Description
New Clutch Master Cylinder 1-1/16-inch bore size FE23128 5461304
Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.
Key Specifications & Expert Features
- Bore Diameter: 1-1/16-inch bore size (Critical for vehicle and equipment pressure calibration)
- Outlet Size: 1/2″ (Standard thread for direct line connection)
- Application: Optimized for medium-duty trucks and heavy industrial equipment.
- Companion Repair Kit: 207MK (View Compatible Kit)
- Cross-Reference: For the brake master version using this casting, see M2297590.
Verified Casting & Part Numbers
Matching your existing casting 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: When installing the CM2551768, ensure correct linkage alignment to prevent side-loading internal seals. If using the 207MK repair kit, do not install a check valve in the master cylinder unless one was present in your original core; adding a check valve to a non-valve system can cause poor pedal return. Always bench bleed the unit to purge air from the 1-1/16-inch bore galleries for a consistent, firm pedal feel in both automotive and industrial environments.
âš CRITICAL: Verify Specifications
To ensure proper hydraulic pressure and safety, verify that this master cylinder’s 1-1/16-inch bore size and 1/2″ outlet size match your existing unit exactly. This specification determines hydraulic displacement and is vital for safe operation.
