Description
Product Overview
The Cummins 3971520 accessory drive gear plays a vital role in the performance of your engine by ensuring precise power delivery to key engine-driven components. Engineered to meet the rigorous demands of Cummins diesel engines—particularly models such as the ISDe and 6BT—this component is manufactured with strict tolerances and robust materials to guarantee long-term durability, high efficiency, and minimal maintenance.
Key Features
OEM-Level Precision: Manufactured to Cummins’ exact specifications, ensuring a perfect fit and consistent operation in compatible engines.
Durable Material Composition: Forged from high-grade steel alloys for superior strength, wear resistance, and long service life, even in harsh working conditions.
Reliable Power Transfer: Provides efficient and accurate power delivery to components such as fuel pumps, alternators, and air compressors.
Heat-Treated Finish: Enhanced surface hardness to resist wear and prevent premature gear failure.
Low Vibration and Noise: Designed to operate smoothly within the gear train, reducing mechanical noise and extending the lifespan of surrounding components.
Applications
This accessory drive gear is widely used in mid-size and heavy-duty commercial vehicles, construction machinery, and industrial generators powered by Cummins ISDe and 6BT series engines. Its compatibility ensures optimal engine performance in demanding environments, such as:
Trucks and buses
Excavators and wheel loaders
Industrial diesel generator sets
Marine engines and agricultural equipment
Compatibility
The 3971520 gear is fully compatible with a range of Cummins diesel engine models, including:
Cummins ISDe 4.5 / 6.7 Engines
Cummins 6BT 5.9 Engines
Other engines utilizing the same accessory drive gear specifications
Always verify engine serial number and configuration to ensure proper fitment before installation.
Quality Assurance
Every 3971520 accessory drive gear undergoes rigorous inspection and quality control procedures during manufacturing. From material sourcing to final machining, Cummins-approved processes ensure each gear meets high performance and durability standards. The part complies with ISO/TS 16949 certification requirements, ensuring international quality consistency.
Installation Tips
Professional installation is recommended to avoid gear misalignment or improper torque settings.
Always check for worn or damaged mating components before replacement.
Use genuine Cummins tools and reference engine manuals during installation to maintain warranty coverage and optimal performance.
Why Choose the Cummins 3971520 Gear?
Investing in genuine or OEM-grade replacement parts like the 3971520 accessory drive gear safeguards your engine from unexpected failures and maintains performance efficiency. Whether you’re conducting routine maintenance or a complete engine rebuild, this gear is a reliable choice that reflects Cummins’ legacy of engineering excellence.
