What is the purpose of the gas nitride treatment on these rings?

The gas nitride treatment is a surface hardening process applied to the steel rings. This coating helps the rings resist wear and provides a durable sealing surface against the cylinder wall, especially in demanding engine applications.

What does the '48 Qty Bulk Pk' mean?

This means the package contains 48 individual sets of piston rings. This is ideal for engine builders or shops that work on multiple engines with the same bore size.

Are these rings suitable for all engine builds?

These rings are specifically sized for a 4.255 inch bore and feature a nitride treatment suitable for performance or demanding applications. Always verify that these specifications match your engine's requirements and refer to your engine's service manual for proper installation and gap settings.

Mahle OE Piston Rings 3011216B - 4.255in Bore

Name: Mahle Rings Gas Nitride Steel Perf Top Comp 4.255in 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-4-255in-x-043in-170-rw-plai-t14-49564
Price: 509.88 USD
Availability: BackOrder

Mahle Rings Gas Nitride Steel Perf Top Comp 4.255in x .043in .170 RW Plain Ring Set (48 Qty Bulk Pk)

$509.88

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 for 4.255in bore engines. Nitrided top compression rings. Bulk 48-piece pack.

Key Features

Fits engines with a 4.255 inch bore diameter.
Top compression rings are made of steel with a gas nitride treatment for improved wear resistance.
Ring dimensions are 4.255in x 0.043in x 0.170in.
This is a bulk pack containing 48 complete sets of piston rings.
Mahle OE is a well-known brand in engine components.
Not CARB approved; cannot ship to California.

These piston rings are designed for engines with a 4.255 inch bore. Always confirm compatibility with your specific engine build and consult manufacturer specifications.

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Product Details

When you're rebuilding an engine, especially for performance applications or when dealing with a larger bore size like 4.255 inches, the piston rings are critical for sealing the combustion chamber. This bulk pack of 48 sets from Mahle OE offers a solid solution for shops or builders working on multiple engines or larger projects. These rings are designed to provide a good seal, which is essential for maintaining compression and preventing blow-by.

The top compression rings in this set are made from steel and feature a gas nitride treatment. This nitride coating is a durable surface treatment that helps the rings resist wear and provides a good mating surface against the cylinder wall, especially under the higher temperatures and pressures found in performance engines. The rings measure 4.255 inches in bore diameter with a thickness of 0.043 inches for the top ring and 0.170 inches for the second ring, ensuring a proper fit in the piston groove. This specific design aims to maintain consistent sealing across a range of operating conditions.

This is a bulk pack containing 48 complete sets of rings, making it a practical choice for engine builders or performance shops that frequently work on engines with this bore size. 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 installation procedures and recommended ring gap settings to ensure optimal performance and longevity.