Reddit reviews NTE Electronics 77-4010D24 High Speed Fan, Ball Bearing, Thermal Plastic Wire Lead, 40 mm L x 40 mm H x 10 mm T, 24 VDC, 7000 RPM, 7.73 CFM

https://www.amazon.com/gp/aw/d/B00ZSA83EW?psc=1&ref=ppx_pop_mob_b_pd_title

I just started unscrewing stuff to be honest.

I replaced my hotend fan with this

https://www.amazon.com/gp/product/B00ZSA83EW/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1

https://smile.amazon.com/gp/product/B00ZSA83EW/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I'm in the middle of converting mine to an e3d v6 clone, bullseye mount, bltouch clone (that I had working well before), stock parts cooling fan and this 40mm heatsink fan:

https://www.amazon.com/gp/product/B00ZSA83EW/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1.

How are you mounting everything?

Thanks for the information!

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Fot the Hero me, i need this fan?: https://www.amazon.co.uk/gp/product/B07BS8334N/

Or this kind? https://www.amazon.com/gp/product/B00ZSA83EW/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1

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I am litle confused about the correct fan! Thanks

Here is a quickly made fan blade based on a render of the Ender 3. It's assuming that your hotend fan blade broke, not part cooling. I have no clue if it will work or not. Use super glue to attach it. https://www.thingiverse.com/thing:3758044

Honestly, it probably won't work out well. You might consider a replacement fan from Amazon. But this might get you going.