New Brake Master Cylinder 1-1/16-inch bore size FE23128 23128 23128C
Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.
Key Specifications & Expert Features
- Bore Diameter: 1-1/16-inch bore size (Critical for accurate pressure calibration)
- Outlet Size: 1/2-20 INV (Standard thread for direct line connection)
- Application: Performance trucks and heavy industrial equipment.
- Companion Repair Kit: 207MK (View Compatible Kit)
- Clutch Master Version: See CM2551768 (Uses same casting)
Verified Casting & Part Numbers
Matching your existing part number is the most reliable method to ensure correct fitment. This unit replaces:
- FE23128
- 23128
- 23128C
- 5461304
- 616703
- 617076
- 64
Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985: Whether installing on a classic vehicle or a piece of industrial equipment, ensure the pushrod length and linkage alignment are correct. Improper adjustment is the leading cause of spongy brake pedal feel due to seal damage. Our master cylinder features a specially honed bore to resist wear, ensuring your new seals last longer when paired with proper installation and a complete system bleed.
⚠ CRITICAL: Verify Specifications
To ensure safety, verify that this master cylinder’s 1-1/16-inch bore size and 1/2″ outlet size match your existing unit exactly before purchasing. Accurate displacement is required for proper automotive and industrial function.










