What is the purpose of the plasma moly coating on these rings?

The plasma moly coating on the top compression ring is applied to significantly improve wear resistance. It also helps reduce friction between the ring and the cylinder wall, which is important for maintaining consistent sealing and extending the life of both the rings and the cylinder bore.

What does the '4.060in x .0625in .190 RW' specification mean?

This specification details the dimensions critical for fitment. '4.060in' refers to the piston bore diameter the rings are designed for. '.0625in' is the width of the top compression ring groove on the piston, and '.190' is the ring's depth or thickness.

Are these rings suitable for all engine builds?

These are performance-oriented piston rings designed for demanding applications. While they are well-built, they are not CARB approved and cannot be shipped to California. Always ensure they match the specific requirements of your engine build, especially for bore size and ring groove dimensions.

Mahle OE Piston Rings 3011020B - Performance Steel

Name: Mahle Rings Perf Plasma Moly Steel Top Comp 4.060in x .0625in .190 RW Moly Ring Set (48 Qty Bulk Pk)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-plasma-moly-steel-top-comp-4-060in-x-0625in-190-rw-mol-t14-48797
Price: 596.04 USD
Availability: BackOrder

Mahle Rings Perf Plasma Moly Steel Top Comp 4.060in x .0625in .190 RW Moly Ring Set (48 Qty Bulk Pk)

$596.04

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 Moly Steel Top Compression Piston Rings. Bulk pack of 48.

Key Features

Fits pistons with a 4.060-inch bore.
Top compression ring width is 0.0625 inches.
Ring depth is 0.190 inches.
Plasma moly coating on the top compression ring enhances wear resistance and reduces friction.
Steel construction for the top compression ring offers strength and durability.
Bulk pack includes 48 sets of piston rings.

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Product Details

If you're rebuilding a high-performance engine and need top-tier piston rings, this bulk pack of Mahle OE Performance Plasma Moly Steel Top Compression Rings is a solid choice. These rings are built for demanding applications where reliability and consistent sealing are critical. They are designed to fit pistons with a 4.060-inch bore and feature a 0.0625-inch top ring groove width, with a 0.190-inch ring depth. The plasma moly coating on the top compression ring is a key feature, offering improved wear resistance and reduced friction against the cylinder wall, which is crucial for maintaining compression and extending engine life under stress.

Mahle is a well-known name in engine components, and these rings reflect that reputation for well-built parts. The steel construction of the top compression ring provides strength and durability, while the moly coating further enhances its performance characteristics. This bulk pack of 48 sets means you'll have plenty on hand for multiple builds or for shops that frequently work on performance engines. Proper ring seal is fundamental to engine performance, affecting everything from horsepower to oil consumption, and these rings are designed to deliver that critical seal.

When installing these rings, ensure you follow the manufacturer's recommended procedures for gapping and seating. Proper installation is key to achieving the performance and longevity these rings are designed for. Remember that these rings are not CARB approved and cannot be shipped to California.