Johnny, I found an old AC Delco catalogue, 15A-100 dated 1993, it doesn't specifically give a # for a 72 Caprice, but here is what's in print Page 99 76-74 Bel Air, Caprice, Impala 15-6110 73 All Exc Camaro,Corvette,Nova,Vega 15-694 72-70 Chevelle,Malibu,Monte... Login to read more.