How do I plug these?

I have replaced my tonneau cover and no longer need the drain hoses that were in use with the oem cover. How can I easily/best plug these holes remaining? (I don't know what these plastic ports are called?

 

Go to Lowes or Home Depot, they have those speciality draws in the hardware/screw isle. In those drawers they have rubber grommets.

 

I think you want a hole plug as grommets usually also have holes in them.

 

The best solution is to just order the bed hole plugs from Toyota, pop the old ones out and push in the new.

https://www.sparksparts.com/oem-parts/toyota-plug-hole-474190c010

 

You could probably post them on here for someone to swap them.

someone installing a cover with drain tubes might easily help you out.

 

Do you have better pictures? And what size are the holes?

 

The plug is 4" by 2 1/4". The hole for the drain hose is 3/4". The small pinholes near the top and bottom of the plug is about 1/8".

 

Plug with only the pinholes

 

Your solution is below.
Replace the OEM plugs.

However, you may not need to bother replacing the ones with the 1/8" holes.
It kinda looks like the OEM plugs may have those 1/8" holes...

I can't tell since mine have bed liner on them..
But it sure looks like my first pic has that small hole in the top..

@JohnLakemanyou are a great American.
Saved me the time of looking up that part number.
Thank you.

 

All the credit goes to @Roman.

I tried to find the part number without luck. I remembered @Roman had posted the part number months ago.

Unfortunately, no picture for the skeptical, only a schematic of about a hundred Toyota plugs.

 

Use black silicone. Smooth off the surface with a utility knife blade

 

Yup I just used silicone sealant but I do use the holes still for wiring running into the bed for the DC-DC charger and solar panel.

 

Use the grommet that use for HID headlights.
It locates on the wire for the ballast. Check any auto store

 

Found some Toyota molding push retainers that fit. Tried to post a pic and couldn't. Thanks for all of the responses.