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

The plasma moly coating on the top ring is a surface treatment that significantly improves its resistance to wear and abrasion. This is especially important in high-heat engine environments to ensure the ring maintains its sealing ability over time.

What does 'standard tension reduced radial' mean for these rings?

Standard tension means the rings apply a typical amount of force against the cylinder wall to create a seal. 'Reduced radial' indicates that the force is optimized to be effective without creating excessive drag or friction, which can help improve efficiency.

Are these rings suitable for all engine builds?

This ring set is designed for a specific bore size (4.060 inches) and features like plasma moly coating and ductile iron second rings are often chosen for performance or heavy-duty applications. It's important to verify they match your engine's specifications and intended use.

Mahle OE Piston Ring Set 3150181.065

Name: Mahle Rings 4.060in Bore .043in1.5MM3.00MM Plasma Moly Ductile Std Tension Reduced Rad Moly Ring Set
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-4-060in-bore-043in1-5mm3-00mm-plasma-moly-ductile-std-tensi-t14-51807
Price: 214.14 USD
Availability: BackOrder

Mahle Rings 4.060in Bore .043in1.5MM3.00MM Plasma Moly Ductile Std Tension Reduced Rad Moly Ring Set

$214.14

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 for 4.060in bore engines. Features plasma moly top rings for improved durability.

Key Features

This piston ring set is designed for a 4.060-inch cylinder bore.
The top ring features a plasma moly coating for improved wear resistance.
Top ring thickness is .043 inches, the second ring is 1.5mm, and the oil ring is 3.00mm.
Ductile iron is used for the second ring, offering good sealing and durability.
Standard tension design with reduced radial tension helps maintain a good seal and minimize friction.
Mahle OE is a popular brand for engine components.

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Product Details

The top ring in this Mahle piston ring set is plasma moly coated, a tough surface treatment that helps it resist wear and abrasion, especially under high heat. This set is built for a 4.060-inch bore, and the top ring measures .043 inches thick, with the second ring at 1.5mm and the oil ring at 3.00mm. These dimensions are common in many performance and heavy-duty engine builds where precise sealing is critical.

You're getting ductile iron for the second ring, which offers a good balance of strength and flexibility to seal against the cylinder wall effectively. The standard tension design ensures a solid seal without excessive drag, and the reduced radial tension helps minimize friction. This combination of materials and design choices makes for a well-built ring set that aims for reliable performance and longevity in your engine.

When you're rebuilding an engine, especially if you're going beyond stock specifications, the piston rings are a crucial component for proper compression and oil control. Mahle is a well-known name in engine parts, and this set is designed to be a solid option for your project.