Rebuilding a classic Chevy, GMC, or Pontiac? This power steering pump is a direct replacement for the Saginaw-style pumps used from 1966 to 1976. It comes with a single groove pulley (5/8\ keyed shaft) and matches OEM numbers like JM2000B, 26028613, and others. Fits a ton of models with 4.1L, 5.0L, and 5.7L engines—think Chevy Blazer, Camaro, Impala, Malibu, GMC Suburban, Pontiac Firebird, and more. Always double-check your engine and bracket setup, as some applications might need the right mounting bracket. Restores smooth steering and eliminates leaks from an old, worn pump. A must-have for restorations, daily drivers, or hot rod projects. Quality construction for reliable performance. Get your classic steering like new again.