These brackets are designed for square bolt pattern aftermarket master cylinder/booster combinations to mount the booster to the firewall on 1955-58 General Motors passenger car models. Will fit most aftermarket 7", 8", 9", or 11" boosters with the standard 3-3/8" square bolt pattern.
Note: For use with master cylinder/booster combination J85315171, J85315672 and others with the standard 3-3/8" square bolt pattern.
Applications:| Make | Model | Years |
| Buick | Century | 1955 - 1958 |
| Buick | Limited | 1958 |
| Buick | Roadmaster | 1955 - 1958 |
| Buick | Special | 1955 - 1958 |
| Buick | Super | 1955 - 1958 |
| Cadillac | Commercial Chassis | 1955 - 1958 |
| Cadillac | DeVille | 1955 - 1958 |
| Cadillac | Eldorado | 1955 - 1958 |
| Cadillac | Series 60 Fleetwood | 1955 - 1958 |
| Cadillac | Series 62 | 1955 - 1958 |
| Cadillac | Series 70 Fleetwood Eldorado | 1958 |
| Cadillac | Series 75 Fleetwood | 1955 - 1958 |
| Chevrolet | Bel Air | 1955 - 1958 |
| Chevrolet | Biscayne | 1958 |
| Chevrolet | Brookwood | 1958 |
| Chevrolet | Del Ray | 1957 - 1958 |
| Chevrolet | Nomad | 1955 - 1958 |
| Chevrolet | One-Fifty Series | 1956 - 1957 |
| Chevrolet | Sedan Delivery | 1955 - 1958 |
| Chevrolet | Two-Ten Series | 1955 - 1957 |
| Chevrolet | Yeoman | 1958 |
| Ford | Mustang | 1964 - 1966 |
| Oldsmobile | 88 | 1955 - 1957 |
| Oldsmobile | 98 | 1955 - 1958 |
| Oldsmobile | Deluxe 88 | 1955 - 1956 |
| Oldsmobile | Fiesta | 1957 - 1958 |
| Oldsmobile | Golden Rocket 88 | 1957 |
| Oldsmobile | Starfire | 1955 - 1957 |
| Oldsmobile | Super 88 | 1955 - 1958 |
| Pontiac | Bonneville | 1957 - 1958 |
| Pontiac | Catalina | 1955 - 1958 |
| Pontiac | Chieftain | 1955 - 1958 |
| Pontiac | Laurentian | 1955 - 1958 |
| Pontiac | Pathfinder | 1955 - 1958 |
| Pontiac | Star Chief | 1955 - 1958 |
| Pontiac | Strato-Chief | 1958 |
| Pontiac | Super Chief | 1957 - 1958 |
| Height | 9 in |
| Length | 2 in |
| Weight | 1 lbs |
| Width | 9 in |
