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Finding the right car seat just got easier - check out our new FREE car seat selection tool!

CAR SEAT SELECTION TOOL
TRY OUR FREE CAR SEAT SELECTION TOOL
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Back to the convertible car seat shopping tool (🇺🇸)
Back to the convertible car seat shopping tool (🇨🇦)

Diono Radian 3QXT SafePlus

Quick facts:

Country

Even the same car seat can be a bit different across the border. You can switch between the US and Canada car seat tools here.

  • CA

Useful life/expiry

  • 10 years from date of manufacture

Price

Price shown is approximate, and subject to change by the car seat manufacturer at any point. Pricing may be lower if on sale.

  • $549
  •  CAD

Shop this seat

on sale

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Modes of use

Rear facing specifications

  • Rear facing weight minimum: 4 lbs
  • Rear facing weight maximum: 50 lbs
  • Rear facing height maximum: 44"
  • May also be outgrown rear facing: When the top of the child’s head is less than 1.5" below the top of the car seat’s shell

Forward facing specifications

  • Forward facing weight maximum: 65 lbs
  • Forward facing height maximum: 57"

Booster specifications (if applicable)

  • Booster modes available: High back booster
  • Booster mode weight maximum: 120 lbs
  • Booster mode height maximum: 57"

Technical specifications

  • Seat weight: 32 lbs
  • Seat width: 17"
  • Crash replacement policy: Follows NHTSA's "Minor crash criteria"
  • Number of (crotch) buckle strap positions: 3
  • Lowest harness position: 7.5"
  • Highest harness position: 16.5"

Features

allows vehicle seat protectors*
anti-rebound bar or panel
approved for use on aircraft
built-in recline foot or sled
cupholders available
cupholders included
extended rear facing possible
harness pads included
high back booster mode available
infant insert/padding included
machine-washable fabrics available
narrow (3-across more likely)
push-on LA connectors

The details:

Back to the convertible car seat shopping tool (🇺🇸)
Back to the convertible car seat shopping tool (🇨🇦)