Available here is one new V-Belt to fit your alternator, fan, and crank shaft pulley.
Fits Buick vehicles listed in the compatibility below:
Centurion
1971 8 Cylinders 7.5L 4BL OHV (1445601)
1972 8 Cylinders T 7.5L 4BL OHV (1423801)
1973 8 Cylinders U 7.5L 4BL OHV (1402304)
Century
1974 8 Cylinders R 7.5L Carburetor OHV (1382203)
1977 8 Cylinders K 6.6L 4BL OHV (1319207)
8 Cylinders R 5.7L 4BL OHV (1319206)
Electra
1970 8 Cylinders 7.5L 4BL OHV (1466401)
1971 8 Cylinders 7.5L 4BL OHV (1445701)
1972 8 Cylinders T 7.5L 4BL OHV (1424001)
1973 8 Cylinders T 7.5L 4BL OHV (1402501)
1974 8 Cylinders T 7.5L 4BL OHV (1382301)
1975 8 Cylinders T 7.5L 4BL OHV (1361201)
1976 8 Cylinders T 7.5L 4BL OHV (1340103)
1978 8 Cylinders K 6.6L 4BL OHV (1298603)
8 Cylinders R 5.7L 4BL OHV (1298601)
1979 8 Cylinders K 6.6L 4BL OHV (1277103)
8 Cylinders R 5.7L 4BL OHV (1277101)
1981 8 Cylinders Y 5.0L 4BL OHV (1235502)
1982 8 Cylinders Y 5.0L 4BL OHV (1213902)
1983 8 Cylinders Y 5.0L 4BL OHV (1191202)
1984 8 Cylinders Y 5.0L 4BL OHV (1167502)
Electra Estate Wagon
1981 8 Cylinders Y 5.0L 4BL OHV (1688501)
1982 8 Cylinders Y 5.0L 4BL OHV (1683401)
1983 8 Cylinders Y 5.0L 4BL OHV (1678501)
1984 8 Cylinders Y 5.0L 4BL OHV (1167601)
1985 8 Cylinders Y 5.0L 4BL OHV (1668601)
Electra Park Avenue
1978 8 Cylinders K 6.6L 4BL OHV (1298803)
8 Cylinders R 5.7L 4BL OHV (1298801)
1979 8 Cylinders K 6.6L 4BL OHV (1277303)
8 Cylinders R 5.7L 4BL OHV (1277301)
1981 8 Cylinders Y 5.0L 4BL OHV (1235702)
1982 8 Cylinders Y 5.0L 4BL OHV (1214102)
1983 8 Cylinders Y 5.0L 4BL OHV (1191402)
1984 8 Cylinders Y 5.0L 4BL OHV (1167802)
Estate Wagon
1970 8 Cylinders 7.5L 4BL OHV (2517801)
1971 8 Cylinders 7.5L 4BL OHV (1727401)
1972 8 Cylinders T 7.5L 4BL OHV (1723301)
1973 8 Cylinders T 7.5L 4BL OHV (1719201)
1974 8 Cylinders T 7.5L 4BL OHV (1714901)
1975 8 Cylinders T 7.5L 4BL OHV (1711101)
1976 8 Cylinders T 7.5L 4BL OHV (1706402)
1978 8 Cylinders K 6.6L 4BL OHV (1699103)
8 Cylinders R 5.7L 4BL OHV (1699101)
1979 8 Cylinders K 6.6L 4BL OHV (1695603)
8 Cylinders R 5.7L 4BL OHV (1695601)
LeSabre
1970 8 Cylinders 7.5L 4BL OHV (1466603)
1971 8 Cylinders 7.5L 4BL OHV (1445803)
1972 8 Cylinders T 7.5L 4BL OHV (1424201)
1973 8 Cylinders U 7.5L 4BL OHV (1402604)
1974 8 Cylinders P 7.5L 2BL OHV (1382404)
1975 8 Cylinders T 7.5L 4BL OHV (1361302)
1976 8 Cylinders T 7.5L 4BL OHV (1340204)
1978 8 Cylinders K 6.6L 4BL OHV (1298707)
8 Cylinders R 5.7L 4BL OHV (1298705)
1979 8 Cylinders R 5.7L 4BL OHV (1277204)
1981 8 Cylinders Y 5.0L 4BL OHV (1235603)
1983 8 Cylinders Y 5.0L 4BL OHV (1191303)
1984 8 Cylinders Y 5.0L 4BL OHV (1167703)
1985 8 Cylinders Y 5.0L 4BL OHV (1143003)
LeSabre Estate Wagon
1981 8 Cylinders Y 5.0L 4BL OHV (1688601)
1982 8 Cylinders Y 5.0L 4BL OHV (1683501)
1983 8 Cylinders Y 5.0L 4BL OHV (1678601)
1985 8 Cylinders Y 5.0L 4BL OHV (1668701)
Regal
1977 8 Cylinders R 5.7L 4BL OHV (1319606)
Riviera
1970 8 Cylinders 7.5L 4BL OHV (1466701)
1971 8 Cylinders 7.5L 4BL OHV (1445901)
1972 8 Cylinders U 7.5L 4BL OHV (1424301)
1973 8 Cylinders U 7.5L 4BL OHV (1402801)
1974 8 Cylinders T 7.5L 4BL OHV (1382603)
1975 8 Cylinders T 7.5L 4BL OHV (1361501)
1976 8 Cylinders T 7.5L 4BL OHV (1340402)
1978 8 Cylinders K 6.6L 4BL OHV (1299003)
8 Cylinders R 5.7L 4BL OHV (1299001)
Skylark
1971 8 Cylinders 7.5L 4BL OHV (1446004)
1977 8 Cylinders R 5.7L 4BL OHV (1319905)
Wildcat
1970 8 Cylinders 7.5L 4BL OHV (1466901)