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Three silver aluminium heatsinks with 1.75 mm top holes and M6 threads, each 22.3 mm wide by 43 mm tall

Unique-Bargains

Unique-Bargains V6 Heatbreak Heatsink 1.75mm 3pcs

SKU CH-1NXP-MAP5X

Aluminium-alloy heatsinks for 1.75 mm filament, M6-threaded for V6 hotends, pack of three

  • Fits 1.75 mm filament for precise V6 hot-end compatibility
  • Aluminium-alloy construction transfers heat away from the melt zone
  • M6 bottom thread secures directly to V6 heatbreaks
  • Compact 22.3 × 43 mm profile suits Bowden and direct-drive setups
  • Pack of three heatsinks provides spares for multi-printer fleets

What this part is

These are three aluminium-alloy heatsinks sized for a V6 heatbreak with a 1.75 mm top hole and an M6 bottom thread. Each unit measures 22.3 mm in outer diameter and 43 mm overall height with a 16 mm top outer diameter. They are sold new in a pack of three.

Who this suits

Builders repairing or assembling a V6 J-Head extruder hotend that uses 1.75 mm filament and an M6-threaded heatbreak will find the correct dimensions here. Printers using a different heatbreak thread, a different filament diameter or a non-V6 hotend design cannot use these parts.

Critical fit specification

The 1.75 mm top hole diameter and M6 bottom thread size together determine whether the heatsink matches the heatbreak; both must match the printer's hotend exactly for the part to work.

Highlights

  • Fits 1.75 mm filament for precise V6 hot-end compatibility
  • Aluminium-alloy construction transfers heat away from the melt zone
  • M6 bottom thread secures directly to V6 heatbreaks
  • Compact 22.3 × 43 mm profile suits Bowden and direct-drive setups
  • Pack of three heatsinks provides spares for multi-printer fleets

Specifications

BrandUnique Bargains

Questions about this item

How do I install the V6 heatbreak heatsink and which step do people get wrong?

Thread the M6 base into the V6 J-Head extruder hotend, then seat the Bowden tube into the 1.75 mm top hole. The common mistake is cross-threading the M6 thread or leaving a gap between the tube and the heatbreak.

What maintenance or replacement will the aluminium-alloy heatsink need later?

The aluminium-alloy body is passive, so no scheduled replacement is required. Inspect the 16 mm outer-diameter fins for dust buildup and the M6 threads for galling if the hotend is removed repeatedly.

What limit appears first during a long print with 1.75 mm filament?

Heat-soak at the 43 mm tall heatsink is the first bottleneck; if the cooling fan cannot move enough air through the fins, the 1.75 mm filament path softens upstream and causes jams.

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