Humminbird HELIX 8 CHIRP MEGA SI+ GPS G3N with Navionics+ Aus/NZ

WAS $2,199.00 now only $1,899.00
Sup. No.
- +
Add to Wish List
SAVE $300.00

The HELIX 8 CHIRP MEGA SI+ GPS G3N features an 8″ display, MEGA Side Imaging+, MEGA Down Imaging+ and Dual Spectrum CHIRP Sonar. 

Includes GPS mapping, built-in Bluetooth, Ethernet networking capabilities, AutoChart Live with depth, vegetation and bottom hardness mapping. 

Top it all off with Humminbird Basemap built-in.


  • MEGA Side Imaging+
  • MEGA Down Imaging+
  • Digital Sonar
  • Dual Spectrum CHIRP
  • SwitchFire
  • 10Hz Internal GPS
  • Built-in Base Map
  • Navionics+ AUS/NZ Included
  • Networking


MEGA Side Imaging

  • 455 kHz: 405-505 kHz – 800 ft (244 m) Side-to-Side
  • 800 kHz: 780-840 kHz – 250 ft (76 m) Side-to-Side
  • MEGA: 1050-1175 kHz – 400 ft (122 m) Side-to-Side

MEGA Down Imaging+

  • 455 kHz: 435-535 kHz – 400 ft (122 m) Depth
  • 800 kHz: 800-860 kHz – 125 ft (38 m) Depth
  • MEGA: 1100-1200 kHz – 200 ft (61 m) Depth

Dual Spectrum CHIRP with SwitchFire®

  • 1200 ft (366 m) Depth
  • 3500 ft (1067 m) Depth*
  • Full Mode: 150-220 kHz
  • Narrow Mode: 180-240 kHz @ 25°
  • Wide Mode: 140-200 kHz @ 42°


  • Built-In Mapping: Humminbird Basemap/AutoChart Live


Shipping rates are automatically calculated based on live quotes supplied by our shipping partners. The quote takes into consideration, the bulk of your cart, where you want it delivered and if you want express or standard shipping.

Get a shipping rate estimate by adding items to your online cart. Go to the cart by clicking on the shopping cart icon located at the top right of the page. Then enter your shipping destination information into the "Estimate Shipping and Tax" section of the shopping cart summary.

International Shipping
We are currently unable to deliver online orders outside of Australia.

If you are located outside of Australia and wish to place an order offline. Please contact our Special Orders Delivery department or send us an enquiry via the orange help bubble located at the bottom right of this page.



Online purchases can be returned/exchanged within 30 days. Some exclusions do apply.

Visit our Returns Policy page for details on how you can return an item.