Brake master cylinder for automotive applications.

New Brake Master Cylinder 1-1/4-inch bore size FE21721 5454330 21721C

Name: New Brake Master Cylinder 1-1/4-inch bore size FE21721 5454330 21721C
Brand: Bexar Pro Componets
SKU: M2169866
Availability: InStock

$224.86

Fitment Lookup:

Select your vehicle to verify compatibility before ordering.

SKU: M2169866 Category: BPC - Brake Master Cylinders Brand: Bexar Pro Componets

New Brake Master Cylinder 1-1/4-inch bore size FE21721 5454330 21721C

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

Restore your braking system to peak performance with the M2169866 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 (High-volume fluid displacement)
Outlet Size: 7/16-26 INV (Standard inverted flare connection)
Application: Heavy-duty commercial trucks and industrial machinery.
Companion Repair Kit: 33MK (View Compatible Kit)

Verified Casting & Part Numbers

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

FE21721
5454330
21721C
618108
3773856
FD21721

Expert Installation & Field Note

Based on our shop experience specializing in heavy-duty brakes since 1985: The 1-1/4-inch bore size is designed for high-pressure requirements in commercial and industrial settings. Pushrod alignment is absolutely critical to prevent seal scoring. When installing on heavy equipment, ensure the pushrod is perfectly centered within the piston pocket. Always perform a complete system bleed using fresh DOT fluid following installation.

⚠ CRITICAL: Verify Specifications

To ensure safety, verify that this master cylinder’s 1-1/4-inch bore size and 7/16-26 INV outlet match your existing unit exactly before purchasing.