The Master Cylinder is both the heart and brain of your brake system, converting foot pedal pressure into 4 wheel stopping power. Acting as the brake fluid reservoir, the master cylinder also traps muck and moisture, which can lead to unexpected failure or a "sinking pedal.
| PART # | PLYMOUTH | DODGE | DESOTO | CHRYSLER | IMPERIAL | TRUCKS |
| G-150 | 1931-36 | 1930-36 | 1930-36 | 1930-36 | ||
| G-151 | 1937-41 | 1937-40 | 1937-40 | 1937-40 | ||
| G-152 | 1942-54 | 1941-54 (1) | 1941-54 (1) | 1941-54 (1) | 1951-54 (1) | |
| G-153 | 1955 (2) | 1955 (2) | 1955 (2) | 1955 (2) | ||
| G-154 | 1955-58 (2) | 1956-58 (2) | 1956-58 (2) | 1956-58 (2) | 1956-58 (2) | |
| 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | ||
| G-155 | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | |
| G-156 | 1930-56 |
(1)- On 1950-54 Dodge, DeSoto, Chrysler- Specify if power brake or not.
(2)- No power brakes. (3)- With power brakes.
| PART # | PLYMOUTH | DODGE | DESOTO | CHRYSLER | IMPERIAL | TRUCKS |
| G-140 | 1930-36 | 1930-36 | 1930-36 | 1930-36 | ||
| G-141 | 1937-41 | 1937-40 | 1937-40 | 1937-40 | ||
| G-142 | 1942-54 | 1941-54 (1) | 1941-54 (1) | 1941-54 (1) | 1951-54 (1) | |
| G-143 | 1955 (2) | 1955 (2) | 1955 (2) | 1955 (2) | ||
| G-144 | 1955-58 (2) | 1956-58 (2) | 1956-58 (2) | 1956-58 (2) | 1956-58 (2) | |
| 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | 1956-61 (3) | ||
| G-145 | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | 1959-61 (2) | |
| G-146 | 1930-56 |
(1)- On 1950-54 Dodge, DeSoto, Chrysler- Specify if power brake or not.
(2)- No power brakes. (3)- With power brakes.
| PART # | PLYMOUTH | DODGE | DESOTO | CHRYSLER | IMPERIAL | TRUCKS |
| G-170 | 1928-37 | 1928-37 | 1928-37 | 1928-37 | ||
| G-171 | 1938-42 | 1938-42 | 1938-42 | 1938-42 | ||
| G-172 | 1946-48 | 1946-48 | 1946-48 | 1946-48 | ||
| G-173 | 1949-52 | 1949-52 | 1949-52 | 1949-52 | 1951-52 | |
| G-174 | 1953-54 | 1953-54 | 1953-54 | 1953-54 | 1953-54 | |
| G-175 | 1955-62 | 1955-62 | 1955-62 | 1955-62 | 1955-62 | |
| G-176 | 1934-53 | |||||
| G-177 | 1954-56 |