This is a new brake master cylinder for 1951-1955 (1st Series) Chevrolet & GMC trucks. The bore size is 1-1/8" diameter. Check against your original. Replaces GM# 5454384 with Casting Number 5453838
1951 1/2 ton truck
1953-1955 (1st Series) Double-Duty
1954-1955 (1st Series) with Hydramatic Transmission
This part fits most 1951 1952 1953 1954 1955 Chevrolet Trucks; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.
This product can expose you to a chemical, which is known to the State of California to cause cancer or reproductive harm.
For more information go to www.P65Warnings.ca.gov