What is the benefit of the plasma-moly coating?

The plasma-moly coating applied via HVOF thermal spray creates a very hard and durable surface. This helps to reduce friction between the ring and cylinder wall, which can improve oil control and extend the life of both the ring and the cylinder.

What does '48 Qty Bulk Pk' mean?

This means the package contains 48 individual sets of the top piston rings. This is often purchased by engine builders or machine shops that work on multiple engines at once.

Can this part be shipped to California?

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

Mahle OE Piston Rings 3011063B - Performance Steel

Name: Mahle Rings Perf Plasma Steel Top Ring 4.065in 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-4-065in-x-1-0mm-143in-rw-hvof-mo-t14-47915
Price: 592.51 USD
Availability: BackOrder

Mahle Rings Perf Plasma Steel Top Ring 4.065in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

$592.51

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 Performance Plasma Steel Top Ring Set. 4.065in bore, 1.0mm thickness. Not CARB approved.

Key Features

Fits a 4.065 inch bore diameter.
Top ring thickness is 1.0mm.
Features a plasma-moly coating applied via HVOF thermal spray for durability.
Constructed with a strong steel base for improved strength.
Groove width is 0.143 inches.
Comes in a bulk pack of 48 sets.

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Product Details

The top ring in this Mahle set features a plasma-moly coating applied using HVOF (High Velocity Oxygen Fuel) thermal spray. This advanced coating is bonded to a strong steel base, creating a durable surface that handles the high pressures and temperatures found in performance engines. The ring itself measures 4.065 inches in bore diameter with a 1.0mm thickness and a 0.143-inch groove width, designed for precise fitment in performance pistons.

This bulk pack contains 48 sets of these performance top rings, making it a practical choice for engine builders or shops working on multiple performance builds. The steel construction offers improved strength over cast iron, while the plasma-moly coating helps reduce friction and wear, contributing to better sealing and longer ring life under demanding conditions. This combination is key for maintaining cylinder pressure and optimizing power output in high-performance applications.

When rebuilding or modifying an engine for performance, selecting the right piston rings is crucial for sealing, oil control, and overall engine health. This Mahle set is engineered for those who need robust components for their performance builds. Please note that this part is not CARB approved and cannot be shipped to California.