PART NUMBER: 61-3171
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Fits 1990-2005 Miata engines - both 1.6L and 1.8L
ARP Cylinder Head Studs, Pro Series, 12-Point Head. 8740 chromoly with black oxide coating. Full kit with 10 studs. Torque spec is 70 ft-lbs.
Engine assembly should be done by a professional.