What does 'drop-in rings' mean for my Duramax rebuild?

Drop-in rings are designed to fit directly into your existing pistons without needing significant modifications. This can make the installation process more straightforward compared to custom-fit rings, saving you time during your engine rebuild.

Are these rings compatible with all 6.6L Duramax engines?

This set is specifically for the 6.6L Duramax diesel engine and features a 4.055 inch bore size. It's important to confirm that your specific engine model and bore size match these specifications for proper fitment.

What is the significance of the different ring sizes (1/16in, 2.0mm, 3.0mm)?

These sizes refer to the thickness of the top compression ring (1/16 inch), the second compression ring (2.0mm), and the oil control ring (3.0mm). This specific configuration is engineered to provide optimal sealing, oil control, and heat transfer for the Duramax diesel engine.

Mahle GM Duramax Piston Rings 4055MDR

Name: Mahle MS GM Duramax 4.055in 1/16in 2.0mm 3.0mm Drop In Rings
Brand: Mahle
SKU: mahle-mahle-ms-gm-duramax-4-055in-1-16in-2-0mm-3-0mm-drop-in-rings-t14-179753
Price: 552.29 USD
Availability: BackOrder

Mahle MS GM Duramax 4.055in 1/16in 2.0mm 3.0mm Drop In Rings

$552.29

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 GM Duramax 4.055in 1/16in 2.0mm 3.0mm Drop In Rings

Key Features

Fits GM 6.6L Duramax diesel engines.
Features a 4.055 inch bore size.
Includes a 1/16 inch top ring, a 2.0mm second ring, and a 3.0mm oil ring.
Constructed from steel for durability in diesel applications.
Designed as a drop-in replacement for easier installation.
Intended for 8-cylinder engine configurations.

This piston ring set is designed for GM 6.6L Duramax diesel engines. Please verify fitment with your specific vehicle application.

⚠️ 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

This is a set of Mahle MS GM Duramax piston rings, specifically designed for the 6.6L Duramax diesel engine. These rings are a drop-in replacement, meaning they are engineered to fit directly into your existing pistons without requiring extensive modifications, which can simplify the rebuild process. They feature a specific ring configuration: a 1/16 inch top ring, a 2.0mm second ring, and a 3.0mm oil ring, all made from steel for durability in diesel applications.

When you're rebuilding the top end of your Duramax engine, the piston rings play a critical role in sealing the combustion chamber, controlling oil consumption, and transferring heat from the piston to the cylinder wall. Mahle is a well-known name in engine components, and this set is built to meet the demands of a diesel engine. The steel construction of these rings offers good wear resistance and strength, which is important for the higher cylinder pressures found in diesel engines. The specific dimensions of 4.055 inches for the bore size ensure a precise fit for the intended application.

This set is intended for an 8-cylinder configuration, typical for the GM Duramax. It's important to note that these rings 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 of your engine rebuild.