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Diono

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

    • Based on 707 reviews
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Availability: In Stock.
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Arrives Tuesday, May 21
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Style: QXT


Color: Black Jet


Features

  • THE ULTIMATE RADIAN ALL-IN-ONE CONVERTIBLE CAR SEAT - From infant to booster seat, rear and forward facing the Radian 3QXT adapts as your child grows for 10 years of use (4 - 120 lb 1.8 - 54 kg)
  • 4-IN-1 NEWBORN PROTECTION - Designed for safe rear facing travel from 4 - 50 lb 1.8 - 22.7 kg complete with Safe plus inserts and Safe plus steel anti-rebound bar to reduce rebound rotation by 50percent
  • SAFE plus ENGINEERING - Our most rigorously tested Radian all-in-one convertible car seat; featuring Safe plus steel rear facing anti-rebound bar, steel reinforced frame, advanced side impact protection and diono SuperLATCH attachment
  • ONE HAND EASY ADJUST 12 POSITION HEADREST - Contoured to improve child head containment and provides a 22percent increase in occupancy range from the radian R series
  • THE ORIGINAL RADIAN 3 ACROSS - Built with our famous Radian slim fit convertible design for a 3-across option only with Diono Radian combinations without compromising child or passenger comfort. Feel safe having your children secure in the backseat

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 pounds / 1.8 - 54 kg). 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 pounds / 1.8 kg. 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 pounds / 22.7 kg. 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.


Brand: Diono


Installation Type: Latch


Material: Alloy Steel, Polypropylene, Plastic, Polystyrene


Color: Black Jet


Orientation: Convertible Seat


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


Country/Region of origin: ‎China


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Sturdy, safe, & cushioned
Style: QXT Color: Purple Plum
Feels super sturdy, yet cushioned and soft for baby as it has the memory foam inserts! Absolutely love it and I now feel safe with my baby in the car! I was skeptical of purchasing after seeing some negative reviews, but I personally love ours and haven't had any issues. It was a little hard to install, especially since mine didnt really come with clear instructions or anything, but I got it figured out thanks to YouTube and basic knowledge of car seat installations. ... show more
Reviewed in the United States on September 11, 2023 by Amber Lynne
    • A Baby Tank!!!
Style: QXT Color: Red Cherry
Since I purchased this for a 15 month old, I can’t attest to using it for an infant with all the additional padding. 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. 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 a lateral belt that you snake through the appropriate holes in the bottom/back and secure the buckles with a snap to the car’s latch system on either side. One thing I particularly like is the bottom belt latch strap has pull-release loops so you don’t have to twist your wrists in awkward positions to release the belt by pushing the buttons. 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. It took about 15 minutes to install it forward facing. 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. ... show more
Reviewed in the United States on March 4, 2021 by NR$JAKI
    • Beast of a Seat
Style: QXT Color: Gray Slate
Let me preface this by saying I am a professional nanny who has taken multiple car seat classes and done hundreds of car seat installations for a variety of seats and cars. These Diono seats are tanks. They are not easy to install and require a few “tricks of the trade”. I was able to get a safe install (and had a CPST verify) while nine months pregnant in the Florida summer heat without TOO much trouble, but I would not recommend this seat if you are going to be switching it between cars or having someone unfamiliar with car seat installations transporting your child (grandparents, friends, etc). I drive a 2016 Honda Civic and my two year old son has been in a Diono Randian RXT installed in the middle seat since birth. I chose Diono because I needed a slim seat to maximize back seat usage and I wanted something that would last from newborn to booster. I was very excited about the new QXT seat for my newborn because it addressed some of the issues I had with the RXT. 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. I feel completely comfortable having my newborn in the rear passenger seat. Anti-rebound bar- the older Dionos have a strap you attach to the front seat tracks which decreases rotation in a crash, but it can be difficult to set up and leaves excess strap laying everywhere. The anti-rebound bar is supposed to be the replacement, however, due to the design of the seats in my car, the bar does not completely brace against the seat. It will still reduce some rotation in a crash, but not as well. Newborn usage- my first son was two weeks late and a decent size, so the RXT worked well from birth but would not be ideal for a small baby. However, the QXT has some awesome newborn features and keeps the new baby at a perfect angle and keeps his head from flopping around. Rear facing foot attachment- the foot attachment at the bottom slips into the crack of your back seat to achieve the desired angle, but I’ve learned that some vehicles do not have a suitable crack for this to be positioned in. It is pretty much impossible for me to get a safe rear facing install in my mother’s Subaru, so I have a Chicco nextfit as an easy to install spare seat for her car. This issue hasn’t been rectified in the new QXT. Overall, I am quite pleased with the seat so far. My older RXT has held up well and my toddler is always comfortable so I expect nothing less from this new series. I love that I can have both boys in the back of my little car along with full usage of my rear driver’s side seat. This seat has also passed extensive safety tests beyond the required testing and will hold up exceptionally well in the event of a roll over crash. Be sure to research compatibility with your vehicle and give yourself plenty of time to achieve a safe install after reading the manual and looking up videos online. ... show more
Reviewed in the United States on August 5, 2020 by Angela
    • Measurements easily available would help
Style: QXT Color: Black Jet
Nothing wrong- 3 of these car seats just wouldn’t fit car rear facing
Reviewed in the United States on August 14, 2023 by Joseph Ramos

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