Alternator questions - 2013 tow package

I just picked up my 2013 SR5 tow package Tacoma from the shop.
They replaced the alternator - installed part 27060-0P020-84 - is that the right alternator?
I noticed the idle is low - 500-400 when before it was always around 750.

 

Seems like the right one should be a 130 amp
https://toyotaparts.mcgeorgetoyota.com/oem-parts/toyota-alternator-270600p02084

 

You could also go through the throttle relearning procedure. It does not hurt

 

Are you saying I have the correct one?

 

You could type your Vin number in Toyota parts.com but according to that website, if you scroll down, it fits a 2013 4 L gas engine

 

Yes. That is the right alternator

Are you in gear or in park with the idle at 500 rpm. If in gear, that about normal.

 

All tacos with the towing package will have the higher amperage alternator,

 

thank you - so correct alternator - low idle is in gear.
I will research the throttle relearn

 

Here is my idle speeds
4.0 with towing package and 130A alternator.

https://www.tacomaworld.com/threads...tion-with-foot-on-brake.787340/#post-28175872

 

Clean the throttle body.

 

Follow up:

Driving the truck the next day or so got running great and idle back to normal - thank you all for input.