GM Throwout Bearing,Clutch Fork & Boot,Pivot Ball for 621 SBC BBC GM 11" Manual Clutch Appllications Bellhousing Hardware [Clutch Release Bearing,Pivot Ball,Clutch Fork & Boot] 1959-1988 3899621

Product description Casting #3899621 168 TOOTH CHEVY **Compatibility:** 1964-1988 Chevy Chevelle, Malibu, Monte Carlo1959-1987 Chevy El Camino1959-1988 Chevy Impala, Caprice, Bel Air, Biscayne, Brookwood, Kingswood, Nomad, Sedan Delivery1963-1981 Chevy Corvette1967-1981 Chevy Camaro1968-1974 Chevy II, Nova NOTE: With Manual Transmissions & 168 tooth Flywheel.

Will not work on 1962-1967 Chevy II & Chevy Nova models as the size of the transmission tunnel is too narrow.

Will not work on Monza or Vega as they both used a cable operated 10.5" clutch with the pivot on the other side.The clutch fork was also angled about 45 degrees not straight across.Fits ALL Small Block & Big Block Chevy engines regardless of factory clutch size.