Description
New Brake Master Cylinder 1-5/16-inch bore size 2229071 29979C
Bexar Pro Components: Heavy-Duty Reliability for Fleet & Industry.
Key Specifications & Expert Features
- Bore Diameter: 1-5/16-inch bore size (Critical for high-volume fluid displacement)
- Outlet Sizes: 1/2-20 INV and 9/16-18 INV (Dual thread sizes for heavy-duty systems)
- Application: Hydraulic braking circuits on commercial trucks, buses, and heavy equipment.
- Companion Repair Kit: 899MK (View Compatible Kit)
Verified Casting & Part Numbers
Matching your existing part number is the most reliable method to ensure correct fitment. This unit replaces:
- 2229071
- 29979C
Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes since 1985: The 1-5/16-inch bore is essential for large commercial vehicle pressure requirements. Due to the two distinct outlet thread sizes (1/2-20 and 9/16-18), meticulously verify which hydraulic lines connect to which port on your original cylinder before removal. Improper plumbing or poor pushrod alignment will lead to brake imbalance and premature seal wear in industrial environments.
⚠ CRITICAL: Verify Specifications
To ensure safety, verify that this master cylinder’s 1-5/16-inch bore size and dual 1/2-20 & 9/16-18 INV outlets match your existing unit before purchasing.
