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Heavy-Duty Brake Master Cylinder with a 1-1/2" bore, a direct replacement for FD2704 and FE2704.
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.
Side view of the ABC Dynamics brake master cylinder, showing the robust casting and mounting points for secure installation.
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
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
Side view of the ABC Dynamics brake master cylinder, showing the robust casting and mounting points for secure installation.
Diagram showing the 2 1/2
A visual comparison of the ABC Dynamics piston and the incompatible flat-style pistons from Mico.
abc dynamics

Brake Master Cylinder 1-1/2″ Bore – Replaces FE2704 FD2704

$122.20

SKU: M66177 Categories: , Brand:

Heavy-Duty Brake Master Cylinder 1-1/2″ Bore – Replaces FD2704, FE2704, and More

ABC Dynamics: Precision Parts for Uncompromising Performance.

Get your braking system back to peak performance with this brand new, heavy-duty brake master cylinder from **ABC Dynamics**. Engineered for a perfect fit and reliable stopping power, this unit is the ideal replacement for a wide range of popular industrial and heavy-equipment applications. Don’t compromise on safety—trust ABC Dynamics for quality you can feel with every stop.

Key Specifications & Features

     

  • Bore: 1 1/2″

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  • Piston Depth: 2 1/2″

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  • Outlet Sizes: 1/8″ -NPT, 1/2″-20, 1/2″-20

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  • Repair Kit: 39MK

Verified Casting & Part Numbers

This master cylinder is a confirmed replacement for the following casting numbers, ensuring you get the right part every time. Simply match your existing casting number to the list below:

     

  • FD2704

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  • FE2704

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  • FE2707

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  • 2704

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  • 2704C

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  • 45

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  • 616812

    •  

  • 618112

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  • 61A

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  • 8832

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  • S230

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  • B35

Important Compatibility Information

Please Read Before Purchasing: This master cylinder is NOT a direct replacement for:

     

  • **Wagner Power Master Cylinders:** These have a flat-style piston and a special reaction piston in the cylinder & flange that is also flat. Our unit features a 2 1/2″ depth piston.

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  • **Mico Cylinders:** While genuine Mico cylinders will have “MICO” stamped directly on the casing, some Mico units were built using a Wagner housing, which may be stamped with a 2704 casting number. It is critical to confirm that the master cylinder you are replacing does **not** have Mico internal parts, regardless of the casting number on the housing. Both Mico and Wagner cylinders utilize a special reaction piston in the cylinder & flange that is flat. For Mico replacements, please see part number M100135.

For motor graders and other heavy equipment, it is critical to verify your existing piston type. See the last picture for a visual comparison.

ABC Dynamics Logo

ABC Dynamics Part Number: M66177

View Installation Guide

Weight 8 lbs
Dimensions 8 × 8 × 4 in

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