Rep Power: 116

I’ve noticed some, not sure what to call them, “sub-names” listed on various OEM parts on a receipt from Majestic Auto.
Some examples:
Arai
Nok
Koyo
Are these the names of companies that are contracted by Honda to make the part?

Also there is another number listed after a part number on some parts.
For example the Timing Belt part number is 1440-PMM-A02.
After it in parentheses is: 104RU22 Gb-333.
What is this? Is it an alternate part number of some sort?

 
Rep Power: 367

koyo makes radiators, arai makes helmets, not sure if they make other stuff.
secondary codes, as long as the parts work on my car, I will not lose any sleep over them

 
Rep Power: 116

Thanks. I’m not worried just curious.