Micro Swiss Heater Block Upgrade with Silicone Sock for CR10 / Ender 2 / Ender 3 / ANET A8 Printers MK7, MK8, MK9 Hotends

Awesome upgrade for any compatible printer. Beware it seems to work better at about -5c from your normal temp before this was installed (for me)

Broke a nozzle off in my old heater block. This was an extract fit for the Ender 3 kit. Fits perfect and works just as well as the old one

This heater block is not fully compatible with a standard Ender 3 heat sink. The photo shows my old healer black which clearly has two screw holes on either side of the screw in for the heat sink. These two screws go into the heat sink and secure the heater block from rotating. This product DOES NOT have these two screw holes, so I returned this product and just got an entirely new assembly and successfully replaced it. Please be careful if you have a stock Ender 3. I dont know the situation on the V2, Pro, etc.

Quality made product. Slightly different from the stock heat block but works great.

Perfect for what I needed and way cheaper than buying a full new hot end

This fits the Gulf Coast Swiss hot-end clone, too.

Just remember you dont get the thermal tube that goes into the top of the block. That comes with the original hotend. That said, I explained my problem to the sell and they were nice enough to send me a new tube.

This hot end is my favorite. It was one of the first things I replaced on my Ender 3 pro and it has served me well for several years. I’ve had no issues with print quality with this hotend and it feels very well built. I recently had an accident that caused the threads to be stripped in my old heater block but it was a simple fix with this replacement part.

Direct replacement

will buy again