We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Three silver aluminium heatsinks, 22.3 mm wide by 43 mm tall, M6 thread, 3 mm bore

Unique-Bargains

Unique-Bargains V6 Heatbreak Heatsink 3mm 3pcs

SKU CH-7AVM-DV426

Aluminium-alloy heatsink cools V6 J-Head extruders for 3 mm filament, M6 thread, 16 mm top diameter, 22.3 mm body diameter, 43 mm height, pack of three

  • Fits 3 mm filament with a 3 mm top hole diameter
  • Aluminium alloy construction dissipates heat from the hotend
  • M6 bottom thread secures the heatbreak on V6 J-Head extruders
  • Compact 22.3 x 43 mm profile suits Bowden setups
  • Pack of three heatsinks provides spares for multiple printers

3 mm V6 Heatbreak Heatsink

This aluminium-alloy heatsink fits 3 mm filament and M6-threaded V6 J-Head extruder hotends. Each piece measures 22.3 mm in diameter by 43 mm in height with a 16 mm top outer diameter. The silver finish suits Bowden and direct-drive configurations alike. Pack includes three units for spares or multi-extruder setups.

Upgrade from worn or mismatched heatbreaks

Replace a damaged original when filament jams or temperature drift appear at the cold zone. The jump is worth it if the existing heatsink no longer seats squarely on the heatbreak or its threads are stripped. Swapping restores consistent thermal separation between the hotend and the cold end.

Build integration needs

Requires a V6-compatible heatbreak with M6 threading and a 3 mm bore for the filament path. No fan or duct is included, so the printer must already supply active airflow across the 16 mm diameter fins. The compact 22.3 mm diameter profile frees carriage space for additional tooling or a second extruder.

Highlights

  • Fits 3 mm filament with a 3 mm top hole diameter
  • Aluminium alloy construction dissipates heat from the hotend
  • M6 bottom thread secures the heatbreak on V6 J-Head extruders
  • Compact 22.3 x 43 mm profile suits Bowden setups
  • Pack of three heatsinks provides spares for multiple printers

Specifications

BrandUnique Bargains

Questions about this item

Will the 16 mm top outer diameter clear my V6 J-Head extruder housing?

The heatsink measures 16 mm across the top and 22.3 mm at the base, so it fits the standard V6 J-Head envelope without modification.

What is the correct way to seat the M6 thread on the heatbreak, and where do people go wrong?

Screw the heatbreak into the M6 bottom thread until the 3 mm filament bore aligns, then lock it with the grub screw; the common error is leaving a gap that causes heat creep.

When should I replace these aluminium-alloy heatsinks?

Replace a heatsink if the fins are bent, the M6 threads are stripped, or the 3 mm bore shows wear that lets filament ride the wall.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.