What is the compression ratio for these Mahle pistons?

These Mahle MS pistons are designed to achieve a 16.5:1 compression ratio. This is a notable increase over stock and is suitable for performance diesel engine builds.

What components are included in this piston set?

This set includes eight cast performance pistons. The package contains all the pistons needed for a complete engine rebuild on a GM 6.6L Duramax engine.

Are these pistons suitable for all Duramax engines?

This specific piston set is designed for the GM 6.6L Duramax engine with a 407 cubic inch displacement. It's important to verify your engine's specifications to ensure compatibility.

Mahle Duramax Piston Set 930029875 - 6.6L Diesel

Name: Mahle MS Piston Set Duramax 4.075in Bore 3.898in Stk 6.417in Rod 1.358 Pin -41.8cc 16.5 CR Set of 8
Brand: Mahle
SKU: mahle-mahle-ms-piston-set-duramax-4-075in-bore-3-898in-stk-6-417in-rod-1-358-pin-t14-30119
Price: 1950.89 USD
Availability: BackOrder

Mahle MS Piston Set Duramax 4.075in Bore 3.898in Stk 6.417in Rod 1.358 Pin -41.8cc 16.5 CR Set of 8

$1950.89

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. Includes 8 cast performance pistons with a 4.075in bore and 16.5:1 compression ratio.

Key Features

Fits GM 6.6L Duramax 407 cu in. engines.
Set includes eight cast performance pistons.
Features a 4.075-inch bore size.
Designed for a 3.898-inch stroke and 6.417-inch connecting rod.
Utilizes a 1.358-inch wrist pin.
Includes a -41.8cc dish volume for a 16.5:1 compression ratio.

This piston set is designed for GM 6.6L Duramax 407 cu in. engines. It is not CARB approved and cannot be shipped to California.

⚠️ 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 Mahle MS Piston Set is designed for GM 6.6L Duramax engines, specifically for builds using the 407 cubic inch displacement. What you get in this set are eight cast performance pistons, ready to be installed in your engine. These pistons feature a 4.075-inch bore and are engineered to work with a 3.898-inch stroke and a 6.417-inch connecting rod, utilizing a 1.358-inch pin. The design incorporates a -41.8cc dish volume, contributing to a 16.5:1 compression ratio, which is a notable increase over stock and suitable for performance-oriented builds.

Mahle is a well-known name in engine components, and these cast pistons are built for durability and performance. The material and construction are intended to handle the stresses of a diesel engine, providing a solid foundation for your engine rebuild. Each piston weighs approximately 877 grams, a detail that helps in balancing the rotating assembly for smoother operation. The specific dimensions, including the 1.951-inch compression height and the 1.358-inch wrist pin diameter, are critical for proper fitment and function within the engine block and connecting rod.

When undertaking an engine build of this caliber, attention to detail is key. This piston set is a significant component for anyone looking to enhance or rebuild their Duramax diesel engine. Please note that this product is not CARB approved and cannot be shipped to California. Always refer to manufacturer installation instructions for proper assembly and torque specifications to ensure optimal performance and longevity of your engine.