The Fluidampr Harmonic Balancer crank pulley replaces the factory JZ crank pulley dampener that is prone to separation and failure. This dampener helps reduce unwanted harmonic vibrations through the use of high viscosity silicone fluid that surrounds a nylon-coated inertia ring inside a laser-welded housing. It is finished/coated with black zinc chromate to increase its corrosion resistance. Timing marks are every two degrees from 50° BTDC to 10° ATDC with additional marks at 90, 180 and 270. This dampener meets SFI 18.1 specs and fits all variants of 2jz and 1jz engines.