MAHLE 930036275-1 GM 6.6L Duramax Forged Aluminum Race Piston 407cid 4.075 Bore 16.5CR M124P

The MAHLE Motorsports 930036275-1 is a competition-grade forged aluminum race piston designed for the GM 6.6L Duramax diesel engine. Sold as a single piston, this is the 407 cubic inch, 4.075-inch bore variant engineered for high-horsepower drag racing and sled pulling applications where maximum strength and precision are critical.

Manufactured from M124P forged aluminum alloy, these pistons offer superior strength and design flexibility compared to cast or hypereutectic alternatives. MAHLE's forged race pistons are purpose-built for competition-only environments where power output and structural integrity under extreme cylinder pressure are the top priorities.

Key Features:

• Forged M124P aluminum construction for maximum strength under high boost and cylinder pressure
• Grafal Plus skirt coating for reduced friction, lower drag, and improved scuff resistance during break-in and sustained high-load operation
• Hard anodized top ring groove for enhanced durability and extended service life under race conditions
• 0.075-inch deep valve pockets for increased valve clearance in high-lift camshaft applications
• Floating pin design with included snap ring clips for secure, precise pin retention
• 16.5:1 compression ratio optimized for competition diesel tuning
• Lightweight at 785 grams for reduced reciprocating mass

Technical Specifications:

• Displacement: 407 cid
• Bore Diameter: 4.075 in
• Compression Height: 1.951 in
• Stroke: 3.898 in
• Rod Length: 6.417 in
• Pin Diameter: 1.358 in
• Crown Volume: -41.8 cc (reverse dome)
• Weight: 785 g
• Compression Ratio: 16.5:1
• Alloy: M124P
• Sold as: Single piston (ea)

MAHLE Motorsports is a globally recognized leader in engine component manufacturing, with over a century of engineering expertise. Their forged race pistons are the preferred choice for serious diesel competition builds requiring proven reliability at extreme power levels.