1961-87 GM 4speed transmission to bell housing bolts 4pc These are the factory correct black phosphate bolts that are used to hold the transmission to the bell housing. These were used on all GM manual transmissions. They have the correct head marking. This is exact reproduction of the original. This a brand new inline tube factory correct reproduction. is the correct size, shape, Length made from the correct grade steel plated the correct Phosphate Black Color. Replacement for: 1964-72 , , , , Elcamino 1970-72 , 1969-72 1967-69 , , 66-74 1970-78 / Trans / 1973-79 A-body , , , 1961-79 Trucks all Full Size Cars from 61-74 Any GM Car