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  • L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part
  • L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part
  • L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part
L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part

L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part

  • 1 - 49 Pieces
    $5
  • >= 50 Pieces
    $2
View product details

L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Valve Spring Operation: Ensures precise valve closure in diesel engines by providing consistent force to maintain sealing integrity under high pressure and temperature.
  • Component Coordination: Includes valve springs, retainers, and guides to regulate valve alignment, movement, and sealing, critical for engine efficiency and longevity.

Key features

  • 1. Material Technology

    • With high-carbon steel construction, ensure durability under extreme engine temperatures and pressures. The valve springs, retainers, and guides are forged from steel to resist deformation and wear, outlasting generic aftermarket alternatives*.

  • 2. Scenario Solutions

    • Complete valve train kit simplifies engine maintenance and repair processes. Pre-packaged valve springs, retainers, and guides streamline assembly for both diesel engine overhauls and emergency part replacements.

  • 3. Performance Parameters

    • Precision-engineered valve springs deliver consistent force retention, ensuring reliable valve closure in high-compression Yanmar diesel engines. Designed for compatibility with varying RPM ranges and load conditions.

  • 4. Factory Direct Advantage

    • Factory-direct sourcing ensures cost-effective pricing compared to aftermarket distributors*. Bypasses middlemen while maintaining OEM-grade quality for professional mechanics and DIY enthusiasts.

  • 5. Certification Standards

    • Engineered to OEM specifications for Yanmar diesel engines, guaranteeing seamless fitment and performance. Meets automotive industry standards for material resilience and dimensional accuracy.

Product details

L90 Factory Direct Sales Valve Spring Kit Spring Seat & Retainer for Yanmar Engine Part

The L90 Valve Spring Kit includes high-performance valve springs, retainers, and guides engineered for Yanmar diesel engines. Crafted from durable steel, these components ensure precise valve operation, optimal sealing, and prolonged engine longevity. Designed for direct OEM compatibility, this kit is essential for maintaining or overhauling diesel engine valve train systems.

Technical specifications

FeatureSpecificationBenefit
MaterialCarbon steel (heat-treated)Withstands extreme engine temperatures and pressures
CompatibilityFits Yanmar L90 diesel enginesEnsures seamless integration with OEM systems
Durability10,000+ cycles fatigue resistanceReduces wear and extends engine service life
Heat ResistanceUp to 450°CMaintains structural integrity in high-temperature zones

Customization guide

Adjustable spring tension and retainer dimensions to meet specific engine compression requirements. Custom coatings (e.g., nitriding) available for enhanced corrosion resistance in harsh environments.

Get inspired

With precision-engineered valve springs, you can achieve smoother engine combustion and reduced valve float. The steel guides ensure consistent alignment, minimizing oil leakage and enhancing fuel efficiency.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Spring Force120 N+15% (138 N)+30% (156 N)*
Heat Resistance450°C480°C520°C
Fatigue Life10,000 cycles12,000 cycles15,000 cycles

Supplier's note

  1. Technical Breakthroughs:

    • Enhanced Spring Force: The Pro Model’s 156 N force outperforms industry standards, enabling stable valve operation at higher RPMs.
    • Extreme Heat Tolerance: The Pro’s 520°C resistance surpasses OEM specifications, critical for heavy-duty diesel applications.
    • Extended Fatigue Life: The Advanced Model’s 12,000-cycle durability reduces replacement frequency by 20% compared to traditional kits.

  2. Version Selection Guidance:

    • Base Model: Ideal for routine maintenance of standard-duty Yanmar engines.
    • Advanced Model: Suitable for agricultural or industrial engines requiring moderate load endurance.
    • Pro Model: Engineered for high-performance marine or commercial diesel engines, where prolonged exposure to extreme conditions is common.

*Pro Model’s specifications exceed ISO 9021:2020 standards for valve spring endurance.

Frequently asked questions

  • Which Yanmar diesel engine models are compatible with the L90 Valve Spring Kit?

  • How do I clean and maintain the valve springs and retainers?

  • Why choose steel valve springs over alternative materials for diesel engines?

  • Can the L90 Valve Spring Kit be customized for specific engine needs?

  • Are the valve springs and retainers certified for diesel engine use?

  • Do I need specialized tools to install the valve spring kit?

  • What’s the warranty period for the L90 Valve Spring Kit?

  • How long do the valve springs typically last in high-demand diesel engines?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Valve SpringsHeavy-duty diesel enginesLoad Capacity:
Industry (1500 N) ▲ Base (1600 N) ▲ Advanced (1800 N) (ASTM A228 compliant)		▲20% higher load ▸ Ensures precise valve seating under high pressureAdvanced version adds 200 N (heavier, may require engine recalibration)
Valve RetainersHigh-RPM industrial enginesTensile Strength:
Industry (800 MPa) ▲ Base (850 MPa) ▲ Advanced (900 MPa) (ISO 6892-1)		▲12.5% stronger ▸ Prevents spring loosening at extreme RPMAdvanced requires specialized installation tools (not included)
Valve GuidesHigh-temperature engine environmentsWear Resistance:
Industry (0.1mm/1000hrs) ▲ Base (0.08mm/1000hrs) ▲ Advanced (0.05mm/1000hrs) (ASTM G65)		▲50% less wear ▸ Extends engine service life by 30%Advanced guides cost 40% more than industry-standard parts
Material QualityCorrosive or high-heat industrial settingsSteel Grade:
Industry (SAE 1045) ▲ Base (SAE 1050) ▲ Advanced (SAE 1060) (ASTM A228)		▲20% higher hardness ▸ Resists oxidation at 500°C+Advanced-grade steel may require custom machining for retrofitting
CompatibilityYanmar engine repair/upgradeFitment Precision:
Industry (±0.5mm) ▲ Base (±0.3mm) ▲ Advanced (±0.1mm) (ISO 9001 certified)		▲40% tighter tolerance ▸ Eliminates vibration risksAdvanced kit only fits Yanmar 4TNV/4TE models (not all Yanmar engines)
Packaging & DurabilityTransport/storage in humid regionsMoisture Resistance:
Industry (50% RH) ▲ Base (80% RH) ▲ Advanced (95% RH) (ASTM D3951)		▲90% corrosion protection ▸ Safeguards components during ocean shipmentAdvanced packaging adds 15% to total product weight

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