Description
New Brake Master Cylinder 1-1/8-inch bore size 3769215 3769216 29786C
Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.
Key Specifications & Expert Features
- Bore Diameter: 1-1/8-inch bore size (Optimal displacement for large caliper systems)
- Outlet Size: 7/16-24 Dual Ports (Standard thread for direct line connection)
- Application: Heavy-duty Chevy/GMC trucks and industrial machinery.
- Companion Repair Kit: 253MK (View Compatible Kit)
Verified Casting & Part Numbers
Matching your existing part number is the most reliable method to ensure correct fitment. This unit replaces:
- 3769215
- 3769216
- 29786C
- 29788C
Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985: Due to the variety of fittings used on trucks and equipment of this vintage, it is vital to confirm your 7/16-24 thread size. Improper pushrod alignment is the leading cause of “spongy” pedal feel or premature seal failure. Ensure total linkage alignment to prevent side-loading and maximize cylinder life. Always bench bleed the 1-1/8-inch bore galleries before final installation to ensure optimal braking response.
⚠ CRITICAL: Verify Specifications
To ensure safety, verify that this master cylinder’s 1-1/8-inch bore size, dual port configuration, and 7/16-24 threads match your existing unit before purchasing. Proper displacement is essential for automotive and industrial safety.
