For sale, pair of NOS GM Delco window motors. 5045587 (R) 5045588 (L) Left is stamped D 257-70 Right is stamped D 194-70 $250.00 for the pair, shipped to US 48. Add 3% for paypal. I dont have anything to judge price, couldnt find any new ones for sale. My thought is $125.00 each sounds fair.o No: Google search came up with applications below. GM numbers were 4905387 (R) and 4905388 (L) and fit these models: 1960-'68 Buick, Chevy, Olds, Pontiac full-size cars 1961-'68 Buick Special, S/W, Skylark; Pontiac Le Mans, Tempest 1966-'68 Riviera 1959-'68 Cadillac DeVille, Fleetwood 1956-'67 Corvette 1967-'68 Eldorado, Camaro, Firebird 1964-'68 Chevelle, Malibu, El Camino, Cutlass, F-85 1962-'68 Grand Prix Heres some pics. Click on pic to enlarge. The brown stuff you see in the pic is the factory grease. PM me with interest. Thank you.