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home > Humminbird AD MTM Trolling Motor Adapter f/MEGA Transom Transducer > Humminbird AD MTM Trolling Motor Adapter f/MEGA Transom Transducer
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Humminbird AD MTM Trolling Motor Adapter f/MEGA Transom TransducerUpgrade your fishing setup by mounting your Humminbird MEGA transom transducer directly onto your trolling motor shaft. This specialized adapter transforms your existing high performance sonar into a forward facing powerhouse, delivering crystal clear imaging even as you glide across the water. Perfect for anglers chasing structure and fish in shallow waters, it keeps your transducer stable and submerged for uninterrupted MEGA Down Imaging and Side
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Upgrade your fishing setup by mounting your Humminbird MEGA transom transducer directly onto your trolling motor shaft. This specialized adapter transforms your existing high-performance sonar into a forward-facing powerhouse, delivering crystal-clear imaging even as you glide across the water. Perfect for anglers chasing structure and fish in shallow waters, it keeps your transducer stable and submerged for uninterrupted MEGA Down Imaging and Side Imaging views.

Key Features That Elevate Your On-Water Experience

  • Secure Trolling Motor Fit: Engineered to clamp firmly onto most popular trolling motor shafts, ensuring your transducer stays rock-solid during turns and waves.
  • Corrosion-Resistant Build: Crafted from durable marine-grade materials that withstand harsh freshwater and saltwater environments, season after season.
  • Non-High Wide Compatibility: Specifically designed for standard MEGA transom transducers, maximizing sonar performance without distortion.
  • Low-Profile Design: Minimizes drag and interference, keeping your motor's agility intact while optimizing transducer positioning for the best scan angles.

Complete Kit for Quick Setup

Everything you need arrives in one convenient package—no hunting for extra hardware.

  • Precision-machined adapter bracket
  • Two heavy-duty hose clamps for universal shaft compatibility
  • Stainless steel screws for long-lasting attachment

Seamless Integration with Your Gear

This adapter pairs effortlessly with Humminbird's lineup of MEGA-equipped units like SOLIX, APEX, and HELIX series. It fits trolling motors from leading brands with shafts ranging from 1.5 to 2.5 inches in diameter, making it a versatile add-on for your boat. Always double-check your transducer model to ensure it's the non-high wide variant for optimal results.

Step-by-Step Installation: From Box to Water in Minutes

Skip the guesswork with this straightforward process—designed for DIY anglers with basic tools.

  1. Power off your boat and electronics. Remove the transducer from its transom mount.
  2. Slide the adapter onto your trolling motor shaft at the ideal depth (typically 12-18 inches below the surface).
  3. Secure with the provided hose clamps, tightening evenly to prevent slippage.
  4. Attach the transducer to the adapter using the included screws—align it parallel to the waterline for peak performance.
  5. Route the cable neatly along the shaft with zip ties (not included) to avoid snags, then test your sonar on the water.

Pro Tip: Adjust the angle slightly forward for enhanced forward-facing capabilities during active presentations like jigging or trolling lures.

Why This Adapter Transforms Your Fishing Game

Moving your MEGA transducer to the trolling motor unlocks real-time, high-definition views of bottom structure, baitfish schools, and trophy targets right in front of your boat. Spot suspended walleye over reefs, track bass hugging weed edges, or navigate musky haunts with precision. It's a game-changer for tournament pros and weekend warriors alike, reducing the need for spot-on-spot repositioning and boosting your catch rates.

Keep It Performing Like New

  • Rinse with freshwater after every saltwater trip to prevent corrosion.
  • Inspect clamps and screws seasonally for wear—tighten as needed.
  • Store in a dry place during off-season to extend lifespan.
  • Avoid overtightening screws to protect the transducer housing.

California Proposition 65 Warning: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer, birth defects, or other reproductive harm.

Frequently Asked Questions

Does this adapter work with all Humminbird MEGA transducers?

It's optimized for non-high wide MEGA transom mount transducers. Confirm your model matches for the best fit and performance.

What size trolling motor shafts does it fit?

The adjustable hose clamps accommodate shafts from 1.5 to 2.5 inches, covering most Minn Kota, MotorGuide, and similar models.

Can I use this in saltwater?

Yes, the marine-grade construction resists corrosion, but rinse thoroughly after use to maintain longevity.

Will mounting on the trolling motor affect my sonar readings?

No, proper installation keeps the transducer stable and submerged, providing consistent MEGA imaging comparable to transom mounting.

Is professional installation required?

Not at all—basic tools like a screwdriver get it done in under 30 minutes for most users.

Does it interfere with trolling motor deployment?

The low-profile design ensures smooth stowing and deployment without snags.

AD MTM Trolling Motor Adapter for MEGA Transom Transducer

This hardware kit adapts our MEGA transom mount transducer for use on the trolling motor.

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.



From flash to LCD, from analog to digital, from DualBeam sonar to MEGA Imaging+, Humminbird has undergone tremendous changes in the past 50 years. Start with first-class sonar...
SKU: NVN-64748
MPN: 740159-1
UPC: 082324050305

Humminbird AD MTM Trolling Motor Adapter f/MEGA Transom Transducer

Item no : 20152272333
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