specifications and consult your service manual to ensure these rings are the correct fit for your particular application.

Mahle Piston Rings 3011109B - 4.255in Bore

Name: Mahle Rings Plasma Moly Steel Top Comp Ring 4.255in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-plasma-moly-steel-top-comp-ring-4-255in-x-0625in-190in-rw-r-t14-47591
Price: 730.92 USD
Availability: BackOrder

Mahle Rings Plasma Moly Steel Top Comp Ring 4.255in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)

$730.92

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 Compression Rings for engine builds. 4.255in bore size, 0.0625in thickness. Bulk 48-piece pack.

Key Features

Fits engines with a 4.255 inch bore size.
Top compression ring with a 0.0625 inch thickness.
Features a plasma-moly coating for reduced friction and wear.
Constructed from durable steel for long-lasting performance.
Bulk pack includes 48 rings, ideal for engine shops or multiple builds.
Mahle OE quality for reliable engine component replacement.

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Product Details

When you're rebuilding an engine, especially one that's going to see a lot of miles or demanding use, the piston rings are a critical component. They seal the combustion chamber, control oil consumption, and transfer heat to the cylinder wall. Mahle's Plasma Moly steel top compression rings are a popular choice for engine builders who need reliable performance and durability.

These rings are made from steel and feature a plasma-moly coating. This coating is known for its ability to reduce friction and wear, which helps the rings seat properly against the cylinder walls and maintain a good seal over time. The 4.255-inch bore size and 0.0625-inch thickness are specific dimensions for certain engine builds, ensuring a precise fit. This bulk pack contains 48 rings, making it a practical option for shops or for builders working on multiple engines or performance builds where custom setups are common.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine's service manual for proper installation procedures and ring gap specifications to ensure optimal performance and longevity of your rebuild.