Mahle Piston Set

HEMI 6.4L 392cid Mopar Hemi

930279095

Overview:

The Mahle Piston Set is a high-quality forged replacement assembly designed specifically for the 6.4L HEMI 392cid Mopar engine. Engineered as a direct drop-in solution, this piston set requires no balancing or compression ratio changes, making it an ideal upgrade or replacement for enthusiasts and professionals seeking reliable performance and durability. Whether rebuilding or upgrading your HEMI engine, these pistons deliver consistent quality and fitment precision.

Mahle’s expertise in piston manufacturing ensures that this set meets stringent OEM standards while offering enhanced strength and thermal resistance. This piston set is perfect for those who demand a robust and dependable component that maintains factory specifications without compromise.

Key Features:

Designed for seamless integration and superior performance, the Mahle Piston Set offers the following key features:

• Forged construction for maximum strength and durability
• Drop-in replacement requiring no engine balancing or compression ratio adjustments
• Compatible with 6.4L HEMI 392cid Mopar engines
• Precision dimensions: 4.095" bore diameter, 1.211" compression height
• Stroke length of 3.724" and connecting rod length of 6.200"
• Pin diameter of 0.945" for secure wrist pin fitment
• 3.6cc piston dish volume supporting an 11.0:1 compression ratio
• Lightweight design at approximately 454 grams per piston for improved engine response
• Manufactured from 4032 alloy for excellent wear resistance and thermal conductivity

Construction & Design:

Mahle’s piston set is crafted from premium 4032 forged aluminum alloy, known for its superior strength-to-weight ratio and excellent heat dissipation properties. The forged design enhances durability under high-stress conditions, making these pistons suitable for both street and performance applications. The pistons feature a carefully engineered dish volume of 3.6cc, which maintains the factory compression ratio of 11.0:1, ensuring optimal combustion efficiency without the need for engine tuning adjustments.

Each piston is precision-machined to exacting tolerances, guaranteeing a perfect fit within the cylinder bore and seamless compatibility with the existing connecting rods and wrist pins. This meticulous engineering reduces the risk of engine wear and promotes long-term reliability.

Installation & Fitment:

This Mahle Piston Set is designed as a direct drop-in replacement for the Mopar HEMI 6.4L 392cid engine, allowing for straightforward installation without the need for additional machining, balancing, or compression ratio modifications. This simplifies the rebuild or upgrade process, saving time and reducing labor costs. It is recommended that installation be performed by a qualified technician to ensure proper clearances and torque specifications are met.

What's Included:

• Set of forged pistons (quantity as required for engine rebuild)
• Wrist pins compatible with 0.945" diameter
• Manufacturer documentation and installation guidelines

Ideal For:

This piston set is ideal for Mopar enthusiasts, engine builders, and professional mechanics who require a reliable, high-strength replacement piston for the 6.4L HEMI 392cid engine. It suits applications ranging from daily driving to moderate performance upgrades where maintaining factory compression and engine balance is critical.

MAHLE is a major engine-technology name, and MAHLE Motorsport’s POWERPAK piston kits are built for enthusiasts, racers, and engine builders who demand strength and consistency under high RPM, boost, and heat. From forged pistons and rings to proven engineering across racing disciplines, MAHLE components are often chosen when reliability is as important as peak power.