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

The plasma-moly coating on these top compression rings is a surface treatment that significantly reduces friction between the ring and the cylinder wall. It also improves wear resistance, helping the rings last longer and maintain their sealing performance under demanding conditions.

What does 'bulk pack' mean for these piston rings?

This is a bulk pack containing 48 rings. It's designed for professional engine builders or shops that frequently work on multiple engines, providing a convenient and cost-effective way to stock up on essential components.

Are these piston rings suitable for all engine builds?

These rings are made from steel with a plasma-moly coating and are intended for demanding applications where durability and performance are important. They are designed for a 4.535-inch bore and a 0.0625-inch ring groove. Always confirm compatibility with your specific engine build requirements.

Mahle OE Piston Rings 3011121B - 4.535in Bore

Name: Mahle Rings Plasma Moly Steel Top Comp Ring 4.535in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-plasma-moly-steel-top-comp-ring-4-535in-x-0625in-190in-rw-r-t14-47567
Price: 738.69 USD
Availability: BackOrder

Mahle Rings Plasma Moly Steel Top Comp Ring 4.535in x .0625in .190in RW Ring Set (48 Qty Bulk Pack)

$738.69

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 Moly Steel Top Comp Rings for engine builds. Bulk 48-piece pack for professional use.

Key Features

Fits 4.535 inch bore engines.
Top compression ring is 0.0625 inches thick.
Features a plasma-moly coating for improved wear resistance and reduced friction.
Constructed from durable steel for strength and longevity.
Bulk pack contains 48 rings, ideal for professional engine builders.
Not CARB approved; cannot ship to California.

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Product Details

When you're rebuilding an engine, especially for a performance application or a heavy-duty workhorse, the piston rings are critical for sealing the combustion chamber and managing oil. Mahle's Plasma Moly Steel Top Compression Rings are built for demanding situations where reliability and performance are key. These rings are designed to handle the heat and pressure of combustion, helping to ensure your engine runs smoothly and efficiently.

These rings feature a plasma-moly coating on the top compression ring, which is a well-known surface treatment for reducing friction and improving wear resistance. This means they can handle more aggressive use and maintain their sealing ability over time. The steel construction offers strength and durability, crucial for engines that see a lot of miles or hard work. This bulk pack of 48 rings is ideal for shops that frequently work on engines or for builders who need a good supply of high-quality rings for multiple projects.

Because these are a bulk pack, they're intended for professional engine builders or those undertaking multiple engine builds. Ensure you have the correct ring groove dimensions for these 0.0625-inch thick rings, which are designed for a 4.535-inch bore. Remember that these rings are not CARB approved and cannot be shipped to California.