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Centric 130.82003 Brake Master Cylinder
| Brand | Centric 130.82003 |
|---|---|
| Reservoir Material | Plastic |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 4 |
| Master Cylinder Bore Diameter | 1.750 |
| Master Cylinder Bore Diameter | 44.450 |
| Brake Booster Included | No |
| Master Cylinder Cap Included | Yes |
| Master Cylinder Material | Cast iron |
| Push Rod Included | No |
| Reservoir Included | Yes |
| Reservoir Type | Single |
| Primary Outlet Thread Diameter | 0.5625 |
| Secondary Outlet Thread Diameter | 0.500 |
| Bleeder Hoses Included | No |
| Port Quantity | 2 |
| Mounting Bracket Included | No |
| Secondary Outlet Threads Per Inch | 20 |
| Primary Outlet Threads Per Inch | 18 |
| Bore Type | Straight |
| Bore Size | 1.750 |
| Bore Size | 44.450 |
| Secondary Outlet Thread Size | 1/2"-20 |
| Primary Outlet Thread Size | 9/16"-18 |
| Primary Outlet Flare Type | Inverted |
| Secondary Outlet Flare Type | Inverted |
| Primary Bore Diameter | 1.750 |
| Primary Bore Diameter | 44.450 |
| Reservoir Style | Removable |
| Boss, Nipple or Port: Front, Left: #A [cntrc] | 1/2"-20 inv |
| Boss, Nipple or Port: Rear: #A [cntrc] | 9/16"-18 inv |
| Fits | — |
OE-style replacement. Matches original equipment quality, configuration, and fitment.
Cast iron body. Provides a durable master cylinder housing with a removable reservoir.
Complete assembly. Includes reservoir and cap for a ready-to-install setup.
Cross-references Dorman - First Stop M12430, Raybestos Brakes MC390281 and 18M838 for the same application. See all 18.
Centric Premium Brake Master Cylinder 130.82003
The Centric Premium Brake Master Cylinder 130.82003 is built for drivers replacing a worn or leaking brake master cylinder with an OE-style hydraulic component. It matches original equipment quality, configuration, and fitment, with a cast iron body, single plastic reservoir, and a 1.750-inch bore for consistent brake pedal response.
Centric’s Premium Brake Master Cylinders are part of a complete brake hydraulics program covering master cylinders, wheel cylinders, brake hoses, repair kits, and remanufactured power boosters. This part number, 130.82003, is specified with a removable reservoir, cap included, and two inverted flare outlet ports for direct replacement service on supported applications.
Key Features
- OE-style brake master cylinder for hydraulic brake system repair
- Cast iron master cylinder body with plastic reservoir
- 1.750-inch bore diameter for proper hydraulic output
- Single removable reservoir with cap included
- Two outlet ports with inverted flare connections
- Four mounting holes for application-specific installation
- Primary outlet thread size: 9/16"-18
- Secondary outlet thread size: 1/2"-20
Detailed Description
Centric 130.82003 is a brake master cylinder engineered to match original equipment dimensions and port configuration where applicable. The straight bore design, 44.45 mm bore size, and dual inverted flare outlets support accurate hydraulic transfer in the brake system. For vehicle owners searching for a brake master cylinder for Chevrolet, GMC, or Cadillac applications, this part number is a direct-fit style replacement for supported vehicles that use the listed port and bore specifications.
This part cross-references Dorman First Stop M12430 for the same application. It is also associated with interchange references including 18M838 and MC390281.
What It Helps Fix
- Low or inconsistent brake pedal feel
- External brake fluid leakage from the master cylinder
- Internal hydraulic bypass causing pedal drop
- Brake warning light concerns related to master cylinder failure
- Reduced braking performance from worn hydraulic seals
Installation Notes and Tips
- Verify bore size, outlet thread sizes, and port orientation before installation.
- Bench bleed the master cylinder before connecting brake lines.
- Inspect brake lines, fittings, and fluid condition during replacement.
- Mounting hardware, push rod, and booster are not included.
- Confirm vehicle-specific brake system requirements for Chevrolet, GMC, or Cadillac fitment before ordering.
Quality Assurance
Centric Premium Brake Master Cylinders are produced to align with original equipment quality, configuration, and fitment standards. The Centric brake hydraulics program is built around replacement parts that follow OE-style specifications for dependable service in supported brake system applications.
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