Brass fittings with an automotive component.

Brake master cylinder component with metal housing.

Brake master cylinder with metal housing.

New Brake Master Cylinder 1-inch bore size FF78879 2225751 29868C

Name: New Brake Master Cylinder 1-inch bore size FF78879 2225751 29868C
Brand: Bexar Pro Componets
SKU: M7124512
Availability: InStock

$89.44

Fitment Lookup:

Select your vehicle to verify compatibility before ordering.

SKU: M7124512 Category: BPC - Brake Master Cylinders Brand: Bexar Pro Componets

New Brake Master Cylinder 1-inch bore size FF78879 2225751 29868C

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

Restore your braking system to peak performance with the M7124512 Master Cylinder from Bexar Pro Components. Engineered with a precision 1-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 applications.

Key Specifications & Expert Features

Bore Diameter: 1-inch bore size (Precision-honed for consistent hydraulic pressure)
Forward Outlet Size: 9/16″-18 INV (Secure inverted flare connection)
Rearward Outlet Size: 7/16″-24 INV (Standard thread for direct line connection)
Application: Optimized for heavy-duty fleet trucks and specialized industrial machinery.
Companion Repair Kit: N/A (Complete unit replacement recommended for maximum reliability)

Verified Casting & Part Numbers

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

FF78879
29868C
2225751
2226091
2227111
5460465
E1831
118
AD

Expert Installation & Field Note

Based on our shop experience specializing in heavy-duty brakes since 1985: When installing the M7124512, pay close attention to pushrod alignment. Misalignment is a primary cause of uneven internal seal wear, which can lead to premature bypass in fleet and industrial applications. Always bench bleed the unit before final installation to ensure a firm pedal and perform a complete system flush with fresh fluid to protect the precision 1-inch bore galleries.

⚠ CRITICAL: Verify Specifications

To ensure safety, verify that this master cylinder’s 1-inch bore size and dual inverted flare outlet ports match your existing unit exactly before purchasing. Correct displacement is essential for automotive and industrial safety.