A new Moog K-75 REGULAR (NOT Ball Bearing) Idler Arm Kit that I got at an auction of vintage car parts.
This is equivalent to GM part nos. 516710 and 516627 and is for use on:
BUICK (1954-56: all)
CADILLAC (1941-60: all; 1940: 60S, 62, and 72; 1939: 61)
LASALLE (1939-40: all)
OLDSMOBILE (1939-60: all)
PACKARD (1951-56: all but ONLY IF Moog #516 Idler Support Arm or equivalent is already installed; 1946-50: all without Power Steering; 1942: 2000, 2001, 2003, 2006, 2010, and 2011; 1941: Clipper)