Professional Products Harmonic Damper Spacers
From Professional Products(PPRO)
Quality aluminum space with a natural finish ,sold as each for the Crankshaft using the 4-bolt pattern , that can be re-drilled for 3 BOLT , no mounting hardware is included.SEE size listing for best needs for application.
3-3/8" would work with # 81006
3-7/8" would work with Part # 81008
4" would work with # 81007