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    Heavy-Duty Brake Master Cylinder with a 1-1/2" bore, a direct replacement for FD2704 and FE2704.
    Side view of the ABC Dynamics brake master cylinder, showing the robust casting and mounting points for secure installation.
    Top view of the ABC Dynamics Heavy-Duty Brake Master Cylinder, showing the easy-access filler cap and protective boot.
    Close-up of the precision outlet ports on the ABC Dynamics 1-1/2" bore master cylinder.
    Diagram showing the 2 1/2" piston depth of the ABC Dynamics brake master cylinder for compatibility verification.
    A visual comparison of the ABC Dynamics piston and the incompatible flat-style pistons from Mico.
    Heavy-Duty Brake Master Cylinder with a 1-1/2
    Side view of the ABC Dynamics brake master cylinder, showing the robust casting and mounting points for secure installation.
    Top view of the ABC Dynamics Heavy-Duty Brake Master Cylinder, showing the easy-access filler cap and protective boot.
    Close-up of the precision outlet ports on the ABC Dynamics 1-1/2
    Diagram showing the 2 1/2
    A visual comparison of the ABC Dynamics piston and the incompatible flat-style pistons from Mico.
    Home / VIEW ALL PRODUCTS
    Bexar Pro Componets

    New Brake Master Cylinder 1-1/2-inch bore size FD2704 FE2704 FE2707 2704

    • BRAKE MASTER CYLINDER 2230600 GM CHEVROLET
    • Side view of Bexar Pro Hydromax brake booster casting 2771371 for Ford medium-duty trucks.

    $122.20

    SKU: M66177 Categories: Brake Master Cylinders, VIEW ALL PRODUCTS Brand: Bexar Pro Componets
    • BRAKE MASTER CYLINDER 2230600 GM CHEVROLET
    • Side view of Bexar Pro Hydromax brake booster casting 2771371 for Ford medium-duty trucks.
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    • VIEW ALL PRODUCTS
    • Wheel Cylinders

    New Brake Master Cylinder 1-1/2-inch bore size FD2704 FE2704 FE2707 2704

    Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.

    Restore your braking system to peak performance with the M66177 Master Cylinder from Bexar Pro Components. Engineered with a precision 1-1/2-inch bore and high-grade materials, this unit is built for the rugged demands of heavy-duty fleet reliability, making it the ideal solution for both industrial equipment and specialized automotive systems.

    Key Specifications & Expert Features

    • Bore Diameter: 1-1/2-inch bore size (Critical for pressure calibration)
    • Piston Depth: 2-1/2″ (Deep cup piston—verify against existing unit)
    • Outlet Size: 1/8″ NPT (Primary) | 1/2-20 (Outlets 2 & 3)
    • Application: Heavy-duty forklifts, graders, and industrial machinery.
    • Companion Repair Kit: 39MK (View Compatible Kit)

    Verified Casting & Part Numbers

    Matching your existing part number is the most reliable method to ensure correct fitment. This unit replaces:

    • FD2704
    • FE2704
    • FE2707
    • 2704
    • 2704C
    • 616812
    • 618112

    Expert Installation & Field Note

    Based on our shop experience specializing in heavy-duty brakes since 1985: Improper pushrod alignment is the leading cause of “spongy” pedal feel or premature seal failure. On heavy machinery like motor graders, ensure total linkage alignment to prevent side-loading. Our M66177 housing uses a specialized honing process for superior bore integrity, outlasting standard industrial replacements.

    ⚠ CRITICAL: Verify Specifications

    To ensure safety, verify that this master cylinder’s 1-1/2-inch bore size and 2-1/2″ deep cup piston match your existing unit.

    NOT for Wagner Power Masters (flat-style piston) or Mico Cylinders (flat reaction piston – See last picture). Check your internal components before ordering.

    Bexar Pro Components

    Bexar Pro Components

    SKU: M66177

    Official Master Cylinder Installation Guide
    Weight 8 lbs
    Dimensions 8 × 6 × 4 in

    Related Products

    Bexar Pro 39MK master cylinder repair kit for part number M66177.
    Add to wishlist
    Quick View
    Out of stock

    Brake Master Cylinder Repair Kits

    MC KIT 39MK

    $55.00
    MICO POWER MASTER
    Add to wishlist
    Quick View

    Brake Master Cylinders

    New Mico Power Master Cylinder FD2704 FE2704

    $424.71
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    ABC Dynamics - San Antonio Truck and Industrial Repair

    Engineered solutions for Industrial Equipment and Automotive Applications since 1985.

    Expert Contact

    📍 5241 Old Seguin Rd, San Antonio, TX 78219
    📞 (210) 661-9658
    ✉️ contact@automotivebrakeandclutch.com

    Authority

    ✓ Texas DPS Certified Station
    ✓ Authorized NAPA TruckCare
    ✓ CARFAX® Verified Service

    San Antonio Metro & Regional Industrial Hubs

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