Diono Radian 3QX Ultimate 3 Across All-in-One Car Seat

Authorized Dealer

Color: Black Jet

Sale price$369.99

SKU: 50320-NA-01


The Radian 3QX model, is a luxury standard convertible car seat. It's created with multiple layers of durable material, and a steel rebound bar, tested in the most rigid car crashes, for optimal safety. With 4 optional positions in booster or car seat configuration, weight capacity of 120 lbs, adjustable seat, head rest, and 5 point harness loops, it is bound to support endless years of safe travel. Its compact structure enables 3 seats to be aligned in a row, with guaranteed comfort. It also includes a newborn protective insert and a high wedge to safely keep your baby in a comfortable flat back position. To maintain cleanliness, the seat fabric easily removes for washing.



  • Fold flat for easy carrying.
  • Certified for use on aircraft as they are FAA approved.
  • Easy click installation.
  • Comfortable newborn insert to support head and enable flat back position.
  • Anti Rebound bar along with 6 layers of durable protection for maximum safety.
  • Reinforced steel cup holder. 
  • Anti slip 5 point padded adjustable harness.
  • Installed technology absorbing pressure of abrupt stops.
  • Adjustable head rest, and expandable sides for maximum comfort. 
  • Steel frame, high density plastic, polyester knit, EPP, EPS
  • Machine wash and dry.
  • 12 months warranty - extended to 36 months when you register with Diono® post purchase
Dimensions & Weight
  • 16" x 17" x 28" 
  • 25.6 lbs.
  • 4-50 lbs. rear capacity to prolong safest travel position for infants.
  • 22-65 lbs. forward facing.
  • 40-120 lbs. Booster mode.
  • Maximum height 57".

Shipping & Returns Policies

Customer Reviews

No reviews yet

Payment & Security

Payment methods

American Express Apple Pay Diners Club Discover JCB Mastercard PayPal Venmo Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed