New, old stock, unused and in original packaging. Dorman W37423 Rear Drum Brake Wheel Cylinder Brand: Dorman Part Number: W37423 Item Condition: New Item Description: Drum Brake Wheel Cylinder Manufacturer Brand Description: Drum Brake Wheel Cylinder Quantity Needed: 2; Fitment Notes: Bore: 3/4"; Position: Rear Item Specifics: UPC: 082702410592 Application Summary - 2000: Buick Riviera 1985-79, Chevrolet LLV 1993-87, Oldsmobile Toronado 1985-79 Key Search Words - 2000: Drum, Brake, Wheel, Cylinder, Brakes, Wheels, Cylinders Marketing Description - 2000: Direct replacement Wheel Cylinders are designed to fit specific vehicle applications and to ensure a proper fit every time. Normal wear may cause piston seals to leak. Corrosion and pitting can also occur inside Wheel Cylinders as moisture builds up in the brake fluid. A leaky Wheel Cylinder can be dangerous to the driver, causing gradual softening of the brake pedal and creating brake pull to one side. Bleeder Screw Cap Included: No Bleeder Screw Included: Yes Bore Size: 0.75 In. Brake Component Inlet Thread Size: M10 X 1.0 Country of Origin (Primary): CN Emission Code : 1 Harmonized Tariff Code (Schedule B): 8708300050 Interchange Part Number: 18003905, WC98905, WC37423, WC13799, W37423, 33799 Life Cycle Status Code: 2 Life Cycle Status Description: Available to Order Material: Cast Iron National Popularity Code : B Other Part Number: N2020-397389-DOR, 18E160, 37423, W-82047, W906464 Product Description - Long - 80: Drum Brake Wheel Cylinder Product Description - Short - 20: WHEEL CYLINDER Refurbished Part: N Remanufactured Part: N This part generally fits Buick, Chevrolet, Oldsmobile vehicles and includes models such as LLV, Riviera, Toronado with the trims of Base Convertible 2-Door, Base Coupe 2-Door, Base Mini Cargo Van 2-Door, Brougham Coupe 2-Door, Caliente Coupe 2-Door, Limited Edition Convertible 2-Door, Luxury Coupe 2-Door, S Coupe 2-Door, T-Type Coupe 2-Door, XSC Coupe 2-Door, XSR Coupe 2-Door, XX Anniversary Edition Coupe 2-Door . The engine types may include 2.5L 2474CC 151Cu. In. l4 GAS OHV Naturally Aspirated, 3.8L 3800CC 231Cu. In. V6 GAS OHV Turbocharged, 4.1L 252Cu. In. V6 GAS OHV Naturally Aspirated, 5.0L 307Cu. In. V8 GAS OHV Naturally Aspirated, 5.7L 350Cu. In. V8 DIESEL OHV Naturally Aspirated, 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated. This part fits vehicles made in the following years 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1987, 1988, 1989, 1990, 1991, 1992, 1993.