Exhaust manifold bolt with acorn head for Cadillac V-16.
Cadillac part number 881219, Group number 8.4433.
Two required per car.
Material: 4140 Steel, heat treat grade 8
Finish: Natural
Thread: 3/8-16
Thread length: .875
OAL: 3.515
Hex: .562
Length under head: 2.750
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