I don't see a chrome trim piece like yours on the parts diagram -
TOYOTA HILUX SURFRZN185W-GAPXK - BODY - FRONT BUMPER BUMPER STAY | Japan Parts EU
It's also odd, the photo you posted shows an '01-02 grille, maybe your truck was made in '00 but is an '01 model? Regardless, I don't see that trim piece in the '01 parts list either
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1997 4Runner Limited 4WD E-Locker ~200k | Falken Wildpeak A/T3W 265/75/16 | Pro Comp 69 16x8 | OME 2906 | B&M 70264
Addicted Offroad Front Bumper | Spiker Engineering High-Lift Hood Struts and Ultragauge Mount