Description
New Brake Master Cylinder 1-1/2-inch bore size FE786 786
Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.
Key Specifications & Expert Features
- Bore Diameter: 1-1/2-inch bore size (Essential for maintaining high-volume hydraulic pressure)
- Outlet Size: 3/8-NPT & 1/4-NPT (Dual-port NPT configuration for robust plumbing)
- Application: Medium-duty fleet vehicles and specialized industrial machinery.
- Companion Repair Kit: 71MK (View Compatible Kit)
Verified Casting & Part Numbers
Matching your existing casting number is the most reliable method to ensure correct fitment. This unit replaces:
- FE786
- 786
Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985: The 1-1/2-inch bore size is a high-displacement specification. When installing the M78502, ensure your pushrod alignment is perfectly centered to prevent side-loading the internal seals. In industrial applications, pushrod misalignment is a frequent cause of premature seal failure. Always perform a thorough bench bleed before installation to ensure all air is removed from the cylinder galleries to maintain a firm pedal feel.
⚠ CRITICAL: Verify Specifications
To ensure safety, verify that this master cylinder’s 1-1/2-inch bore size and NPT outlet thread sizes match your existing unit exactly before purchasing. Proper hydraulic displacement is vital for braking performance.
