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  • Cummins Diesel Engine 6CT 420 Flywheel 3960491
  • Cummins Diesel Engine 6CT 420 Flywheel 3960491
  • Cummins Diesel Engine 6CT 420 Flywheel 3960491
  • Cummins Diesel Engine 6CT 420 Flywheel 3960491
  • Cummins Diesel Engine 6CT 420 Flywheel 3960491
Cummins Diesel Engine 6CT 420 Flywheel 3960491
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Cummins Diesel Engine 6CT 420 Flywheel 3960491

  • >= 1 Pieces
    $109

Customization:

Graphic customization（Min.Order: 50000 pieces）
Customized packaging（Min.Order: 50000 pieces）
Customized logo（Min.Order: 50000 pieces）
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Cummins Diesel Engine 6CT 420 Flywheel 3960491

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Energy Storage & Power Smoothing: Stores kinetic energy to stabilize engine operation, reducing vibrations and ensuring smooth power delivery in diesel engines.
  • Clutch Engagement: The toothed outer edge ensures precise engagement with manual transmission clutches, enhancing gear-shifting efficiency.

Key features

  • 1. Material Technology

    • With high-strength cast iron/steel construction, ensure reliable performance in heavy-duty diesel engine environments compared to lower-grade materials*.

  • 2. Interactive Design

    • With precision-machined clutch teeth and central mounting hub, achieve seamless engagement with transmission components for smooth power transfer.

  • 3. Performance Parameters

    • With optimized energy storage capabilities, maintain consistent power output and reduce engine vibration by up to 30% during operation*.

  • 4. Scenario Solutions

    • Engineered for Cummins 6CT diesel engines, providing commercial-grade reliability for heavy-duty applications like trucks or industrial equipment.

  • 5. Certification Standards

    • Manufactured to OEM specifications, meeting Cummins' rigorous quality standards for engine compatibility and performance.

Product details

Cummins Diesel Engine 6CT 420 Flywheel 3960491

The Cummins Diesel Engine 6CT 420 Flywheel (Part No. 3960491) is a precision-engineered component designed for Cummins diesel engines. Crafted from high-strength cast iron/steel, it ensures optimal energy storage and power smoothing in demanding engine operations. The part features a robust toothed outer rim for clutch engagement and a centrally mounted hub for secure crankshaft attachment, making it critical for maintaining engine efficiency and durability.

Technical specifications

FeatureSpecificationBenefit
MaterialCast iron/steelWithstands high thermal stress and mechanical load
CompatibilityCummins 6CT diesel engine seriesDirect OEM fit for seamless integration
Rotational InertiaOptimized for 420 HP engine outputSmooths power delivery and reduces vibration
DurabilityWear-resistant surface (used condition)Proven longevity in heavy-duty applications
Warranty6 monthsComprehensive coverage for defect replacement

Customization guide

Adjust material thickness or tooth profile to meet specific clutch engagement requirements. Use part number 160112 and code S3 for exact replacements or customization requests.

Get inspired

Engineers and mechanics rely on this flywheel to stabilize engine performance in rugged environments. Its robust design ensures reliable clutch operation and minimizes energy loss during power cycles.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Rotational InertiaOEM-standard+15% enhanced+30% premium*
Material GradeCast ironAlloy steelHeat-treated alloy
Max RPM3,5004,0004,500
Weight22 kg24 kg (balanced)26 kg (high inertia)

Supplier's note

  1. Technical Breakthroughs:

    • Material Composition: The Pro Model’s heat-treated alloy provides 20% higher fatigue resistance than traditional cast iron.
    • Rotational Inertia: The +30% inertia boost in the Pro Model ensures smoother power delivery in high-torque applications like trucks.
    • Precision Machining: Advanced Model tooth profiles reduce clutch wear by 15% compared to industry standards.

  2. Version Selection Guide:

    • Base Model: Ideal for standard Cummins 6CT engines requiring OEM-level performance.
    • Advanced Model: Choose for heavy-duty commercial vehicles needing balanced durability and RPM capacity.
    • Pro Model: Optimal for extreme-duty applications (e.g., mining equipment) where sustained high torque and thermal resistance are critical. With its tripled corrosion resistance (vs. base models), it excels in harsh environments.

Frequently asked questions

  • Which Cummins diesel engine flywheel is suitable for small workshop applications?

  • How do I clean and maintain the clutch engagement teeth on a Cummins 6CT flywheel?

  • Cast Iron vs. Steel Flywheels: Which is better for Cummins diesel engines?

  • Can I customize the Cummins 6CT 420 flywheel (3960491) with a specific part number?

  • Is the Cummins 6CT flywheel 3960491 certified for heavy-duty diesel engine use?

  • What’s the warranty period for the Cummins 6CT 420 flywheel 3960491?

  • How does the Cummins 6CT flywheel improve engine performance?

  • What do the part number 3960491 and code S3 on the Cummins 6CT flywheel indicate?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material ConstructionHeavy machinery, high-torque enginesCast Iron (Industry Standard)Steel Alloy (Our Advanced ▲▲) (enhanced strength-to-weight ratio)
Advantages: Steel Alloy reduces weight by 20% while maintaining strength.Disadvantages: Advanced versions cost 30% more than industry standards.

| Durability & Lifespan | Long-running industrial engines | 10,000 cycles (Industry) | 15,000 cycles (Our Base ▲) | 20,000 cycles (Our Advanced ▲▲) (exceeds ISO 12100 standards) |
| | | | Advantages: Advanced versions reduce downtime by 40%. | Disadvantages: Higher durability requires specialized manufacturing. |

| Energy Storage Capacity | Frequent start-stop operations | 500J (Industry) | 600J (Our Base ▲) | 700J (Our Advanced ▲▲) (supports 200+ daily starts) |
| | (construction equipment) | | Advantages: Advanced versions cut engine vibration by 15%. | Disadvantages: Larger size may require engine compartment adjustments. |

| Weight Optimization | Fuel-efficient vehicles | 25kg (Industry) | 22kg (Our Base ▲) | 20kg (Our Advanced ▲▲) (reduces fuel consumption by 8%) |
| | | | Advantages: Lighter designs improve acceleration. | Disadvantages: Sacrifices some durability in extreme conditions. |

| Warranty Coverage | Fleet management, commercial use | 3 months (Industry) | 6 months (Our Base ▲) | 12 months (Our Advanced ▲▲) (industry-leading coverage) |
| | | | Advantages: Advanced warranties reduce long-term costs. | Disadvantages: Higher upfront pricing for extended warranties. |

| Customization & Compatibility | OEM replacement, specialized engines | Basic part numbers (Industry) | Enhanced tracking (Our Base ▲) | Custom numbering (Our Advanced ▲▲) (simplifies fleet management) |
| | | | Advantages: Advanced versions allow tailored part numbering. | Disadvantages: Customization may delay delivery times. |

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