
WonderFold W2 wagon adapter for Britax seats
- Model
- W2CSA-BRT
- List price
- $99.99 (maker's price when checked)
- Sold as
- Car Seat Adapter for Stroller Wagon - W2 Elite | Luxe / Britax
- Strollers
- 1
- Car seats
- 1
The WonderFold W2 wagon adapter for Britax seats (model W2CSA-BRT) lets an infant car seat ride on the WonderFold W2 wagon. Makers list 1 seat for it, from Britax. WonderFold lists it at $99.99.
How to put it on

- Set the stroller wagon's brake and unbutton the wagon fabric, starting on the front half.
- Line the bracket screws up with the holes in the wagon frame, then insert and tighten them on both sides.
- Fold the fabric back over the frame and fasten it.
- Screw the car seat supports onto the adapter.
- Set the adapter on the brackets, then lock it by putting the metal clip over the bracket and pushing the clamp in.
- For extra stability, lower the car seat handle and strap both sides of it to the wagon's bottom crossbar, then pull tight.
Common mistakes
- A single car seat adapter must go on the front half of the wagon; with two, install the front one first.
- With two car seats, both must face sideways.
Retold from WonderFold manual (PDF). Follow the manual that came with yours.
Is this the right adapter for you?
Before you buy
- W2 Original and W2 Original Target Exclusive owners must buy the 'W2 Elite/Luxe' adapter option.
- Seat models from 2024 onward are not guaranteed; only pre-2024 seat models were tested.
- Only one adapter of this type fits on a W2 (non-Pro) wagon.
Which car seats it fits, by stroller
Manuals and downloads
Straight from the makers. The manual that came with your product is the one to follow.