Diono Radian 3R All-in-One Convertible Car Seat - Black Jet

Diono Radian 3R All-in-One Convertible Car Seat - Black Jet

Model Number: 54020
Web Code: 14495550
Sold and shipped by | 5.0 seller rating (4 reviews)

Available online only

Delivery times vary by location. Most Marketplace items leave sellers' locations within 2 business days. Allow additional time for shipping.


Radian® 3R is the original 3 across All-in-One convertible car seat. Now rear-facing even longer (up to 22.7 kg / 50 lb) and suitable from birth to 54 kg / 120 lb, expect 10 years of safety from just one car seat.


No information available.

Seller Return Policy

Read return policy

What's included:

  • Radian� 3R� All-in-One Convertible Car Seat, Instruction Manual, SafeStop, Harness Pads, Rear Facing Base, Lap Belt Cushion, Rear-Facing Top Tether Connecting Strap


10 YEARS 1 CAR SEAT - With 4 ways to travel from birth to booster, the radian® 3RXT adapts as your child grows to offer a custom fit from birth up to 120 lb.

THE ORIGINAL 3 ACROSS - Built with our famous radian® slim fit design, to fit 3 across in most vehicles without compromising child or passenger comfort.

REAR FACING FOR LONGER - Designed and engineered to keep your child rear facing even longer up to 50 lb (approx. 4 years old).

HEAD SUPPORT INFANT INSERT - The removable head support infant insert features padded support for cocooned comfort. Then as your infant grows simply remove..

STEEL CORE - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect.


Rear-facing: 5 - 50 lbs / 2.3 - 22.7 kg

Forward-facing: 22-65 lbs / 10-29.5 kg

Booster mode: 40-120 lbs / 18-54 kg

Seated torso height: 7.5-16.5″ / 19-42 cm

Overall maximum height up to 57″ / 144.8 cm

Product Condition
Brand New
Car Seat Type
2-in-1 Convertible Car Seat
Car Seat Orientation
Rear-facing Car Seat
Forward-facing Infant Car Seat
High-backed Booster Seat
Backless Booster Seat
Harness Points

Safety Requirements

Minimum Seat Weight Capacity
2.3 kg
Maximum Seat Weight Capacity
54 kg
Minimum Child Height
46 cm
Maximum Child Height
145 cm
Weight Capacity:Front Facing(Min)
2.3 kg
Weight Capacity:Front Facing(Max)
54 kg
Weight Capacity:Rear Facing(Min)
2.3 kg
Weight Capacity:Rear Facing(Max)
22.7 kg
Weight Capacity:Booster Seat(Min)
2.3 kg
Weight Capacity:Booster Seat(Max)
54 kg

Popular Features

Cup Holder
Washable Fabric
LATCH System
Black Jet
Country of Origin


43.2 cm
72.4 cm
40.6 cm
11.74 kg
Shipping Charges
Free standard shipping may be available on orders over a minimum amount (before taxes, fees, and promo codes). Shipping charges may vary based on item size and your shipping address. Want a shipping charge estimate? Simply add an item to your cart, then access the cart and enter your postal code in the shipping estimate section.
Processing Time
Most items ship within 2 business days after an order is placed*. Allow additional time for shipping to your address.
*Please note: If an item you ordered becomes unavailable, you'll be notified and a full refund will be processed within 2 business days.
Shipping Area Restrictions
Shipping is not available in the following areas*:
  • No restrictions in Canada
*Please note: Shipping area restrictions may vary for large items. If an item can't be shipped to your address, we'll let you know during the checkout process.
Product Category
Car seats
Return/Exchange Period
30 days

To protect the safety of our customers; this product cannot be returned if opened

Learn more about returning a Marketplace product