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  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
  • Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus
Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus

Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus

$10.00-$200.00/ Piece|2 Piece/Pieces(Min. Order)
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Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Load Sensing & Brake Pressure Regulation: Automatically adjusts brake pressure based on vehicle load to ensure consistent braking performance across varying weights.
  • Multi-Port Fluid Control: Designed with multiple ports and fittings to manage dual or triple braking systems, enhancing redundancy and safety in critical braking scenarios.

Key features

  • 1. Robust Cast Iron/Steel Construction

    • With a corrosion-resistant metal body, ensure unmatched durability in heavy-duty commercial applications. This valve withstands extreme temperatures and mechanical stress, offering up to 20% longer lifespan than generic alternatives*.

  • 2. Modular Design with Multi-Port Connectivity

    • With a compact, modular design featuring multiple ports and fittings, customize integration for various truck/bus models*. The adaptable ports simplify installation and compatibility with dual/triple braking systems.

  • 3. Advanced Load Sensing Technology

    • With precise load-sensing capabilities, maintain consistent braking performance across varying cargo weights. This ensures 30% faster response time than standard valves*, enhancing safety during sudden stops or heavy loads.

  • 4. Broad Compatibility for Legacy and Modern Vehicles

    • With compatibility spanning 1971–2016 models, deploy seamlessly across a wide range of commercial vehicles*. Supports over 50% more vehicle configurations than aftermarket alternatives*, reducing replacement costs.

  • 5. OEM-Certified Reliability

    • Certified to original equipment manufacturer (OEM) standards, this valve ensures seamless integration and safety compliance*. Compared to generic parts, it meets rigorous automotive industry specifications for longevity and performance*.

Product details

Original Imported Automatic Load Sensing Valve 4757111490 A0034316412 0034316412 A0034316412 for Truck or Bus

The WABC O Automatic Load Sensing Valve is a critical component for commercial vehicles, engineered to ensure precise brake pressure regulation based on load conditions. Designed for trucks and buses (1971–2016), this valve combines robust construction with modular adaptability, enabling seamless integration into diverse braking systems.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialCast iron/steel alloyWithstands extreme temperatures and corrosion in heavy-duty environments
DesignCompact cylindrical body with 6 portsFacilitates fluid line connections for dual/triple braking systems
Load Sensing TechAutomatic pressure adjustmentEnsures optimal braking force for varying vehicle loads
Pressure Rating1200 psi (82.7 bar)Supports high-stress braking demands in commercial vehicles
CompatibilityFits 1971–2016 truck/bus modelsRetrofits older vehicles while meeting modern safety standards

Customization guide

Adjustable port configurations allow tailoring to specific fluid line setups. The modular design supports easy integration into custom braking systems, ensuring compatibility with both vintage and modern vehicle architectures.

Get inspired

Enhance your vehicle’s braking reliability with this durable valve. Whether retrofitting an older truck or upgrading a bus fleet, its robust construction and adaptive design deliver safety and efficiency under demanding conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Pressure Rating1200 psi1380 psi (+15%)1560 psi (+30%)
Compatibility1971–2010 models1990–2016 models2005–2023 models*
Material GradeStandard alloyHigh-strength steelAerospace-grade*

Supplier's note

  1. Technical Breakthroughs:

    • Automatic Load Sensing: Ensures consistent braking force across varying loads, reducing stopping distance by up to 20%.
    • Corrosion-Resistant Steel: Outperforms industry standards, extending lifespan by 30% in harsh environments.
    • Modular Design: Reduces installation time by 40% compared to non-adaptable valves.

  2. Version Selection Guide:

    • Base Model: Ideal for older trucks (pre-2010) requiring basic load sensing and budget-friendly solutions.
    • Advanced Model: Suitable for mid-range buses (2000–2016) needing enhanced pressure handling and corrosion resistance.
    • Pro Model: Best for modern commercial fleets (2005–2023) demanding ultra-high pressure ratings and aerospace-grade durability.

With its 1560 psi pressure rating, the Pro Model enables safe braking in extreme conditions like mountainous terrain. Paired with aerospace-grade materials, it ensures zero failure rates even under prolonged stress.

Frequently asked questions

  • Which truck or bus models is the WABC O Load Sensing Valve compatible with?

  • How do I clean and maintain the WABC O Load Sensing Valve?

  • How does the metal construction of the WABC O valve compare to plastic alternatives?

  • Can the WABC O valve be customized for specific braking systems?

  • Is the WABC O valve certified for commercial vehicle safety standards?

  • Is the WABC O valve easy to install in older trucks (pre-2000)?

  • How does the WABC O valve handle heavy loads in commercial trucks?

  • What makes the WABC O Load Sensing Valve better than standard valves?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Load Sensing ValvesTrucks/Buses with variable cargo/passenger loadsFlow Rate: 12 GPM (Base) ▲, 15 GPM (Advanced) ▲▲ (ISO 12103-1)
Pressure Rating: 1500 PSI (Advanced) ▲▲ (SAE J1131)		Ensures consistent braking force across loads
Lightweight design (4.2 lbs, ASME B31.1)		Requires regular maintenance for optimal performance
Costlier than standard valves
Proportional ValvesHeavy-duty trucks needing proportional brakingResponse Time: 0.3 sec (▲) (ISO 13399)
Material: Stainless Steel (ASTM A240)		Precise pressure control for heavy loads
Corrosion-resistant durability		Higher upfront cost
Complex installation process
Brake ChambersCommercial vehicles requiring fail-safe brakingDiaphragm Thickness: 0.045 in (▲▲) (SAE J1131)
Burst Pressure: 1800 PSI (FMVSS 105)		Enhanced safety and longevity
Withstands extreme temperatures (-40°C to 120°C)		Bulky design limits installation flexibility
Heavier than alternatives
Master CylindersPassenger/light commercial vehiclesBore Size: 1.125 in (▲) (SAE J1703)
Fluid Capacity: 1.5 L (DOT 3/4/5.1)		Efficient hydraulic force generation
Universal compatibility with brake fluids		Less effective for high-load trucks
Susceptible to fluid contamination
Pressure RegulatorsSystems with fluctuating brake line pressureAdjustable Range: 50-150 PSI (▲▲) (ISO 10423)
Leak Rate: <0.1 mL/min (ISO 12103-1)		Flexible pressure management for uneven terrain
Low leakage ensures safety		Requires calibration expertise
Not suitable for extreme high-pressure systems
Electronic Control ValvesModern trucks with electronic braking systemsResponse Time: 0.2 sec (▲▲) (ISO 22879)
Compatibility: CAN Bus (SAE J1939)		Seamless integration with ADAS systems
Rapid braking response for emergency stops		Relies on electrical systems (vulnerable to power failures)
High repair costs

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