Harmonic Balancer Bolt fits Nissan RB26 6cyl, M18 x 1.50, 27mm Socket

As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure thatthe balancer is locked in position, ARP has developed these ultra strong 200,000 psibolts that let you exert maximum clamping force. Special features include 1/4˝thick, wide area washer and anextra tall 12-point head that accepts a deep socket and eliminates the worry of stripping the head.