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    NEW Hydromax brake booster casting 2772114 with long round forked pedal rod for International 3800 school bus.
    Rear view of Hydromax booster 2772114 showing the multi-pin flow switch port.
    New Hydromax booster 2772114 for International 3800 bus and Freightliner medium duty trucks.
    NEW Hydromax brake booster casting 2772114 with long round forked pedal rod for International 3800 school bus.
    hydromax booster
    NEW Hydromax brake booster casting 2772114 with long round forked pedal rod for International 3800 school bus.
    Rear view of Hydromax booster 2772114 showing the multi-pin flow switch port.
    New Hydromax booster 2772114 for International 3800 bus and Freightliner medium duty trucks.
    NEW Hydromax brake booster casting 2772114 with long round forked pedal rod for International 3800 school bus.
    hydromax booster
    Home / VIEW ALL PRODUCTS
    abc dynamics

    NEW Hydromax Booster Casting #2772114 | International Bus 3800, 3900FC

    • BRAKE MASTER CYLINDER 2230605 INTERNATIONAL
    • BRAKE MASTER CYLINDER FE33502

    $400.00

    SKU: 52991777 Categories: Hydromax Brake Boosters, VIEW ALL PRODUCTS Brand: abc dynamics
    • BRAKE MASTER CYLINDER 2230605 INTERNATIONAL
    • BRAKE MASTER CYLINDER FE33502
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    NEW Hydromax Booster | Casting #2772114 | Long Round Forked Rod

    SKU: 52991777

    International Bus & Freightliner Grade

    ABC Dynamics: Precision Braking for School Bus Fleets and Industrial Chassis.

    Restore your vehicle’s braking power with this brand new Hydromax Brake Booster. This direct replacement unit is specifically engineered for International Bus, School Bus, and Freightliner models that utilize a long forked, round-end pedal rod configuration.

    Designed for uncompromising performance in both automotive and heavy-duty industrial environments, this unit ensures reliable hydraulic assist for safety-critical transportation.

    Technical Specifications

    Spec Identifier Detail Application Note
    Condition NEW Non-remanufactured, factory fresh component.
    Casting Numbers 2772114 / 0204745907 Primary cross-reference for fitment verification.
    Pedal Rod Type Long Forked, Round End Pre-installed; verify linkage style before ordering.
    Sealing Hardware Oval O-Rings Included Ensures a high-pressure seal for the backup pump motor.

    Verified Bus & Truck Applications

    International Bus Series

    • 3000, 3000FE, 3400 Series
    • 3600, 3700, 3800 Series
    • 3900FC & School Bus Chassis

    Freightliner & Fleet

    • Compatible Freightliner S-Series
    • Medium-Duty Industrial Chassis
    • Legacy 1-Pin Retrofits (Adapter Required)

    ⚠ Critical Installation Information

    • Legacy Conversion: If you are replacing an older style Hydromax (Casting #2771424 or #2771819) with a 1-pin flow switch, you MUST purchase Flow Switch Adapter SKU# 529999.
    • Hardware Note: Oval O-rings for the pump motor are included. However, some mounting studs or nuts may need to be reused from your original unit.
    • Core Refund: Return your old, like-for-like core within 90 days to receive a $50.00 refund.

    Technical Resources

    Access system wiring and full maintenance procedures in the technical manual.


    Download Technical Manual

    ABC Dynamics Logo

    Hydromax Booster #2772114

    Reliable Safety for Bus Fleets and Industrial Equipment

    Weight 8 lbs
    Dimensions 13 × 8 × 6 in

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      • Parking Brake Shoes for Medium Duty Trucks
    • Trusted Auto & Truck Repair
      • Meet the Automotive Brake & Clutch Specialist Team
      • Full Service Auto & Truck Repair Shop San Antonio TX
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      • CLUTCH REPAIR SERVICE – Expert Car Clutch Solutions
      • Check Engine Light Diagnostics San Antonio TX | Engine Repair Specialists
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      • truck brake repair – Comprehensive Truck Brake Services
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      • PREVENTIVE MAINTENANCE – Commercial Vehicle Upkeep
      • Diesel Repair San Antonio, TX | Truck Diagnostics & Service
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