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WeatherTech Under Seat Truck Storage Box - Black

WeatherTech Under Seat Truck Storage Box - Black

Item # WT4S001
Our Price: $199.95
You Save: $37.99
Under Seat Storage

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Shipping Weight: 12 lbs
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Keep your truck clean and organized with this under seat storage box. Custom made to fit your vehicle. Large capacity is perfect for storing jumper cables, tools, and all sorts of supplies. Great Prices for the best under seat storage from WeatherTech. WeatherTech Under Seat Truck Storage Box - Black part number WT4S001 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (127)
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  • Videos (2)
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WeatherTech Under Seat Storage - WT4S001

  • Rear Under-Seat Organizer
  • Black
  • Cargo Box
  • WeatherTech

Keep your truck clean and organized with this under seat storage box. Custom made to fit your vehicle. Large capacity is perfect for storing jumper cables, tools, and all sorts of supplies.


  • Custom-fit storage box fits perfectly beneath the rear seats of your truck cab
    • Seats act as lid for box
  • Large capacity is perfect for storing jumper cables, tools, and all sorts of supplies
  • Built-in dividers keep everything organized
  • Chemical-resistant construction
  • Easy, strap-in installation
  • Black, textured finish lends a from-the-factory look
  • Made in the USA
  • Limited lifetime warranty

4S001 WeatherTech Underseat Truck Storage Tray - Black

Installation Details WT4S001 Installation instructions

This Product Fits The Following Vehicles

Video of WeatherTech Under Seat Truck Storage Box - Black

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for WeatherTech Under Seat Truck Storage Box Review - 2021 Ford F-150

Hey, everybody. How's it going Today, we're gonna be going over the WeatherTech Under Seat Truck Storage Box here on our 2021 Ford F-150. So this is what our truck storage box looks like installed in our vehicle here. Now, you'll notice the texture, the look of the material, really mimics all the factory, interior paneling. It's really hard to tell a difference between the two. This one's a little bit shinier since it's newer, but over time, I really think you're not gonna be able to distinguish the two panels, and this is gonna look pretty much like it would if it left the factory.

So if you guys are anything like me, I'm very OCD about my stuff. I like my vehicle to be nice and clean. Everything needs to have its own exact place. And with these trucks here, they really don't give you a lot of options for that. Therefore, adding this under seat storage system here, it's gonna give you guys a great place to store all your items you're gonna need out on the road since you can see we have our jumper cable, some ratchet straps here which every truck owners should have.

If you guys are hunters, you could easily store a rifle case under here. Overall, it's just a great way to keep track of all your items so they're in one place. You know where they are when you need them. A great thing about this under seat storage system is in the name. It actually gets stored underneath the seat, therefore although it looks rather large now, we're not actually reducing any of the cargo space of our vehicle here.

The space under the seat before is already gonna be unused, and we really can't utilize that any other way. Therefore, having a storage box here, as we can see, we put our seats down, it's not gonna make contact with the seats at all, and it's just gonna give us a great way to utilize the unused space that we had before. So we showed you that the seats are easily able to be sat back down. They don't actually make contact with the truck storage box here. That's because this is a custom fit, therefore this is actually molded specifically for this F-150 here.

It's gonna match the contours of the floor here and the height it needs to be so it doesn't make contact with the seat. So this is actually a custom-fit item designed specifically for your F-150. They do make universal under seat storage systems, but they don't always work as well. They also require sometimes modifying. This particular thing here, it's gonna be something we can install without having to worry about doing any modifications. So something else we'll notice if we take a closer look inside our storage tray here is that we have these little, handy, built-in dividers. Now, these are gonna allow us to really organize our different contents with just one long, open piece of storage. We're gonna throw stuff in there. But although we do know it's gonna be in one place, we're gonna have to fish it and dig throughout here, whereas if we have some smaller items, we could easily set them between the dividers and keep track of them a lot better. I'd also like to point out with that this is actually chemical-resistant, therefore if we wanted to keep some spare oil here under the seats, we could put it in here without having to worry about it spilling and seeping into our carpet. If it did spill, it would actually stay contained here in the storage container. So now that we've gone over some of the features of the storage system here, let's go ahead and show you guys how easy it is to install. So the first thing we need to do is we need to take our safety strap that comes in your kit. If we turn around our under seat storage system, we should on the back side see two little slots there. So what we're gonna do now is we're just gonna remove the buckle there. So just take this off. Then we're gonna take one of the strap. We're gonna feed it through the bottom hole there. We're gonna come underneath there. We're gonna feed the other end at the top just like that. Then we can go ahead and reattach our buckle just like so the same order we moved it. And there we go, just like that. So now we need to go ahead and fold our seats up against the backrest, clear everything out of the rear of our vehicle here, and now we can take our storage system and simply place it into position, slide it over, and butt it up against the back of our plastic just like so. And now we're ready to secure the under seat storage system here to the vehicle using the brackets here that hold our rear seats on. Now, if you find another method that's gonna work for you, that's totally fine. There's not really an exact process to this. But, basically, we're just gonna be looping the strap around the metal seat brackets there and then securing it to hold it in place. But if I'll take the female into the strap here, I'm just gonna loop it around the back of the bracket, reach in there like so, pull it out on this side here. And then I'll take our male buckle, I'll clip it into there. Now I'll pull this nice and tight here. I'll take our extra strap. I'm just gonna tuck it back there. And now the next thing I'm gonna do is I'm gonna go ahead and lower the seat just to make sure our straps don't interfere with any of the lacking mechanisms. I can look down in there. The strap isn't binding on anything. Test the seat as well. Looks to be clear there. So, yeah, no problems with how we have that mounted. And, again, if you find another bracket that works a little bit better for you, that's totally fine. We just basically wanna stop or limit movement here of this under seat storage system. I will say it may seem kinda loose now, but once we get this thing loaded down, it's gonna make it much more secure. And now that we have this storage system secure, we're ready to load it up with all those items we may need out in the road. We have our ice brush and ice scraper here. Got a spare umbrella. Every truck owners should have some ratchet straps with them. And for emergencies, we also have some jumper cables. Then last but not least, we have a breaker bar with a socket for our lug nuts. But now that we've got it loaded up here, all we need to do is simply put our seats back down, and now we're ready to haul the family with us. And that's gonna do it today for our look at the WeatherTech Under Seat Truck Storage Box here on our 2021 Ford F-150..

Customer Satisfaction Score:

Customer Reviews

WeatherTech Under Seat Truck Storage Box - Black - WT4S001

Average Customer Rating:  4.6 out of 5 stars   (127 Customer Reviews)

Keep your truck clean and organized with this under seat storage box. Custom made to fit your vehicle. Large capacity is perfect for storing jumper cables, tools, and all sorts of supplies.


The sides are relatively flimsy, and the bottom edges (where the storage box meets the truck carpeted floor) are sharp, not rounded. So, the storage box does not easily slide out to access the items in the box. I had a Du-Ha Storage Box for my previous truck, which was higher quality. I recommend getting a Du-Ha instead of WeatherTech.


Just another great Weathertech product!!


A great fit in my 2021 f150 with weathertech floor mat


Perfect for storing all of my stuff beneath the seat


So far it's okay weartech floor matt fitness affected this review

Ford F-150

Great organizer for back seat of F150 Super Cab. Reasonable price and short delivery time.


It didn't fit under my back seat
leat two inches longer than my seats.

Etrailer Expert

Sierra K.


Thank you for your review. This only fits SuperCrew Cabs on your vehicle.

2019 Ford F-350 Super Duty

Thank You so much!
in 2 days it was
in my front door
would comment it to anyone

2019 Ford F-150

Fit great and easy installation.


This is awesome. Plenty of storage room and fit perfectly under the seat. You wouldn’t know it’s not part of the factory trim


I love it. Works great.

2021 Honda Ridgeline



This is a great product and fits perfec tly.


Helps keep stuff organized

2021 Ford F-150

The whole transaction went very smoothly compared to other transactions I has been in.
Thank you.


Great ,prompt service,good prices.Can't say enough.

2021 Ford F-150

Ordered it, got updated and received the goods in a couple days! Great


2023 Honda Ridgeline

2015 Ford F-150



by: 06/15/2023
2023 Honda Ridgeline



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Info for this part was:

Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Ronnie R
Written by:
Ronnie R
Employee Jonathan Y
Video by:
Jonathan Y
Employee Conner L
Test Fit:
Conner L
Employee Erin H
Edited by:
Erin H

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