Skip to content
  • HOME
  • SHOP
    • Brake Master Cylinders
    • Clutch Master Cylinders
    • Clutch Slave Cylinders
    • Hydromax Brake Boosters
    • Master Cylinders for Hydromax
    • Wheel Cylinders
    • Medium Duty Truck Brake Calipers
    • Truck Flywheels – Medium Duty & Semi Truck
    • 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
    • Brake Repair & Service San Antonio, TX
    • CLUTCH REPAIR SERVICE – Expert Car Clutch Solutions
    • Check Engine Light Diagnostics San Antonio TX | Engine Repair Specialists
    • Car & Truck AC Repair San Antonio TX
    • Truck Fleet Service & Maintenance San Antonio, TX
    • truck brake repair – Comprehensive Truck Brake Services
    • Texas DOT & FMCSA Commercial Truck Inspections San Antonio, TX
    • PREVENTIVE MAINTENANCE – Commercial Vehicle Upkeep
    • Diesel Repair San Antonio, TX | Truck Diagnostics & Service
  • Sign up for Newsletter

    Signup for our newsletter to get notified about sales and new products. Add any text here or remove it.

    Automotive Brake and ClutchAutomotive Brake and Clutch
    • HOME
    • SHOP
      • Brake Master Cylinders
      • Clutch Master Cylinders
      • Clutch Slave Cylinders
      • Hydromax Brake Boosters
      • Master Cylinders for Hydromax
      • Wheel Cylinders
      • Medium Duty Truck Brake Calipers
      • Truck Flywheels – Medium Duty & Semi Truck
      • 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
      • Brake Repair & Service San Antonio, TX
      • CLUTCH REPAIR SERVICE – Expert Car Clutch Solutions
      • Check Engine Light Diagnostics San Antonio TX | Engine Repair Specialists
      • Car & Truck AC Repair San Antonio TX
      • Truck Fleet Service & Maintenance San Antonio, TX
      • truck brake repair – Comprehensive Truck Brake Services
      • Texas DOT & FMCSA Commercial Truck Inspections San Antonio, TX
      • PREVENTIVE MAINTENANCE – Commercial Vehicle Upkeep
      • Diesel Repair San Antonio, TX | Truck Diagnostics & Service
    • Login
    • Cart / $0.00 0
      • No products in the cart.

        Return to shop

    • 0
      Cart

      No products in the cart.

      Return to shop

    Add to wishlist
    Hydromax Flow Switch Adapter SKU 529999 for converting 1-pin legacy boosters Casting 2771293, 2771371, 2771424, and 2771819 to modern 2772114 units.
    Home / Hydromax Brake Boosters
    abc dynamics

    Hydromax Flow Switch Adapter

    • NEW Hydromax brake booster casting 2772114 and 0204745907 for International 4300 and 4400 trucks.
    • Pair of premium Oval O-ring seals for Bendix Hydromax brake booster pump and motor interface.

    $25.00

    SKU: 529999 Category: Hydromax Brake Boosters Brand: abc dynamics
    • NEW Hydromax brake booster casting 2772114 and 0204745907 for International 4300 and 4400 trucks.
    • Pair of premium Oval O-ring seals for Bendix Hydromax brake booster pump and motor interface.
    Browse
    • Brake Master Cylinder Repair Kits
    • Brake Master Cylinders
    • Clutch Master Cylinders
    • Clutch Slave Cylinders
    • Hydromax Brake Boosters
    • Master Cylinders for Hydromax
    • Medium Duty Truck Brake Calipers
    • Parking Brake Shoes for Medium Duty Trucks
    • Parts by Application
    • Truck Flywheels - Medium Duty & Semi Truck
    • VIEW ALL PRODUCTS
    • Wheel Cylinders

    Hydromax Flow Switch Adapter | Conversion Hardware

    SKU: 529999

    Automotive & Industrial Solution

    ABC Dynamics: Bridging the Gap for Modern Hydromax Integration.

    This Hydromax Flow Switch Adapter is the essential hardware solution for retrofitting modern Hydromax units (Casting #2772114) into older chassis. It allows for a seamless electrical transition when replacing legacy 1-pin Hydromax boosters.

    Engineered for both heavy-duty automotive fleets and industrial equipment, this adapter ensures that your flow switch safety system remains fully functional when upgrading your braking hardware.

    Compatibility & Casting Cross-Reference

    Spec Identifier Detail Application Note
    Primary Function 1-Pin to Multi-Pin Conversion Adapts modern #2772114 units to legacy wiring.
    Legacy Casting Fits 2771293, 2771371, 2771424, 2771819 Verified for Ford, International, & Industrial units.
    Installation Type Plug-and-Play Ensures electrical signal for flow switch monitoring.

    ⚠ Technical Fitment Warning

    While this adapter solves the electrical connection, physical clearance must be verified for specific swaps:

    • Motor Clearance: When replacing boosters with casting numbers 2771293 or 2771371, you must verify sufficient clearance for the backup motor.
    • Mounting Patterns: Older units often feature offset bolts, whereas modern units use center bolts. Ensure your chassis can accommodate the change in backup motor orientation.

    Technical Guidance

    Upgrading a legacy Hydromax system? Our technical manual provides full system wiring and pressure specifications.


    Download Technical Manual

    ABC Dynamics Logo

    Hydromax Flow Switch Adapter

    Precision Hardware for Modern Fleet & Industrial Integration

    Weight 1 lbs
    Dimensions 8 × 6 × 1 in

    Related Products

      Pair of premium Oval O-ring seals for Bendix Hydromax brake booster pump and motor interface.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      Hydromax Booster Oval Pump O-Rings (Pair) | SKU 277093288

      $12.00
      Hydromax pedal rod grommet SKU 27-190 for brake booster linkage. Photo displays two views of the item for identification; listing is for one individual grommet.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      Hydromax Pedal Rod Grommet | Replacement Retention Bushing | SKU 27-190

      $15.00
      NEW Hydromax brake booster casting 2772114 and 0204745907 for International 4300 and 4400 trucks.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      2772114 HYDROMAX BOOSTER 4300 4400 International Freightliner MB55 MT45 MT55

      $400.00
      Side view of Hydromax Booster 2772114 showing overall unit length and cylinder housing.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      NEW Hydromax Booster Casting #2772114 | Ford F650 F750 Hino 268 338

      $450.00
      Brand new Hydromax Booster 2772114 featuring a threaded pedal rod for automotive and industrial use.
      Add to wishlist
      Quick View
      Out of stock

      Hydromax Brake Boosters

      NEW Hydromax Booster Casting #2772114 | 1/2-inch Threaded Rod

      $450.00
      New Hydromax Brake Booster (2772114) replacement unit for Ford F53, F59, F650, and F750 Super Duty Trucks.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      Hydromax Brake Booster (Casting #2772114) – Direct Replacement for Ford F53, F59, F650, F750 Super Duty Chassis

      $400.00
      Technical view of the Hydromax System Relay showing the schematic diagram and pin identification.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      Hydromax System Relay | Power Assist Restoration Component

      $33.27
      Brand new Hydromax Booster 2772114 featuring a threaded pedal rod for automotive and industrial use.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      NEW Hydromax Booster Casting #2772114 | 3/8-inch Threaded Rod

      $450.00
      A new replacement Hydromax brake booster for GMC, Chevy, and Isuzu trucks, showing the long single-eyelet pedal rod.
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      2772114 HYDROMAX LONG PEDAL ROD GMC CHEVY ISUZU

      $400.00
      Hydromax-Booster-Casting-2772114-SKU-52981063-1
      Add to wishlist
      Quick View

      Hydromax Brake Boosters

      Casting #2772114 Hydromax Booster | Workhorse W16-W62 & Industrial | OEM W8831710 | Rod Stamp #222062

      $400.00
    About us

    Ready to Find the Right Clutch or Brake Solution? Request a Quote

    Clutch and Brake Solutions for **Industrial Equipment** and **Automotive Applications**.
    5241 Old Seguin Rd San Antonio Tx 78219            +1 210.661.9658 contact@automotivebrakeandclutch.com
    © 2025 Automotive Brake & Clutch Dynamics | All Rights Reserved.

     

    SAVE 10% ON ONLINE PART PURCHASES Valid for Industrial & Automotive orders placed on our web store

    AUTOMOTIVE10
    Visa
    PayPal
    Stripe
    MasterCard
    Cash On Delivery
    • About Us
    • PRIVACY POLICY
    • SHIPPING POLICY
    • TERMS & CONDITIONS
    • BILLING TERMS & CONDITIONS
    • RETURN AND REFUND POLICY
    • CORE RETURN POLICY
    • NEWSLETTER
    • CONTACT US
    Copyright 2026 ©
    • HOME
    • SHOP
      • Brake Master Cylinders
      • Clutch Master Cylinders
      • Clutch Slave Cylinders
      • Hydromax Brake Boosters
      • Master Cylinders for Hydromax
      • Wheel Cylinders
      • Medium Duty Truck Brake Calipers
      • Truck Flywheels – Medium Duty & Semi Truck
      • 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
      • Brake Repair & Service San Antonio, TX
      • CLUTCH REPAIR SERVICE – Expert Car Clutch Solutions
      • Check Engine Light Diagnostics San Antonio TX | Engine Repair Specialists
      • Car & Truck AC Repair San Antonio TX
      • Truck Fleet Service & Maintenance San Antonio, TX
      • truck brake repair – Comprehensive Truck Brake Services
      • Texas DOT & FMCSA Commercial Truck Inspections San Antonio, TX
      • PREVENTIVE MAINTENANCE – Commercial Vehicle Upkeep
      • Diesel Repair San Antonio, TX | Truck Diagnostics & Service
    • Login

    Login

    Lost your password?