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Raybestos MC9221 Brake Master Cylinder
| Brand | Raybestos MC9221 |
|---|---|
| Mounting Hole Quantity | 4 |
| Master Cylinder Material | Iron |
| Mounting Hole Diameter | 0.448 |
| Bore Size | 1.250 |
| Number of Ports | 2 |
| Primary Port Thread A | 1/2"-20 |
| Fits | —17 vehicles |
OE direct replacement. Brake master cylinder engineered for straightforward installation.
Iron construction. Provides durable, dependable hydraulic performance.
Dual-port design. Supports clean brake fluid routing through the system.
Cross-references Anchor 9221, Raybestos Brakes MC9221 and 10-14484 for the same application. See all 13.
Raybestos MC9221 Brake Master Cylinder
The Raybestos Element3 MC9221 brake master cylinder is built for hydraulic brake system service where consistent pedal response and proper fluid pressure are required. With a 1.250-inch bore, iron construction, and a 4-hole mounting pattern, this master cylinder is specified for direct brake hydraulic replacement applications.
Key Features
- Raybestos Element3 new brake master cylinder
- Part number MC9221
- 1.250-inch bore size for hydraulic brake pressure delivery
- Iron master cylinder body for durable service
- 4 mounting holes with 0.448-inch mounting hole diameter
- 2 ports with 1/2"-20 primary port thread A
- Brake hydraulics replacement part for service and repair work
Product Details
Raybestos MC9221 is a brake master cylinder in the Element3 product line, a Raybestos brake component family focused on hydraulic brake service parts. This unit uses an iron housing and a 1.250-inch bore, along with two fluid ports and a 1/2"-20 primary port thread A. Those specifications matter when matching the master cylinder to the vehicle’s brake hydraulic layout and port configuration. For shoppers searching for a brake master cylinder for Chevrolet, GMC, or Cadillac applications, MC9221 provides the core dimensions needed for a proper replacement selection.
This part cross-references Anchor 9221 for the same application.
What It Helps Address
- Low or inconsistent brake pedal feel caused by master cylinder wear
- Internal hydraulic leakage that reduces braking performance
- Brake fluid pressure loss in the master cylinder circuit
- Replacement needs during brake hydraulic system repair
- Fitment matching for vehicles requiring a 1.250-inch bore master cylinder
Installation Notes and Tips
Verify the bore size, port count, port thread, and mounting-hole layout against the original unit before installation. Brake hydraulic components should be installed with clean fluid passages and properly bled after service to remove air from the system. Confirm the vehicle’s brake line routing and master cylinder mounting pattern match the MC9221 specifications before final assembly.
Quality Assurance
Raybestos Element3 brake hydraulics are built to meet the dimensional and functional requirements expected in replacement brake service. Use the listed specifications to confirm application match before purchase.
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1954 | GMC | 300 | — | with Booster Brakes; Element3; New |
| 1954 | GMC | 300-24 | — | with Booster Brakes; Element3; New |
| 1954 | GMC | M300 | — | with Booster Brakes; Element3; New |
| 1954 | GMC | S300-24 | — | with Booster Brakes; Element3; New |
| 1952 | Chevrolet | Truck | 3800 | Conventional Cab; Element3; New |
| 1952 | Chevrolet | Truck | 3600 | Element3; New |
| 1951 | Chevrolet | Truck | 3800 | Conventional Cab; Element3; New |
| 1950 | Chevrolet | Truck | 3800 | Conventional Cab; Element3; New |
| 1950 | GMC | FC280 | — | with Booster Brakes; Element3; New |
| 1950 | GMC | FC281 | — | with Booster Brakes; Element3; New |
| 1949 | Chevrolet | Truck | 3800 | Conventional Cab; Element3; New |
| 1947 | GMC | EC280 | — | with Booster Brakes; Element3; New |
| 1947 | GMC | EC282 | — | with Booster Brakes; Element3; New |
| 1947 | GMC | EC283 | — | with Booster Brakes; Element3; New |
| 1947 | GMC | FC280 | — | with Booster Brakes; Element3; New |
| 1947 | GMC | FC281 | — | with Booster Brakes; Element3; New |
| 1947 | GMC | FC283 | — | with Booster Brakes; Element3; New |
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