What is the purpose of the plasma moly coating on the top ring?

The plasma moly coating on the top ring is applied to reduce friction between the ring and the cylinder wall. This helps to minimize wear over time, contributing to a longer lifespan for the rings and the engine.

What does 'ductile iron' mean for the top ring?

Ductile iron is a type of cast iron that has improved strength and toughness compared to standard gray iron. This makes the top ring more resilient to the stresses of combustion and piston movement.

Can this ring set be shipped to California?

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

Mahle OE Piston Ring Set 3000650B

Name: Mahle Rings 4.875in Bore dia .0935in EW Ductile Plasma Moly Top Ring Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-875in-bore-dia-0935in-ew-ductile-plasma-moly-top-ring-rin-t14-50777
Price: 1836.13 USD
Availability: BackOrder

Mahle Rings 4.875in Bore dia .0935in EW Ductile Plasma Moly Top Ring Ring Set (48 Qty Bulk Pack)

$1836.13

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 4.875in bore piston ring set with ductile plasma moly top rings. Bulk 48-qty pack.

Key Features

Fits 4.875 inch bore diameter engines.
Features a .0935 inch wide top ring.
Top ring is constructed from ductile iron for strength.
Plasma moly coating on the top ring helps reduce friction and wear.
Bulk pack includes 48 individual ring sets for multiple engine builds.
Mahle OE part number 3000650B.

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Product Details

Mahle is a well-known name in the automotive industry, particularly for their expertise in engine components. This bulk pack of piston rings, part number 3000650B, is designed for a 4.875-inch bore diameter and features a .0935-inch wide ductile iron top ring with a plasma moly coating. This combination is built for durability and performance in demanding engine builds.

The ductile iron construction of the top ring offers good strength and resilience, while the plasma moly coating is applied to reduce friction and wear. This is crucial for maintaining a good seal between the piston and cylinder wall, which directly impacts engine compression, oil control, and overall efficiency. This particular set is a bulk pack containing 48 individual ring sets, making it suitable for engine builders or shops working on multiple engines or large projects.

When rebuilding an engine, the piston rings are a critical component for proper cylinder sealing and oil management. This Mahle OE set is intended for professional engine rebuilding applications where precise fitment and reliable performance are essential. Please note that this product is not CARB approved and cannot be shipped to California.