Lowrance

Lowrance GK-12 Knobs f/HDS Series - Set of 2

SKU: 39844 · UPC: 042194533360 · MPN: 124-56
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02 · Overview

Lowrance GK-12 Knobs f/HDS Series - Set of 2 — Product description

Enhance Your HDS Setup with Genuine Lowrance Gimbal Knobs

Secure your Lowrance HDS series multifunction display with these precision-engineered GK-12 knobs. Designed specifically for marine environments, this set of two mounting knobs ensures a rock-solid hold on your gimbal bracket, even during rough waters or high-speed runs. Boaters and anglers rely on HDS units for crystal-clear sonar charts, GPS navigation, and StructureScan imaging—don't let loose knobs compromise your view.

Unlike generic replacements that wear out quickly from saltwater exposure, these authentic Lowrance parts maintain a tight grip without stripping threads or rattling loose. Perfect for quick upgrades or spares on your vessel.

Universal Fit for HDS Series Displays

  • Compatible with all HDS models, from compact HDS-5 to full-featured HDS-16 LIVE and Carbon variants
  • Works seamlessly with the GB-19 gimbal bracket (often included as standard equipment)
  • Ideal for flush-mount conversions or swivel adjustments in tight console spaces

Whether you're running an older HDS Gen2 or the latest HDS PRO, these knobs slide right into place, restoring factory-fresh stability to your setup.

Simple Installation for Any Skill Level

Swapping out worn knobs takes minutes—no special tools required. Here's a step-by-step guide to get you back on the water:

  1. Power down your HDS unit and loosen the old knobs by hand or with a gentle twist.
  2. Align the new GK-12 knobs with the gimbal bracket threads.
  3. Tighten snugly by hand until secure—avoid over-tightening to prevent bracket damage.
  4. Test swivel motion and lock it in your preferred viewing angle.

Pro tip: Apply a light coat of marine grease to threads for smoother operation and corrosion resistance in saltwater conditions.

Built to Last in Harsh Marine Conditions

Crafted from durable, UV-resistant materials, these knobs withstand constant sun, spray, and vibration. Common issues like cracking plastic or stripped screws vanish with genuine replacements. Keep your HDS pivot smooth for effortless adjustments while trolling for bass or navigating coastal waters.

Regular checks during routine boat maintenance prevent bigger problems—tighten knobs before every outing to ensure reliable performance from your investment in Lowrance technology.

Frequently Asked Questions

Are the Lowrance GK-12 knobs compatible with all HDS series models?

Yes, this set fits every HDS model, including Gen2, Gen3, LIVE, Carbon, and PRO series, ensuring a perfect match for your multifunction display.

How many knobs are included in the GK-12 set?

The set includes two knobs, providing everything needed for one gimbal bracket installation.

Do I need tools to install these HDS gimbal knobs?

No tools are necessary—installation is straightforward by hand, though pliers can help if old knobs are seized.

Are these knobs the same as those with the GB-19 bracket?

Exactly—the GK-12 set matches the OEM knobs bundled with the GB-19 gimbal bracket for Lowrance HDS units.

Can these knobs handle saltwater exposure?

Absolutely, constructed from corrosion-resistant materials, they're built for ongoing marine use without degrading.

What if my HDS knobs are stripped or broken?

These replacements restore secure mounting; if the bracket threads are damaged, consider inspecting the full assembly for wear.

Will these affect my HDS display's swivel function?

No, they enhance smooth pivoting while providing a firm lock in any position for optimal screen visibility.

Gimbal Knob Set for all HDS units. Included with purchase of GB-19 gimbal bracket.


This item is brand new, unopened and sealed in its original factory packaging. -Universal joint knob set, suitable for all HDS devices. It is included with the purchase of GB-19 universal bracket.
SKU: NVN-39844
MPN: 124-56
UPC: 042194533360
03 · The numbers

Technical specifications

BrandLowrance
ModelLowrance GK-12 Knobs f/HDS Series - Set of 2
SKU / MFR#39844

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