Cylinder head stud for use on 1917 – 1925 Cadillac V8.
Cadillac part number 87865, group number 8.1875.
36 Required per car on Type 59 and 61.
40 Required per car on Type 57 and 63.
Type 57: 1917-1919
Type 59: 1920-1921
Type 61: 1921-1923
Type 63: 1925-1925
Material: 4140 Steel, heat treat grade 8
Finish: Natural
Thread: 7/16-14, 7/16-20
Thread length: 7/16-14 .744; 7/16-20 .656
Mid section: 1.250
OAL: 2.650
