Humminbird In-Dash Flush Mount Kit for 700 Series HD Units

Humminbird IDMK 700E In-Dash Mount (700 Series HD)

740121-1
  • $46.99 CAD
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Compatibility:

✅ Compatible Humminbird Units
Fits the 700 Series "HD" and "Ethernet" models:
• 718 / 728 / 778c HD / 788ci HD
• 798ci HD SI (Side Imaging)
• 788ci HD DI (Down Imaging)
• 798ci SI (Non-HD)

❌ NOT Compatible
• HELIX 7 Series (Wider screen - Requires IDMK H7)
• HELIX 5 Series
• 500 Series (Smaller square screen)
• 800 / 900 / 1100 Series

The Factory Flush Finish

Restore the clean look of your console. The Humminbird IDMK 700E is the genuine mounting kit required to install a 700-Series head unit directly into the dashboard of your boat, eliminating the gimbal bracket for a sleek, low-profile appearance.

Secure Installation:

This kit includes the heavy-duty rear bracket and threaded rods that pull the unit tight against the dash from behind, ensuring a vibration-free fit even in rough water. It also includes a foam gasket to prevent water intrusion behind the dash.

📦 Product Specs:

  • Part Number: 740093-1 (IDMK 700E)
  • Material: Reinforced Polymer Bracket
  • Installation: Requires cutting dash (Template Included)
  • Includes: Bracket, Threaded Rods, Wing Nuts, Gasket, Template
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Frequently Asked Questions

Will this fit my new HELIX 7?

No. The HELIX 7 uses a "Widescreen" (16:9) aspect ratio. The 700 Series used a "Square" (4:3) aspect ratio. This bracket is too narrow for a HELIX 7. You need the IDMK H7 kit for the new units.

Does it come with the cutting template?

Yes. The kit includes a paper template that you tape to your dashboard. It shows you exactly where to drill the corner holes and where to cut the main opening for a perfect fit.

Can I use this to replace a broken gimbal mount?

This kit is specifically for In-Dash (Flush) mounting. It does not replace the U-shaped gimbal bracket that sits on top of the console. If you want to mount the unit on top of the dash, you need the GM 700 gimbal mount instead.