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Mazda Rotary Engine 12A 13B Flywheel Bolt Set These flywheel bolts are ARP pro series bolts, made from a 8740 chrome moly steel. Each set is heat treated to 200,000 psi, thread Rolled after heat-treating. Much stronger than OEM flywheel bolts. ARP's design eliminates the threads near the head of the bolts, where the bolt goes through the flywheel, to make the bolt less prone to failure at that point. Set includes 6 ARP pro series bolts. Counterbalance shown in picture is for illustrative purposes only, it is NOT included.
Application : Mazda 1.1L 12B and 1.3L 13B engines.