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

The plasma-moly face is applied to the top ring to enhance durability and reduce friction. This coating helps to minimize wear on both the ring and the cylinder wall, contributing to a longer engine life and more consistent performance.

What does 'ductile iron' mean for these rings?

Ductile iron is a type of cast iron that has more flexibility and toughness than standard gray cast iron. This makes it a strong and reliable base material for piston rings, able to withstand the stresses of engine operation.

Can these rings be used in any engine build?

These rings are designed for engines requiring a 4.3150 inch diameter top ring with a 0.043 inch width and feature a plasma-moly coating. However, they are not CARB approved and cannot be shipped to California. Always consult your engine's service manual for specific recommendations.

Mahle OE Piston Ring Set 3000384B

Name: Mahle Rings 4.3150in X .043 EW Plasma-Moly Ductile Reduced RW Top Ring Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-3150in-x-043-ew-plasma-moly-ductile-reduced-rw-top-ring-r-t14-51144
Price: 745.75 USD
Availability: BackOrder

Mahle Rings 4.3150in X .043 EW Plasma-Moly Ductile Reduced RW Top Ring Ring Set (48 Qty Bulk Pack)

$745.75

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 Piston Ring Set, 4.3150in x .043in. Bulk pack of 48.

Key Features

This is a bulk pack containing 48 top ring sets.
Each ring measures 4.3150 inches in diameter.
The ring width is 0.043 inches.
Constructed with ductile iron for strength.
Features a plasma-moly face on the top ring for improved wear resistance and reduced friction.
Reduced wall thickness is designed for compatibility with modern piston designs.

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Product Details

Mahle OE offers this bulk pack of 48 top ring sets, each measuring 4.3150 inches in diameter with a 0.043-inch width. These rings are constructed with ductile iron and feature a plasma-moly face, a popular choice for its durability and improved wear resistance compared to plain cast iron. The reduced wall thickness is designed to work with modern piston designs, helping to ensure a good seal and efficient combustion.

When you're rebuilding an engine, especially if you're working on a performance build or a fleet of vehicles, having a reliable supply of quality piston rings is essential. Mahle OE is a well-known name in engine components, and these rings are made to meet the demands of serious engine work. The plasma-moly face is applied to the top ring, which is the ring that sees the most heat and pressure. This coating helps to reduce friction and wear, extending the life of both the ring and the cylinder wall. The ductile iron base provides a solid foundation for the coating and offers good strength.

This is a bulk pack containing 48 individual ring sets, making it a practical choice for shops or for engine builders who need a significant quantity on hand. 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.