# Stepper heatsink, 4040, MK7/MK8, gold

> Gold-colored aluminum heatsink, dimensions 40 x 40 x 11 mm, for cooling the stepper motor in direct extruder configurations. Compatible with 4040 fan and NEMA17 motors, fits MK7 and MK8 extruders. Helps maintain a stable temperature and reduces overheating risk during long prints.

- Page: https://sigmanortec.ro/en/stepper-heatsink-4040-mk7-mk8-gold
- Price: 6.44 RON
- Availability: In stock; 1-2 zile
- Reference: 33539 · EAN: 5946782510397
- Category: Mechatronics and IoT > Ventilator and Radiator
- Package (shipping data): 0.02 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:32 (Europe/Bucharest)

## Description

Gold aluminum heatsink for efficient cooling of the stepper motor in direct extruder configurations, compatible with 4040 fan and NEMA17 motors. Fits on MK7 and MK8 extruders, helps maintain stable temperature and reduces the risk of overheating in long prints. Dimensions 40 x 40 x 11 mm.
Radiator used especially for cooling the stepper motor in 3D printers, in "direct extruder" configurations.
The radiator fits a 4040 fan and a nema17 stepper motor.
Specifications:
Color: Gold
Material: Aluminum
Suitable for 3D printer extruder configurations: MK7 and MK8
Dimensions mm: 40 x 40 x 11