What is the benefit of the plasma moly coating?

The plasma moly coating on these rings creates a very hard and wear-resistant surface. This helps the rings last longer and reduces friction against the cylinder walls, which can improve engine efficiency and performance.

Can these rings be used in any engine build?

These rings are designed for a specific bore size of 4.565 inches and have a particular thickness and height. They are best suited for engine builds that require these exact specifications, often found in performance or heavy-duty applications. Always verify your engine's requirements.

Why can't these rings be shipped to California?

These piston rings are not CARB (California Air Resources Board) approved. This means they do not meet California's emissions standards, and therefore, cannot be legally shipped to or sold within the state of California.

Mahle OE Piston Rings 4.565in Steel RW Ring Set 3011123B

Name: Mahle Rings Plasma Moly Steel Top Comp Ring 4.565in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-plasma-moly-steel-top-comp-ring-4-565in-x-0625in-190in-rw-r-t14-47563
Price: 850.98 USD
Availability: BackOrder

Mahle Rings Plasma Moly Steel Top Comp Ring 4.565in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)

$850.98

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 steel top compression piston rings. 4.565in bore size, 0.0625in thickness. Bulk pack of 48 rings. Not CARB approved.

Key Features

Fits engines with a 4.565-inch bore diameter.
Top compression ring with a 0.0625-inch thickness and 0.190-inch ring height.
Constructed from durable steel with a plasma moly coating for improved wear resistance and reduced friction.
Bulk pack contains 48 rings, suitable for multiple engine builds or professional shops.
Meets original equipment (OE) specifications for reliable performance.
Not approved for use in California (cannot ship to CA).

Secure CheckoutFast Shipping631-982-0042

Product Details

This is a bulk pack of 48 Mahle OE steel top compression piston rings, designed for a 4.565-inch bore. These rings feature a plasma moly coating for improved durability and reduced friction, which helps them seat properly against the cylinder wall. The 0.0625-inch thickness and 0.190-inch ring height are standard dimensions for many performance and heavy-duty engine builds.

Mahle is a well-known name in engine components, and these rings are built to meet OE specifications. The plasma moly surface treatment is a notable feature, as it creates a very hard, wear-resistant surface that also helps to retain oil. This combination is crucial for maintaining good compression and preventing blow-by, especially in engines that see a lot of use or are built for higher performance. Because this is a bulk pack, it's ideal for engine builders or shops that frequently work on engines requiring this specific ring size.

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 installation procedures and recommended ring gap settings, as these can vary based on the application and intended use of the engine.