What is the benefit of a plasma-moly coating on piston rings?

A plasma-moly coating, applied via HVOF thermal spray, creates a very dense and durable wear surface. This helps to reduce friction between the ring and cylinder wall, which can improve engine efficiency and extend the life of both components.

Why are these rings sold in a bulk pack of 48?

This bulk pack is intended for professional engine builders or shops that work on multiple engines or large projects. It ensures you have a sufficient quantity of high-quality rings on hand for various applications.

Are these rings suitable for all engine builds?

These rings are designed for a 4.315-inch bore and feature specific top ring dimensions and coatings for performance and durability. However, they are not CARB approved and cannot be shipped to California. Always verify compatibility with your specific engine build and local regulations.

Mahle OE Piston Rings 3011093B - 4.315in Bore

Name: Mahle Rings Perf Plasma Steel Top Ring 4.315in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-plasma-steel-top-ring-4-315in-x-1-0mm-143in-rw-hvof-mo-t14-47841
Price: 875.00 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 4.315in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$875.00

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 Rings for engine rebuilds. 4.315in bore with 1.0mm plasma-moly top rings.

Key Features

Fits 4.315 inch bore engines.
Features a 1.0mm thick plasma-moly coated steel top ring.
Includes a .143 inch oil ring width.
Utilizes HVOF thermal spray for a dense and durable coating.
Comes in a bulk pack of 48 rings.
Not CARB approved; cannot ship to California.

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Product Details

When you're rebuilding the top end of an engine, especially for performance applications or a heavy-duty overhaul, the piston rings are critical components. These Mahle OE Plasma Steel Top Rings are designed for a 4.315-inch bore, featuring a 1.0mm top ring thickness and a .143-inch oil ring width. They utilize a plasma-moly coating applied via HVOF (High Velocity Oxygen Fuel) thermal spray, which is a well-known method for creating a very dense and durable wear surface.

This bulk pack contains 48 rings, making it a practical choice for shops or builders working on multiple engines or those who need a significant quantity for a large project. The plasma-moly coating is chosen for its ability to reduce friction and improve wear resistance, which is essential for maintaining good compression and oil control over the life of the engine. The steel construction of the top ring offers good strength and heat resistance, complementing the advanced coating.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Ensure you check the specific requirements for your engine build and local regulations before purchasing. Proper installation is key to their performance and longevity, so always refer to Mahle's installation guidelines or consult a professional mechanic.