New Brake Master Cylinder 1-1/8-inch bore size 3769215 3769216 29786C

New Brake Master Cylinder 1-1/8-inch bore size 3769215 3769216 29786C Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry. Restore superior hydraulic control to your braking system with the M8716721 Master Cylinder from Bexar Pro Components. Engineered with a precision 1-1/8-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 classic Chevy/GMC trucks and various types of industrial equipment. 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. Bexar Pro Components SKU: M8716721 Official Master Cylinder Installation Guide Clutch Master Cylinder Installation Guide