OE Quality
60-Day Returns

Centric 130.63031 Brake Master Cylinder
Overview of Centric Premium Brake Master Cylinder 130.63031
The Centric Premium Brake Master Cylinder 130.63031 is engineered for reliable brake hydraulics performance in Jeep vehicles. Designed specifically for Jeep Cherokee, Comanche, Wagoneer, and Wrangler models, this master cylinder ensures consistent braking response and durability.
- Constructed from durable cast iron for both reservoir and master cylinder
- Includes integral single reservoir and master cylinder cap
- Features a straight bore design with a 0.938 inch (23.813 mm) bore diameter
- Equipped with two mounting holes for secure installation
- Includes push rod and reservoir but excludes mounting hardware and brake booster
- Primary and secondary outlet thread sizes: 7/16"-24 and 1/2"-20 inverted flare
- Compatible with Jeep Cherokee, Comanche, Wagoneer, and Wrangler
Centric Premium Brake Master Cylinders Product Line
The Centric Premium Brake Master Cylinders line focuses on delivering high-quality brake hydraulics components with precise fitment and reliable materials. This product line emphasizes cast iron construction and integral reservoir designs to meet OEM specifications, providing dependable brake system performance for various Jeep models, including the 130.63031 master cylinder.
Detailed Product Description
This Centric Premium Brake Master Cylinder 130.63031 features a cast iron master cylinder and reservoir, ensuring strength and resistance to wear. The single integral reservoir design simplifies fluid management and reduces potential leak points. The straight bore with a diameter of 0.938 inches (23.813 mm) supports consistent hydraulic pressure for effective braking. The master cylinder includes a cap and push rod, but mounting hardware and brake booster are not included, allowing compatibility with existing brake system components. The two mounting holes provide secure attachment, while the primary and secondary outlet ports use inverted flare threads sized 7/16"-24 and 1/2"-20 respectively, matching OEM specifications for Jeep Cherokee, Comanche, Wagoneer, and Wrangler models.
Common Applications and Issues Addressed
- Replacement for worn or leaking brake master cylinders in Jeep Cherokee, Comanche, Wagoneer, and Wrangler
- Restores proper hydraulic pressure for improved brake pedal feel and response
- Eliminates brake fluid leaks caused by damaged reservoirs or seals
- Addresses inconsistent braking due to bore wear or internal component failure
- Supports brake system maintenance and rebuilds requiring OEM-spec master cylinders
Installation Notes and Tips
- Verify compatibility with your specific Jeep model and year before installation
- Ensure brake system is properly bled after installation to remove air from hydraulic lines
- Use appropriate brake fluid as specified by the vehicle manufacturer
- Inspect mounting points and hardware for wear or damage prior to installation
- Check thread sizes and flare types on brake lines to confirm fit with master cylinder outlets
Quality Assurance and Warranty
Centric Premium Brake Master Cylinders are manufactured to meet or exceed OEM standards, using cast iron materials for durability and performance. The 130.63031 part undergoes quality control inspections to ensure proper fit and function. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region or distributor.
| Brand | Centric |
|---|---|
| Part Number | 130.63031 |
| Position | Centric Premium Brake Master Cylinders |
| Bleeder Hoses Included | No |
| Bore Size | 0.938 |
| Bore Size | 23.813 |
| Bore Type | Straight |
| Boss, Nipple or Port: Front, Right: #A [cntrc] | 1/2"-20 inv |
| Boss, Nipple or Port: Rear, Right: #A [cntrc] | 7/16"-24 inv |
| Brake Booster Included | No |
| Cylinder Bore Dia in | 0.9375 |
| Cylinder Bore Dia mm | 23.81 |
| Master Cylinder Bore Diameter | 0.938 |
| Master Cylinder Bore Diameter | 23.813 |
| Master Cylinder Cap Included | Yes |
| Master Cylinder Material | Cast Iron |
| Mounting Bracket Included | No |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 2 |
| Port Quantity | 2 |
| Primary Bore Diameter | 0.938 |
| Primary Bore Diameter | 23.813 |
| Primary Outlet Flare Type | Inverted |
| Primary Outlet Flare Type [cntrc] | Inverted |
| Primary Outlet Thread Diameter | 0.4375 |
| Primary Outlet Thread Size | 7/16"-24 |
| Primary Outlet Threads Per Inch | 24 |
| Publication Bore [cntrc] | 15/16" |
| Push Rod Included | Yes |
| Push Rod: Length / Depth [cntrc] in | 0 |
| Reservoir Included | Yes |
| Reservoir Material | Cast Iron |
| Reservoir Style | Integral |
| Reservoir Type | Single |
| Secondary Outlet Flare Type | Inverted |
| Secondary Outlet Flare Type [cntrc] | Inverted |
| Secondary Outlet Thread Diameter | 0.500 |
| Secondary Outlet Thread Size | 1/2"-20 |
| Secondary Outlet Threads Per Inch | 20 |
| Weight [cntrc] kgs | 3.77 |
| Weight [cntrc] lbs | 8.3 |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1989 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1989 | Jeep | Comanche | N/A | Centric Premium Brake Master Cylinders |
| 1989 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
| 1989 | Jeep | Wrangler | N/A | Centric Premium Brake Master Cylinders |
| 1988 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1988 | Jeep | Comanche | N/A | Centric Premium Brake Master Cylinders |
| 1988 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
| 1988 | Jeep | Wrangler | N/A | Centric Premium Brake Master Cylinders |
| 1987 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1987 | Jeep | Comanche | N/A | Centric Premium Brake Master Cylinders |
| 1987 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
| 1987 | Jeep | Wrangler | N/A | Centric Premium Brake Master Cylinders |
| 1986 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1986 | Jeep | Comanche | N/A | Centric Premium Brake Master Cylinders |
| 1986 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
| 1985 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1985 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
| 1984 | Jeep | Cherokee | N/A | Centric Premium Brake Master Cylinders |
| 1984 | Jeep | Wagoneer | N/A | Centric Premium Brake Master Cylinders |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.