New Harmonic Balancer OEM or aftermarket?

[Thomas_Magnum_'98]

Hello all. So it seems the outside ridged part of my harmonic balancer has separated from the rest of the pulley. I need a new one. So, I was just wondering whether this is a part to strictly go OEM on or just save some and stick an aftermarket on there. Also, any thoughts on this site and pulley? This is for a 2.7L 4 cylinder.

Toyota Tacoma Harmonic Balancer / Crankshaft Pulley 4 Cylinder Polea Del Ciguenal ,