What is the advantage of plasma-moly steel and moly rings?

Plasma-moly steel top rings offer excellent wear resistance and can withstand high temperatures and pressures, ensuring a good seal. Moly coated second rings help reduce friction and improve oil control, contributing to overall engine efficiency and longevity.

What does a bulk pack of 48 ring sets mean for me?

This pack is ideal for engine builders or performance shops that frequently work on multiple engines or need to stock parts for several projects. It provides a cost-effective way to acquire a large quantity of high-performance piston rings.

Are these rings suitable for all engine builds?

These rings are designed for performance applications requiring a 4.175-inch bore and are built for durability. However, they are not CARB approved and cannot be shipped to California. Always ensure they meet the specific requirements of your engine build.

Mahle Piston Rings 4.175in Plasma-Moly Steel 3010991B

Name: Mahle Rings Perf 4.175in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)
Brand: Mahle OE
SKU: mahle-oe-mahle-rings-perf-4-175in-x-1-5mm-151-rw-plasma-moly-steel-top-ring-moly-t14-48757
Price: 582.62 USD
Availability: BackOrder

Mahle Rings Perf 4.175in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set (48 Qty Bulk Pack)

$582.62

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 Piston Ring Set, 4.175in bore, plasma-moly steel top ring. Bulk pack for engine builds.

Key Features

Fits 4.175 inch bore engines.
Features a plasma-moly steel top ring for improved durability and wear resistance.
Includes a moly (molybdenum) coated second ring to help reduce friction and control oil consumption.
Designed for performance engine applications where consistent sealing is crucial.
Comes in a bulk pack containing 48 individual piston ring sets.
Not CARB approved; cannot ship to California.

This is a bulk pack of 48 piston ring sets designed for a 4.175-inch bore. Check manufacturer specifications to confirm compatibility with your specific engine build.

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Product Details

This is a bulk pack of 48 Mahle OE piston ring sets, each designed for a 4.175-inch bore. These rings feature a plasma-moly steel top ring and a moly ring, which are well-known for their durability and ability to handle demanding engine conditions. This setup is commonly used in performance engine rebuilds where reliability and consistent sealing are critical.

The plasma-moly coating on the top ring is a tough surface treatment that helps reduce friction and wear, especially under high temperatures and pressures. This means the rings can maintain a good seal against the cylinder wall for longer, which is important for both power output and oil control. The moly (molybdenum) coating on the second ring also contributes to reduced friction and improved oil consumption control. This combination helps ensure efficient combustion and protects your engine components.

Because this is a bulk pack of 48 sets, it's ideal for shops or builders who frequently work on performance engines or need to stock up for multiple projects. While these rings are built for performance, it's important to note they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper ring gap setting and installation procedures to ensure optimal performance and longevity in your engine build.