CATERPILLAR K400021-01 Duct AS K40002101

Caterpillar K400021-01 Duct Assembly – OEM-Grade Durability for Excavators

The Caterpillar K400021-01 Duct Assembly is a precision-engineered replacement part designed to meet the rigorous demands of heavy-duty excavators, including models such as the 2LS-311B, 8GR-311B, 3FS-312B L, 8JR-312B L, and many others across the 311B to 385B series. Manufactured with high-grade metallurgy and engineered to exact OEM specifications, this duct assembly ensures optimal airflow and heat dissipation within the engine compartment, critical for maintaining peak performance under extreme load conditions. Its robust construction guarantees long-lasting durability, resisting wear and thermal degradation in harsh mining and construction environments.

Featuring precise dimensional tolerances and compatibility with a wide range of Caterpillar excavators, the K400021-01 duct assembly integrates seamlessly into the drivetrain and cooling systems. This component plays a vital role in sustaining engine efficiency by directing airflow to critical components, thus preventing overheating and enhancing overall machine reliability. The duct’s corrosion-resistant materials and reinforced joints contribute to its superior lifespan, minimizing downtime and maintenance costs. Ideal for operators seeking OEM-grade quality and performance, this duct assembly supports sustained productivity in heavy equipment operations.

🔗 For detailed specifications and to purchase the Caterpillar K400021-01 Duct Assembly, visit the Caterpillar K400021-01 Duct AS product page.