What is the purpose of plasma moly steel in piston rings?

Plasma moly steel is used for its strength and resistance to wear. The plasma moly coating further reduces friction between the ring and the cylinder wall, which can help improve oil control and extend the life of both components.

What does the 'RW' in the ring set description refer to?

The 'RW' designation typically refers to the specific groove depth or type that the ring is designed to fit within the piston. It's important to ensure your pistons have the corresponding RW groove specification for proper fitment.

Can this ring set be used in California?

No, this particular ring set is not CARB approved and cannot be shipped to California due to emissions regulations.

Mahle OE Piston Rings 4.385in x .0625in RW Ring Set 3011116B

Name: Mahle Rings Plasma Moly Steel Top Comp Ring 4.385in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-plasma-moly-steel-top-comp-ring-4-385in-x-0625in-190in-rw-r-t14-47577
Price: 709.73 USD
Availability: BackOrder

Mahle Rings Plasma Moly Steel Top Comp Ring 4.385in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)

$709.73

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. 4.385in bore, .0625in thick. Bulk 48-qty pack.

Key Features

Fits engines with a 4.385-inch bore size.
Top compression ring with a .0625-inch thickness.
Designed for the RW ring groove specification.
Constructed from plasma moly steel for strength and wear resistance.
Plasma moly coating helps reduce friction and improve oil control.
Bulk pack includes 48 rings, suitable for multiple engine builds.

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Product Details

When you're rebuilding a high-performance engine or working on a fleet of vehicles that demand reliability, getting the right piston rings is crucial for proper sealing and long-term durability. This bulk pack of Mahle OE Plasma Moly Steel Top Compression Rings is designed for engines with a 4.385-inch bore and features a .0625-inch ring thickness, fitting the RW ring groove specification. Mahle is a well-known name in engine components, and these rings are built to meet the demands of serious engine work.

These top compression rings are constructed from plasma moly steel, a material chosen for its strength and wear resistance. The plasma moly coating helps reduce friction between the ring and the cylinder wall, which can lead to improved oil control and a longer lifespan for both the rings and the cylinder bores. This bulk pack contains 48 rings, making it a practical choice for engine builders, performance shops, or anyone undertaking multiple engine builds. Proper installation is key to ensuring these rings perform as intended, so always refer to your engine's service manual for specific ring gap and installation procedures.

Because these rings are not CARB approved, they cannot be shipped to California. Ensure you check your specific engine application to confirm compatibility with the 4.385-inch bore size and .190-inch ring groove depth before ordering.