Product Dimensions | 16 x 17 x 28.5 inches |
---|---|
Item model number | 51220 |
Minimum weight recommendation | 4 Pounds |
Maximum weight recommendation | 120 Pounds |
Minimum height recommendation | 18.1 Inches |
Maximum height recommendation | 57 Inches |
Material Type | Alloy Steel, Polypropylene, Plastic, Polystyrene |
Material Composition | 100% Polyester |
Care instructions | Covers: Machine wash cold, line dry. Shell and Components: Spot clean |
Additional product features | Fits 3 across |
Number Of Items | 1 |
Style | QXT |
Number of reclining positions | 12 |
Batteries required | No |
Orientation | Convertible Seat |
Rear-facing minimum child weight | 4 Pounds |
Rear-facing maximum child weight | 50 Pounds |
Forward-facing minimum child weight | 22 Pounds |
Forward-facing maximum child weight | 120 Pounds |
Harness type | 5-Point |
Item Weight | 32 pounds |
Learn more
No featured offers available
We feature offers with an Add to Cart button when an offer meets our high standards for:
- Quality Price,
- Reliable delivery option, and
- Seller who offers good customer service
-
-
-
-
-
-
-
6 VIDEOS
-
![](https://cdn.statically.io/img/images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Image Unavailable
Color:
-
-
-
- To view this video download Flash Player
Diono Radian 3QXT 4-in-1 Rear and Forward Facing Convertible Car Seat, Safe Plus Engineering, 4 Stage Infant Protection, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black
Brand | Diono |
Installation Type | Latch |
Material | Alloy Steel, Polypropylene, Plastic, Polystyrene |
Color | Black Jet |
Orientation | Convertible Seat |
About this item
- 10 Years One Car Seat - from Birth to Booster (4 - 120 lb) it's all you will need. Grows with your child, ultimate protection on every road trip. 4 modes in 1 seat!
- SafePlus Rear-Facing Engineering up to 50 lb. Includes 4 stages of newborn protection and our steel anti-rebound bar that reduces rebound rotation by up to 50% while increasing space for your growing child
- Fits 3-Across - our famous slim-fit design with SafePlus 8-layer side impact protection with zero compromises to safety, space, or comfort
- Mechanically engineered from reinforced automotive grade high-strength steel, our unique core shell shields and protects your child
- One hand easy-adjust 12 position SafePlus headrest completes 8-layers of enhanced, rigorously tested, side impact protection
- The original and only all-in-one convertible car seat that folds for travel or compact storage. FAA approved for airline use
You might also like
- Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Pink BlossomFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
- Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Gray SlateFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
- Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet BlackAmazon's Choicein Convertible Child Safety Car SeatsFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
- Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Blue SkyFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
- Graco 4Ever 4 in 1 Car Seat, Featuring TrueShield Side Impact Technology, Adjustable Harness System, Ideal for Newborns, Infants, Toddlers & KidsAmazon's Choicein 3-in-1 Child Safety Car SeatsFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
- Diono Radian 3R, 3-in-1 Convertible Car Seat, Rear Facing & Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Red CherryFREE Shipping by AmazonGet it as soon as Wednesday, Jul 31
What's in the box
From the manufacturer
![Radian 3QXT](https://m.media-amazon.com/images/S/aplus-media-library-service-media/aa61760b-e23a-4022-b339-d234ebb32e66.__CR0,0,1464,600_PT0_SX1464_V1___.jpg)
![Radian 3QXT](https://m.media-amazon.com/images/S/aplus-media-library-service-media/b2df4e62-9383-4482-8508-90a160f4019a.__CR0,0,1464,600_PT0_SX1464_V1___.jpg)
Safe+ Engineering
Safety starts within. Mechanically engineered, reinforced Safe+ Steel Core. Plus, Safe+ 4 stage Newborn Protection with Newborn Protection Insert, Newborn Travel High Wedge, 2-in-1 Infant Positioning Liner, & Newborn Harness Pads. Also includes Steel Anti-Rebound Bar, Side Impact Management Pod, and 8 Layers of Side Impact Protection. Added benefit of a 12 Position Headrest, and SuperLATCH Connectors
![Radian 3QXT](https://m.media-amazon.com/images/S/aplus-media-library-service-media/4f56f686-8324-4673-a750-9ed175907b0e.__CR0,0,1464,600_PT0_SX1464_V1___.jpg)
![Radian 3QXT](https://m.media-amazon.com/images/S/aplus-media-library-service-media/6428b2cc-5ea3-4823-945b-c182c1de3236.__CR0,0,1464,600_PT0_SX1464_V1___.jpg)
449.99 | MRSP (US Dollars) | 529.99 |
RF: 4-50 FF: 50-120 | Weight Limits (lbs) | RF: 4-50 FF: 50-120 |
| SuperLATCH | |
12 Positions | Adjustable Headrest | 12 Positions |
4-stage newborn | RF Protection | 4-stage newborn |
8-layer | SIP | 8-layer |
Yes | Anti-Rebound Bar | 2-in-1 |
449.99 | MRSP (US Dollars) | 399.99 |
RF: 4-50 FF: 50-120 | Weight Limits (lbs) | RF: 4-50 FF: 50-120 |
| SuperLATCH | |
12 Positions | Adjustable Headrest | 12 Positions |
4-stage newborn | RF Protection | 3-stage newborn |
8-layer | SIP | 6-layer |
Yes | Anti-Rebound Bar | Yes |
Safety Information
Product Description
The most advanced diono Radian all-in-one convertible car seat that transforms as your child grows from baby to booster for 10 years one car seat (4 - 120 lb). Now upgraded with 25 improvements from the award-winning radian 3RXT ad featuring advanced 4-in-1 rear facing protection with SafePlus engineering to provide the next generation in convertible car seat safety. Radian 3QXT provides complete baby and infant protection, with SafePlus newborn baby travel high wedge, newborn baby protection insert, 2-in-1 infant positioning liner and newborn baby harness pads for a custom fit from 4 lb. As your child grows the SafePlus steel rear facing anti-rebound bar increases stability and reduces rebound rotation by up to 50%, so you can keep them in a safe rear facing convertible car seat for longer up to 50 lb. As both a rear and forward facing convertible car seat the Radian 3QXT protects as they grow, with the SafePlus easy adjust 12 position headrest that offers a 22% increase in occupancy range from the Radian series. With 8 layers of side impact protection, a side impact management pod, SuperLATCH connectors (UAS Compatible) and safe 5-point harness, the Radian 3QXT provides advanced safety from rear facing to forward facing harness booster to belt positioning booster modes.
Product information
Technical Details
Additional Information
ASIN | B084Q3Z6ZK |
---|---|
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #13,186 in Baby (See Top 100 in Baby) #41 in Convertible Child Safety Car Seats |
Warranty & Support
Feedback
![](https://cdn.statically.io/img/m.media-amazon.com/images/I/419+XkYFmoL._SS75_.jpg)
Diono Radian 3QXT 4-in-1 Rear and Forward Facing Convertible Car Seat, Safe Plus Engineering, 4 Stage Infant Protection, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black
Share:
Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.
Where did you see a lower price?
Fields with an asterisk * are required
Product guides and documents
Compare with similar items
This Item ![]() Diono Radian 3QXT 4-in-1 Rear and Forward Facing Convertible Car Seat, Safe Plus Engineering, 4 Stage Infant Protection, 10 Years 1 Car Seat, Slim Fit 3 Across, Jet Black | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | ||
Price | — | $254.99$254.99 | $279.99$279.99 | -22% $93.99$93.99 List: $119.99 | $279.99$279.99 | $159.99$159.99 |
Delivery | — | Get it as soon as Monday, Jul 29 | Get it as soon as Wednesday, Jul 31 | — | Get it as soon as Wednesday, Jul 31 | Get it as soon as Wednesday, Jul 31 |
Customer Ratings | ||||||
Easy to install | 3.2 | — | 4.7 | 4.4 | 4.7 | 4.4 |
Safety Features | 4.3 | — | 4.8 | 4.6 | 4.8 | — |
Easy to clean | — | — | 4.6 | 4.4 | 4.6 | 4.4 |
Leg room | — | — | 4.6 | 4.7 | 4.6 | — |
Sold By | — | Spreetail | Amazon.com | Amazon.com | Amazon.com | Amazon.com |
material | Alloy Steel, Plastic, Polypropylene, Polystyrene | — | Foam, Alloy Steel, Fabric, Plastic | Plastic, Metal | Foam, Alloy Steel, Plastic, Fabric | Polyester |
min recommended weight | 4 pounds | 5 pounds | 5 pounds | 22 pounds | 5 pounds | 5 pounds |
max. recommended weight | 120 pounds | 65.0 pounds, 50.0 pounds, 120.0 pounds | 100 pounds | 100 pounds | 100 pounds | 65 pounds |
maximum height | 57 inches | 28.5 inches | 57 inches | 32 inches | 57 inches | — |
rear-facing min. weight | 4 pounds | 5 pounds | 5 pounds | — | 5 pounds | 5 pounds |
max rear facing weight | 50 pounds | — | 40 pounds | — | 40 pounds | — |
max forward facing weight | 120 pounds | — | 65 pounds | 65 pounds | 65 pounds | 65 pounds |
Videos
Videos for this product
2:27
Click to play video
Honest Review of Diono Radian 3QX Convertible Car Seat
Emily
Videos for this product
2:36
Click to play video
Diono radian 3QXT Rear Facing Instalation
Diono
Videos for this product
1:33
Click to play video
Diono radian 3QXT Booster Installation
Diono
Videos for this product
4:21
Click to play video
Diono radian 3QXT Forward Facing Installation
Diono
Videos for this product
0:59
Click to play video
Introducing radian 3QXT 2020
Diono
Videos for this product
0:58
Click to play video
Diono Radian Education Series - Seat Bracing
Diono
Videos for this product
0:27
Click to play video
Radian 3QXT - Fits 3 Across - Color the Journey
Diono
Looking for specific info?
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the safety of the infant toddler car seat. They say it adds another two layers of safety and has passed extensive safety tests. Customers are also satisfied with appearance, quality, and comfort. However, some customers have reported issues with adjustability, saying it's impossible to adjust the straps as intended. Opinions are mixed on ease of installation, size, and weight.
AI-generated from the text of customer reviews
Customers like the quality of the infant toddler car seat. They say it's well built, solid enough to protect their little boy, and feels unbreakable. The steel frame adds some heft to it and feels structurally sound. The seat also feels more stable when used with the grippy seat protector. Overall, customers say it’s a great overall product.
"...But right out of the box it’s a pretty weighty seat. The steel frame adds some heft to it and it FEELS structurally sound...." Read more
"...That gives us a lot of confidence in its stability and also its capability to absorb crash forces...." Read more
"...I mean airplane first class grade steel, heavy as all heck and feels insanely sturdy...." Read more
"...extensive safety tests beyond the required testing and will hold up exceptionally well in the event of a roll over crash...." Read more
Customers like the appearance of the infant toddler car seat. They mention that it looks really good, is constructed very well, and has a unique yellow and gray color. Some say that the seat is amazing, perfect for newborns and up, and that the shoulder belt covers are amazing.
"...So...if you want something that’s stylish and seemingly filled to the brim with safety features or you have a car where a center-seat install is..." Read more
"...Again, we are pleased indeed that the seat is not a behemoth like so many others, but can still fit 3 across for 3 boys...." Read more
"...a bunch of added pieces that seem like (are) bandaids to correct the bad design without re engineering the whole thing...." Read more
"...I love the sportier look too, fits right along with having a boy & being the car seat for my husband’s truck! Worth the hype!..." Read more
Customers like the comfort of the infant toddler car seat. They say it has great cushioning, makes them feel snug and cozy, and is sturdy yet soft for their baby. Customers also mention that the infant support gives a nice secure fit and that the memory foam pad for underneath their baby's butt is nice.
"...is the best I have seen for keeping the infant’s head secure and comfortable, and it will serve my toddler well too if and when he might actually..." Read more
"...of feature this car seat has to offer, primarily the build quality, comfort (kid approved), safety features.Let me give some context...." Read more
"...just feels awkward—they’re hard to push in and seem to stick so it feels “off”...." Read more
"...The seat comes with all sorts of cushions and pads and the seat looks very comfortable...." Read more
Customers are satisfied with the safety of the car seat. They mention that it adds another two layers of safety, it has passed extensive safety tests, and it keeps their children safe. The engineering on the seat is excellent, and the deep side walls provide an added sense of security.
"...I liked the ALL safety features considering that it could ONLY be installed on the driver or passenger side w/airbags...." Read more
"...Side Impact: We are quite impressed with the side impact protection features on the QXT that we felt are superior to the competitive product we..." Read more
"...Side impact protection- this seat offers greater side impact protection in both the shell of the seat and the attached pod than its predecessors did...." Read more
"...to offer, primarily the build quality, comfort (kid approved), safety features.Let me give some context. This is my second car seat...." Read more
Customers are mixed about the ease of installation. Some mention it's very easy to install, very comfortable for the baby, great cushioning, and the foot attachment for rear facing installs easily. However, others say it'll require a few tricks of the trade and you need patience to get it set up. They also mention the instructions are unintuitive and difficult to navigate.
"...Even the diagrams aren’t well labeled. At all. Hardest car seat to install-Ever...." Read more
"...If you’ve installed a car seat before, it’s pretty easy to figure out the latch system it uses; A tether up top that secures it behind the seat and..." Read more
"...seat tracks which decreases rotation in a crash, but it can be difficult to set up and leaves excess strap laying everywhere...." Read more
"...The foot attachment for rear facing installs easily and fits nicely into the seat bite of our back seat for an enhanced angle adjustment...." Read more
Customers are mixed about the size of the infant toddler car seat. Some mention that the width is great, while others say that it's too big for their Mazda3.
"...The only thing, is the seat is tall so we had to remove the headrest on our back seat so it would sit flush to the seat...." Read more
"...The foot attachment for rear facing installs easily and fits nicely into the seat bite of our back seat for an enhanced angle adjustment...." Read more
"...1. Rear facing installation is tough to get a good fit, and takes up a TON of space for the seat in front...." Read more
"...I love the sportier look too, fits right along with having a boy & being the car seat for my husband’s truck! Worth the hype!..." Read more
Customers are mixed about the weight of the infant toddler car seat. Some mention that it's first class grade steel, heavy as all heck, and feels insanely sturdy. However, other customers say that it’s heavy, installation is a pain, and the advertised maximum height and weight are not correct.
"...It’s definitely a 2 person job and not just because the seat is so heavy. Did I mention the manual is basically useless? It’s basically useless!!!..." Read more
"...But right out of the box it’s a pretty weighty seat. The steel frame adds some heft to it and it FEELS structurally sound...." Read more
"...It’s a bit on the heavy side, but no complaints from me." Read more
"This car seat is so heavy, and honestly does feel very safe. My child has a ridden in it since infancy and is now a forward facing toddler...." Read more
Customers find the adjustability of the infant toddler car seat difficult to use. They mention that the back angle does not adjust, the strap locking mechanism is much harder to adjust, and the seat reclines at an extreme angle. Some say that the rear facing tilt base can be a bit aggressive and the button to loosen the straps feels awkward. Overall, some customers feel that the seat is totally impractical while rear facing and that it's impossible to use in an SUV.
"...They’re hard as hell to adjust and I had to have the hubby tighten them because I couldnt manage the leverage it takes to pull them...." Read more
"...Finally, the rear facing tilt base can be a bit aggressive. The base is fixed so there is no in between if there isnt enough room...." Read more
"...The back angle does not adjust and this is an issue when your child is sitting so upright they move forward every time you brake...." Read more
"...The top side head protection adjusts for a growing child and the infant stuff, which we won’t use right now, is nicely padded...." Read more
Reviews with images
![Awesome Car Seat](https://cdn.statically.io/img/images-na.ssl-images-amazon.com/images/G/01/x-locale/common/transparent-pixel._V192234675_.gif)
-
Top reviews
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
Where I took off a star was the buttons for the adjustable straps to make them tighter to secure the car seat to the seat. They’re hard as hell to adjust and I had to have the hubby tighten them because I couldnt manage the leverage it takes to pull them. The button to loosen the straps just feels awkward—they’re hard to push in and seem to stick so it feels “off”. Makes you feel a little insecure about if you’ve done it right and car seat installation is one thing that you don’t want to make a mistake on. However, once you tighten the belts it doesn’t seem like they’ll loosen by themselves. Tested it by giving the seat a good tug in all directions.
When we were shopping for seats, I was going to go for a lower priced seat because it wouldn’t be used as much in daddy’s car. My hubby just suggested we buy the same Maxi-Cosi Magellan seat that I have in my 2019 Expedition because he liked the magnetic top harness buckle. But, I decided to hold off. After seeing the store model of the Diono seat, I got curious about the brand and did a little research. I’m glad that I did.
Daddy’s car is a 400hp Ford Explorer ST with bucket backseats and no middle seat for the added protection. I liked the ALL safety features considering that it could ONLY be installed on the driver or passenger side w/airbags. The extra plastic cube thingamajig that goes on either side depending on which side you install it on feels flimsy when you attach it. But a basic understanding of physics means that anything that can help add resistance to force from a side impact is a good thing. It adds another two layers of safety, surprising as it is, considering it’s basically a plastic box. Another plus is the harness buckle button is larger and EASY to press. My Maxi-Cosi’s buckle is small and a complete nuisance to press with nails and a wiggling tot. The cup holder seems like an after-thought though.
I figured the cost of the seat is worth it—especially since it will support up to 120lbs. Plus it’s in a pretty kick-ass red that complement his dad’s car which is murdered out black with red brake calipers and red interior lighting.
So...if you want something that’s stylish and seemingly filled to the brim with safety features or you have a car where a center-seat install is impossible, this seat is the way to go. Just make sure you got an extra strong set of arms to help with the belt tightening.
I am a 34 year old mom of 3 boys aged 3, and 4 months. Before becoming a mom, I worked more than 10 years in the baby products industry, and so I am quite familiar with carseats. The Radian 3QXT is our fourth and most recent carseat. Our other carseats are from different brands, and we have been reasonably satisfied with all of them. That said, the Diono Radian 3QXT is something special indeed!
Let me explain why my husband and I like the 3QXT so much: 1) This carseat is rock solid. That gives us a lot of confidence in its stability and also its capability to absorb crash forces. The steel frame just seems more sturdy than other products we considered. 2) Despite its robustness, the 3QXT is actually less bulky than other similar seats we looked at, which allows us to fit 3 across the back seat—an important feature when you have 3 boys under 5 years old like us! It almost seems as though the engineers used every inch of the seat in the most efficient manner to save on space. 3) The foot attachment for rear facing installs easily and fits nicely into the seat bite of our back seat for an enhanced angle adjustment. 3) Side Impact: We are quite impressed with the side impact protection features on the QXT that we felt are superior to the competitive product we considered. The double protection fabric/foam layering for infants is very well done, and the generously deep side walls give us an added sense of security. 4) The QXT head support is the best I have seen for keeping the infant’s head secure and comfortable, and it will serve my toddler well too if and when he might actually use it. 5) While my primary concerns are safety, fit and comfort, I cannot help but be impressed with the aesthetics and finishes of the QXT.
I rate this seat very highly, feeling an added sense of security knowing that my son will be riding as safe as it can get with the Radian 3QXT. Again, we are pleased indeed that the seat is not a behemoth like so many others, but can still fit 3 across for 3 boys. This is the convertible seat to buy! Ps. Be sure to read the installation instructions and/or watch the video.
Top reviews from other countries
![](https://images-na.ssl-images-amazon.com/images/S/amazon-avatars-global/4f98fd5c-14f4-4205-96c7-413b3c491ba1._CR109,0,281,281_SX48_.jpg)
![](https://images-eu.ssl-images-amazon.com/images/S/amazon-avatars-global/default._CR0,0,1024,1024_SX48_.png)
One negative- too big when used in rear facing
Overall the best seat out there.
![](https://images-na.ssl-images-amazon.com/images/S/amazon-avatars-global/default._CR0,0,1024,1024_SX48_.png)
They are a great seat. They are fully adjustable, solid construction, and the covers come off to machine wash. The fact that it's a narrow seat doesn't mean it's not comfortable; the seat actually expands if you have the room. It's also a 10 years from PURCHASE expiry, so it'll last quite a while.
The customer service from Diono is great as well. We had a plastic piece break on the side impact device, and they promptly sent out a replacement after a couple photos were sent.
The only downsides (and I don't think it's that much of a downside) are that this seat is heavy, and that's because of the steel frame construction, and the price.
At about 25 lbs it's a bit awkward to carry around, but we also bought a carry bag and it works excellent.
The cost is a bit high if you don't find it on sale, but if you find it at $430 CAD, its pretty decent deal for what you're getting.
![](https://images-na.ssl-images-amazon.com/images/S/amazon-avatars-global/default._CR0,0,1024,1024_SX48_.png)
The only issue is the size. If you have a small car, I wouldn’t recommend this for rear-facing. It’s absolutely huge. I have a Mazda CX-5 (crossover SUV) and I had to move the front passenger seat all the way to the dash to fit it in rear-facing mode. Anybody in the car besides baby had to sit in the back. Now that it’s forward facing its great.
![](https://images-na.ssl-images-amazon.com/images/S/amazon-avatars-global/default._CR0,0,1024,1024_SX48_.png)