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

The plasma-moly coating, applied using the HVOF process, creates a very dense and well-bonded layer. This coating is known for its excellent wear resistance and ability to reduce friction between the piston ring and the cylinder wall, which can improve engine efficiency and longevity.

Are these rings suitable for all engine builds?

These rings are designed for a 3.771-inch bore and are a popular choice for performance and durability. However, it's essential to verify that this specific size and type match your engine's specifications. They are not CARB approved and cannot be shipped to California.

What does the '48 Qty Bulk Pk' mean?

This means the package contains 48 individual piston rings. This is a bulk quantity, often purchased by machine shops or builders who are working on multiple engines or larger projects and need a significant number of rings.

Mahle Plasma Steel Piston Rings 3011258B

Name: Mahle Rings Perf Plasma Steel Top Ring 3.771in 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-3-771in-x-1-0mm-143in-rw-hvof-mo-t14-47968
Price: 571.32 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 3.771in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$571.32

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 steel top piston rings for engine rebuilding. 3.771in bore, 1.0mm width, HVOF Moly coating.

Key Features

Fits a 3.771-inch cylinder bore.
Top ring thickness is 1.0mm.
Features a 0.143-inch ring groove depth.
Plasma-moly coating applied via HVOF process for improved wear resistance and reduced friction.
Steel construction provides good tension and sealing.
Bulk pack includes 48 rings, suitable for multiple engine builds.

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Product Details

When you're rebuilding the top end of an engine, getting the piston rings right is crucial for sealing the combustion chamber and ensuring proper oil control. This set from Mahle OE features plasma-moly coated top rings, a popular choice for performance and durability. The plasma-moly coating is applied using a High Velocity Oxygen Fuel (HVOF) process, which creates a very dense and well-bonded layer that resists wear and reduces friction.

These rings are designed for a 3.771-inch bore and have a 1.0mm thickness with a 0.143-inch ring groove depth. The steel construction offers good tension and resilience, helping to maintain a tight seal against the cylinder wall even under demanding conditions. This bulk pack contains 48 rings, making it a practical option for shops or builders working on multiple engines or larger projects. Mahle is a well-known name in engine components, and these rings reflect their commitment to providing reliable parts for engine builds.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for correct installation procedures and ring gap specifications to ensure optimal performance and longevity of your rebuild.