Top view of the 1-1/8" bore dual port brake master cylinder, showing the reservoir and boots.

Main view of the 1-1/8" Bore Dual Port Brake Master Cylinder from ABC Dynamics.

Close-up view of the 1 1/8" bore size on the ABC Dynamics master cylinder.

Image showing the two 7/16"-24 line ports on the ABC Dynamics brake master cylinder.

New Dual Port Brake & Clutch Master Cylinder 1-1/4-inch bore size 5462223 618746

Name: New Dual Port Brake &amp; Clutch Master Cylinder 1-1/4-inch bore size 5462223 618746
Brand: Bexar Pro Componets
SKU: M1908974
Availability: InStock

$198.30

SKU: M1908974 Categories: Brake Master Cylinders, Clutch Master Cylinders, VIEW ALL PRODUCTS Brand: Bexar Pro Componets

New Dual Port Brake & Clutch Master Cylinder 1-1/4-inch bore size 5462223 618746

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

Ensure your hydraulic system—both brake and clutch circuits—is operating at peak performance with the M1908974 Dual Port Master Cylinder from Bexar Pro Components. Engineered with a precision 1-1/4-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 automotive applications.

Key Specifications & Expert Features

Bore Diameter: 1-1/4-inch bore size (Essential for heavy-duty pressure calibration)
Outlet Size: 7/16″-24 INV (Standard inverted flare thread for direct line connection)
Application: Suitable for both Brake and Clutch hydraulic systems.
Equipment Use: Designed for medium-duty trucks, specialty automobiles, and industrial machinery.

Verified Casting & Part Numbers

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

5462223
618746
29788-C
29788
3773856

Expert Installation & Field Note

Based on our shop experience specializing in heavy-duty brakes since 1985: Improper pushrod alignment is the leading cause of “spongy” pedal feel or premature seal failure. When installing on industrial equipment or fleet vehicles, ensure total linkage alignment to prevent side-loading the piston. This 1-1/4-inch bore size requires precise stroke travel to maximize cylinder life and maintain consistent hydraulic displacement. Always bench bleed the unit to purge all air from the bore galleries before final installation.

⚠ CRITICAL: Verify Specifications

To ensure safety, verify that this master cylinder’s 1-1/4-inch bore size and 7/16″-24 INV outlet match your existing unit exactly before purchasing. Proper displacement is essential for automotive and industrial braking safety.