What does 'gas nitrided steel' mean for these rings?

Gas nitriding is a heat treatment process that hardens the surface of the steel. This makes the ring more resistant to wear and high temperatures, which is beneficial for engines under severe duty conditions.

Are these rings compatible with all engines?

This set is designed for universal engine applications and specifically for 8-cylinder configurations. It's important to verify that the 4.600 inch bore size matches your engine's requirements.

Why are these rings not CARB approved?

This product is not CARB (California Air Resources Board) approved, meaning it cannot be legally shipped to or installed in California due to emissions regulations.

Mahle GNS Severe Duty Top Ring Set 4600GNS-15T

Name: Mahle MS 4.600in 1.5mm GNS Severe Duty Top Ring
Brand: Mahle
SKU: mahle-mahle-ms-4-600in-1-5mm-gns-severe-duty-top-ring-t14-29879
Price: 149.90 USD
Availability: BackOrder

Mahle MS 4.600in 1.5mm GNS Severe Duty Top Ring

$149.90

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Mahle MS 4.600in 1.5mm GNS Severe Duty Top Ring Set. Features gas nitrided steel for severe duty use.

Key Features

Fits universal engine applications.
Features a 1.5mm gas nitrided steel top ring.
Designed for severe duty use.
Intended for 8-cylinder engine configurations.
Nitrided steel surface offers improved wear and heat resistance.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

Starting with a 1.5mm gas nitrided steel construction, this Mahle Severe Duty Top Ring Set is built for demanding engine conditions. The nitriding process hardens the steel surface, making it more resistant to wear and heat, which is crucial for engines that see heavy use or operate under high stress. This set is designed for an 8-cylinder engine configuration, offering a solid option for rebuilding or refreshing your engine's top end.

The GNS designation signifies Mahle's severe duty ring series, meaning these rings are engineered with enhanced durability in mind. They are a well-built choice for applications where standard rings might not hold up as well over time. When you're putting an engine back together, especially one that's going to work hard, choosing reliable components like these Mahle rings can make a significant difference in longevity and performance.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your vehicle's specific service manual for detailed installation procedures and recommended clearances.