Timing Belt Change?

[Ry_Tower]

Just to give you an update guys, I had already canvassed for the following parts :

timing belt
tensioner
waterpump
camshaft seal
crankshaft seal

These are the parts that are usually replaced whenever you want to have your timing belt replaced? I'm not quite sure though.. hope you guys can enlighten me on this.

And also, I know that the timing belt and the tensioner should be OEM, but how about the others? Can I use replacement parts?

And for the replacement parts, are these surplus or secondhand ones?

TIA for all the help fellow tsikoteers!

They are not that expensive naman IMO so might as well buy OEM. Yung waterpump lang pupuwede na GMb IMO. It is reliable as per my experience.