What is the main advantage of forged aluminum pistons over cast pistons?

Forged aluminum pistons are significantly stronger and more durable than cast pistons. This makes them more resistant to deformation under high cylinder pressures and temperatures, which is crucial for performance or heavy-duty applications.

What is the compression ratio for this piston set?

This Mahle MS piston set is designed to achieve a 16.6:1 compression ratio, based on the piston dish volume and other engine specifications.

Are these pistons suitable for all Duramax engines?

This set is specifically designed for GM 6.6L Duramax 411 cu in engines. It's important to confirm that your engine's bore, stroke, and rod length match the specifications of this piston set for proper fitment.

Mahle Duramax Piston Set 930036295

Name: Mahle MS Piston Set Duramax 4.095in Bore 3.898in Stk 6.417in Rod 1.358 Pin -41.8cc 16.6 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-duramax-4-095in-bore-3-898in-stk-6-417in-rod-1-358-pin-t14-30111
Price: 2974.89 USD
Availability: BackOrder

Mahle MS Piston Set Duramax 4.095in Bore 3.898in Stk 6.417in Rod 1.358 Pin -41.8cc 16.6 CR Set of 8

$2974.89

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 Piston Set for GM 6.6L Duramax. Forged aluminum construction for durability.

Key Features

Fits GM 6.6L Duramax 411 cu in engines.
Forged aluminum construction for improved strength and durability.
4.095 inch bore size.
Features a -41.8cc dish volume.
Designed for a 16.6:1 compression ratio.
Includes pistons with a 3.898 inch stroke and 6.417 inch rod length.

This piston set is designed for GM 6.6L Duramax 411 cu in engines. Please verify compatibility with your specific vehicle and engine configuration.

⚠️ 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

Mahle is a well-known name in engine components, often supplying parts for original equipment manufacturers. This piston set is built for GM 6.6L Duramax engines, specifically for builds that demand more from the engine's core components. These are forged aluminum pistons, which means they are significantly stronger and more durable than cast pistons, making them a solid choice for performance or heavy-duty applications where the stock pistons might not hold up.

This set is designed with a 4.095-inch bore and features a -41.8cc dish volume, contributing to a 16.6:1 compression ratio. The stroke is 3.898 inches, and the rod length is 6.417 inches, with a 1.358-inch pin diameter. Each piston weighs in at 797 grams. These specifications are tailored for engines that have been modified or are being rebuilt for higher performance or to handle increased stress. The forged construction helps resist deformation under high cylinder pressures and temperatures, which is common in modified diesel engines.

When rebuilding or upgrading your Duramax engine, using a well-built piston set like this Mahle MS series is crucial for long-term reliability and performance. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.