You are looking at a remanufactured GM9 Torque Converter pt#: B9. Left over inventory from the attic of an old auto part store. Will fit all 1976-81 Chevy with the following automatic transmissions:

TH200/M161976 - 1977
THM200/M291976 - 1981
THM200C/MV91976 - 1979

models.

1976 - 1977Buick SkylarkRWD
1978 - 1978Buick RegalRWD
1977 - 1977Buick LeSabreRWD
1978 - 1978Buick CenturyRWD
1980 - 1981Cadillac FleetwoodRWD
1980 - 1981Cadillac DeVilleRWD
1976 - 1978Chevrolet MonzaRWD
1978 - 1978Chevrolet Monte CarloRWD
1978 - 1979Chevrolet MalibuRWD
1976 - 1977Chevrolet ImpalaRWD
1978 - 1979Chevrolet El CaminoRWD
1977 - 1977Chevrolet CapriceRWD
1978 - 1978GMC CaballeroRWD
1977 - 1978Oldsmobile StarfireRWD
1976 - 1977Oldsmobile OmegaRWD
1977 - 1977Oldsmobile Delta 88RWD
1978 - 1978Oldsmobile Cutlass SupremeRWD
1978 - 1978Oldsmobile Cutlass SalonRWD
1978 - 1978Oldsmobile Cutlass CalaisRWD
1978 - 1978Oldsmobile CutlassRWD
1976 - 1977Pontiac VenturaRWD
1976 - 1978Pontiac SunbirdRWD
1977 - 1978Pontiac PhoenixRWD
1978 - 1978Pontiac LeMansRWD
1978 - 1978Pontiac Grand PrixRWD
1978 - 1978Pontiac Grand LeMansRWD
1978 - 1978Pontiac Grand AmRWD
1978 - 1978Pontiac CatalinaRWD
1978 - 1978Pontiac BonnevilleRWD

Stock stall speed. 13” diameter, 11” bolt circle, without gear, without shroud, 3 strap type mounting pads, 27 spline. I guarantee this to be a good converter.