
- Lightweight Construction: The lightweight design helps reduce the overall mass of the moving components, which can improve engine response and reduce stress on your crankshaft and connecting rods.
- Quality Construction: Manufactured with the same precision and quality standards as original equipment parts, ensuring a durable and dependable component for your engine.
- Expansion-Controlled Design: This advanced feature maintains the correct piston-to-cylinder clearance across all operating temperatures, which is essential for reducing engine noise, wear, and emissions.
- OEM Replacement: Designed to be a direct-fit replacement for the left bank of your engine, simplifying the rebuilding process for a clean and professional installation.

When a rebuild is needed for your 2001-2005 GM 6.6L Duramax LB7/LLY engine, you want to choose components that will provide factory-level quality and a precise fit. The MAHLE 224-3451WR.040 Piston with Rings (.040, Left Bank) is the ideal OEM replacement, engineered to restore your engine's performance with confidence. With a lightweight and expansion-controlled design, this piston and ring set is specifically designed for cylinders that have been machined to a .040 oversized bore, ensuring an optimal, long-lasting fit that's crucial for engine health and reliability.
Key features of this piston and ring set include:
Lightweight Construction: The lightweight design helps reduce the overall mass of the moving components, which can improve engine response and reduce stress on your crankshaft and connecting rods.
Quality Construction: Manufactured with the same precision and quality standards as original equipment parts, ensuring a durable and dependable component for your engine.
Expansion-Controlled Design: This advanced feature maintains the correct piston-to-cylinder clearance across all operating temperatures, which is essential[...]
- Lightweight Construction: The lightweight design helps reduce the overall mass of the moving components, which can improve engine response and reduce stress on your crankshaft and connecting rods.
- Quality Construction: Manufactured with the same precision and quality standards as original equipment parts, ensuring a durable and dependable component for your engine.
- Expansion-Controlled Design: This advanced feature maintains the correct piston-to-cylinder clearance across all operating temperatures, which is essential for reducing engine noise, wear, and emissions.
- OEM Replacement: Designed to be a direct-fit replacement for the left bank of your engine, simplifying the rebuilding process for a clean and professional installation.