What is the benefit of the nitride treatment on these piston rings?

The nitride treatment is a surface hardening process applied to the top compression rings. This significantly improves their wear resistance, helping them last longer and maintain a consistent seal even under high cylinder pressures and temperatures.

What does the 'RW' and 'Plain Ring Set' designation mean?

The 'RW' typically refers to a specific ring configuration or design from Mahle. 'Plain Ring Set' indicates that these are standard rings, with the primary performance enhancement being the nitride treatment on the top compression ring, rather than additional specialized coatings on all rings.

Is this ring set suitable for all types of engine builds?

This set is specifically designed for performance applications where enhanced sealing and durability are needed. The steel construction and nitride treatment make them well-suited for engines that will experience higher loads and pressures than typical daily drivers.

Mahle OE Piston Rings 3011045B - Steel

Name: Mahle Rings Gas Nitride Steel Perf Top Comp 4.625in x .043in .170 RW Plain Ring Set (48 Qty Bulk Pk)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-gas-nitride-steel-perf-top-comp-4-625in-x-043in-170-rw-plai-t14-49555
Price: 600.28 USD
Availability: BackOrder

Mahle Rings Gas Nitride Steel Perf Top Comp 4.625in x .043in .170 RW Plain Ring Set (48 Qty Bulk Pk)

$600.28

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 steel piston rings, part# 3011045B. Nitrided top compression rings for performance engines. Bulk pack of 48.

Key Features

Fits engines requiring 4.625 inch bore size.
Top compression rings are .043 inch thick.
Designed for .170 inch ring grooves.
Steel construction for strength and durability.
Nitrided surface treatment on top compression rings for improved wear resistance.
Bulk pack contains 48 ring sets.

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Product Details

Mahle is a well-known name in the automotive industry, especially for their expertise in engine components. This specific product, the Mahle OE Rings Gas Nitride Steel Perf Top Comp Ring Set, is designed for performance applications where engine sealing is critical. These aren't your average rings; they're built with a focus on durability and consistent performance under demanding conditions.

What sets these rings apart is their construction and finish. They are made from steel and feature a nitride treatment on the top compression ring. Nitriding is a surface hardening process that significantly increases wear resistance and helps the rings maintain their shape and sealing ability over time, even with higher cylinder pressures. The rings measure 4.625 inches in diameter with a .043 inch thickness for the top compression ring and a .170 inch ring groove width. This set comes in a bulk pack of 48, making it suitable for engine builders or shops working on multiple engines. The 'RW' designation typically indicates a specific ring configuration, and the 'Plain Ring Set' means they are standard rings without special coatings beyond the nitride treatment on the top ring.

When rebuilding or modifying an engine for performance, proper piston ring seal is paramount. It ensures optimal compression, efficient combustion, and helps control oil consumption. This Mahle OE set is a solid option for those looking for well-built components that can handle the rigors of performance use. Please note that this part is not CARB approved and cannot be shipped to California.