Specifications: Double Groove Color: Black Pulley Style: V-Belt Pump Style: Saginaw Pulley Attachment: Keyway Outside Diameter: 5 3/4" Keyway Bore: 5/8" Features excellent quality steel Fits for: Fits For 1966 to 1976 GM Saginaw Style Pulley. Fits For All Early - 1984 Pumps With Key Way & 5/8" Shaft. Equivalent To Original Pulley Found On: The 1970-74 Camaro/Firebird; 1970-74 Nova; 1970-74 Chevelle/Malibu; 1970-74 Monte Carlo; Also Can Be Used With 1982-88 T-Bird Rack & Pinion Kits. Package Includes: .