Below is a complete list of bulbs used throughout the 2001 Toyota 4Runner(there is also an attached copy).
I spent hour upon hour Googling them, then I spent some more time taking stuff apart to see for myself, then I was wrong a few times anyways .

Hopefully, you wont have to do the same!

Location Bulb Type/Number Quantity
Gauges #24 3
Instrument Lights #74 32
4-Wheel Drive Indicators Neowedge B/T4 2
Center Differential Indicator Neowedge B/T4 1
Key Ring #74 1
Hazard Button Neowedge A/T3 1
ECT/Rear Defrost Neowedge A/T3 1
Rear Defrost On 3mm LED 1
Rear Window Controls Neowedge A/T3 1
Passenger Seatbelt Indicator 5mm LED 1
Climate Controls Neowedge B/T4 3
A/C On 3mm LED 1
Air Return On 3mm LED 1
12v Outlet Ring N/A 1
Ashtray #74 1
Automatic Shifter #74 1
Glove Box #74 1
Vanity Mirrors Fuse Bulb 2
Map Lights BA9s 2
Dome Lights DE3175 2
Drivers Window Controls 3mm LED 2
Passenger Window Controls SMD LED 1
Headlights 9003/H4 2
Front Side Marker #194 2
Front Turn Signal 7440 2
Rear Turn Signal 992 2
Stop Lights 7443 2
Back-up Lights 921 2
Parking Lights #194 2
High Brake Light 921 1
Licence Plate #194 2

Attached Files

2001 4Runner Complete Bulb List.doc (48.0 KB, 6469 views)

Awesome, thanks for the work!

Thanks for going to the trouble to document And post it here, it's saved away for later!

My HERO!! Ima use this next month for sure. Also, @redstar where did you find had the majority of your replacement bulbs? I replaced my a/c controls and they work, then I replaced my rear defroster, and rear window controls and it shorts out my tail fuse...tried putting stock back in and they work, anytime I put LEDs in it shorts my tail fuse. You run into this issue?

Holy moly! You're the man! Now I feel like I should replace every bulb in my truck though...

Here's my write-up for an 01 LED dash swap. Has direct links to the bulbs I used, pictures of how to remove everything, bulb differences, and a bulb chart.

LED Dash Bulb MOD

I need this for a '97. I need to research a taillight led swap haha very nice man.

@nor_cal51501 I got them all from superbrightleds.
@MStudt Dude nice work! I replaced all mine in the cold and dark so I really didnt have the patience to take the pictures :S. I literally got all the same bulbs that you did. Im not very happy with how the gauges turned out though. Gonna replace them with the 3 SMD #74 bulbs if they'll fit in the same place...

Does this only apply to LEDs, or does it apply for the standard bulbs as well? I got some regular #74 bulbs for my glove box, AT shifter, and ash tray, but the bulb seemed to be just a little too big and wouldn't work. If I check the Autozone or O'Reilly's website for the glove box or AT shifter, it comes back with 2721. I have a '99 Limited so it's possible some of the model years were a little different, but I doubt it.

Sylvania has a lamp replacement guide here: https://www.sylvania.com/en-us/appli...s/lrgmain.aspx
It's not as in-depth as what the OP put up, but has a lot of them. It shows the 2721 for the glove box as well. superbrightleds has a cross reference chart you can use: LED Car Bulb Cross Reference | Super Bright LEDs

So, yeah, Sylvania says the glove box bulb is a 2721. The same size bulb also goes into the shifter and ash tray. On the LED Cross Reference list, it says an LED 74 replaces a 74, 2721, etc. So a regular 74, I think, is slightly larger than a regular 2721, but in the LED world, the LED 74 works for all of those conditions. So I think it would be helpful if, in addition to the list provided by the OP, we also try to come up with a list for standard (non-LED) bulbs. It might also be helpful to refer to LED bulbs, as "LED 74", etc just to distinguish the LED size from the regular bulb size.

Awesome info!!!!

Win.

@vm_boy every single one of the bulbs was a tight fit. Try taking some pliers and compressing the contacts a tiny bit. And from what I gathered, most bulbs were the same across different model years for the 3rd gens.

Subbed. Thanks!