[Vehicle Fitment]: Compatible with Ford B-600 1983 (17,500 Lb. Axle), B-600 1984-1994, C600 1980-1983 (15,000 Lb. Rear Axle), F-500 1975-1977, F-600 1980-1994, F-700/F-7000 1970 (15,000 Lb. Rear Axle, K-H), LN600 1980-1983 (15,000 Lb. Rear Axle), M-400 1973, M-450 1974 --- Front Left Lower or Rear Upper or Lower [Reference Number]: W37149, C8TZ2261B, D1TZ2261A --- Please enter your vehicle information in the top left corner of the listing and check our Special Notes before ordering [Specifications]: ①Bleeder Screw Cap Included: No, ②Bleeder Screw Included: No, ③Brake Component Inlet Thread Size: 3/8-24 inch, ④Inside Diameter: 1.5 inch, ⑤Material: Cast Iron, ⑥Thread Diameter: 3/8. [Strict Tests]: Pressure test from 0.2MPa to 20MPa and high temperature test at 120℃ to ensure safe and reliable braking. [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted Brake Wheel Cylinder. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind. ASIN B0D95NK2RQ Brand A-Premium Item Weight 2.9 pounds Manufacturer PremiumpartsWhosale OEM Part Number W37149, C8TZ2261B, D1TZ2261A Package Dimensions 5.31 x 3.35 x 2.76 inches Manufacturer Part Number APBWC134