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  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
  • ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841
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ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841

  • >= 1 Sets
    $59

Customization:

Graphic customization（Min.Order: 5000 pieces）
Customized packaging（Min.Order: 5000 pieces）
Customized logo（Min.Order: 5000 pieces）
View product details

ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Force Transmission & Motion Conversion: Designed to transfer linear motion from pistons to the crankshaft in Cummins diesel engines (ISBe, ISDe, QSB series), enabling efficient power generation.
  • Load Support & Thermal Resistance: Engineered with high-strength metallic alloys to withstand extreme engine pressures, temperatures, and vibrations, ensuring durability in heavy-duty applications.

Key features

  • 1. Corrosion-Resistant High-Strength Alloy Construction

    • With a corrosion-resistant high-strength alloy material, ensure durability in extreme engine conditions such as high temperatures and pressures. Outperform standard steel bearings in harsh environments*.

  • 2. Precision-Engineered Design for Reduced Friction

    • With precision-engineered geometry, reduce friction and wear by up to 15% compared to generic bearings, improving engine efficiency and longevity*.

  • 3. Commercial-Grade Performance for Heavy-Duty Applications

    • Tailored for diesel engines in commercial vehicles, deliver 20% longer service life under continuous operation than standard bearings*. Ideal for demanding scenarios like long-haul trucks or industrial machinery*.

  • 4. Direct Fit Compatibility with Cummins Engines

    • Engineered for direct fitment with Cummins ISBe/ISDe/QSB models (part numbers 3939390/3939380/205841), eliminating compatibility issues common with aftermarket parts*.

  • 5. Extended 6-Month Warranty for Reliability

    • Backed by a 6-month warranty—twice as long as the industry standard—ensuring confidence in performance and durability*.

Product details

ISBe ISDe QSB Cummins Connecting Rod Bearing 3939390 3939380 205841

The ISBe ISDe QSB Cummins Connecting Rod Bearing Set (3939390/3939380/205841) is engineered for diesel engines, offering precision-machined metallic components designed to withstand extreme thermal and mechanical stresses. Crafted from high-strength alloys, these bearings ensure reliable power transmission in Cummins engines, backed by a 6-month warranty.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-strength steel/alloyWithstands engine temperatures up to 250°C
SizeStandard Cummins fit (part numbers listed)Direct replacement for ISBe/ISDe/QSB engines
DurabilityCorrosion-resistant surface treatmentProlongs engine life in harsh environments
PackagingClear plastic bag with protective foamSafe storage and transportation
QuantitySold in sets of 2 bearingsEnsures balanced load distribution

Customization guide

Adjustable parameters include clearance tolerances (±0.01mm increments) and surface coatings (e.g., molybdenum disulfide) to meet specific engine rebuild requirements.

Get inspired

With these bearings’ precision engineering, you can achieve seamless integration into Cummins diesel engines, reducing friction losses and enhancing long-term reliability. Their robust design ensures compatibility with high-torque applications, making them ideal for commercial vehicles and industrial machinery.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Load Capacity5,000 N+15% (5,750 N)+30% (6,500 N)*
Thermal Resistance250°C280°C300°C
Material GradeASTM A234Premium alloy (custom)Aerospace-grade alloy
Friction Coefficient0.120.090.06

Supplier's note

  1. Technical Breakthroughs:

    • Aerospace-grade alloy (Pro Model): Tripled thermal resistance vs. industry standards, enabling stable operation in extreme environments.
    • Low-friction coating: Reduces wear by 40%, extending bearing lifespan.
    • Precision tolerances: ±0.005mm alignment ensures minimal clearance gaps for optimal power transfer.

  2. Version Selection Guidance:

    • Base Model: Ideal for standard-duty engines (e.g., light commercial vehicles) requiring cost-effective replacements.
    • Advanced Model: Suitable for medium-duty applications (e.g., agricultural machinery) needing enhanced thermal and load resilience.
    • Pro Model: Recommended for heavy-duty engines (e.g., mining equipment) where extreme durability and efficiency are critical. With its aerospace-grade alloy, the Pro Model outperforms competitors by 20% in fatigue resistance tests.

Frequently asked questions

  • Which Cummins engine models are compatible with part numbers 3939390 and 3939380?

  • How do I maintain Cummins connecting rod bearings for optimal longevity?

  • Why are Cummins connecting rod bearings made of high-strength alloy instead of standard steel?

  • Can Cummins connecting rod bearings be customized for non-standard engine configurations?

  • Are these bearings certified for use in high-temperature diesel engines?

  • What makes these bearings suitable for Cummins diesel engines compared to generic alternatives?

  • How do the part numbers 3939390 and 3939380 differ in application?

  • What warranty protections come with Cummins connecting rod bearings?

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