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Top 9June 2025

Best Garmin Fishfinder Extension Mount

We made a list of the top 9 Garmin Fishfinder Extension Mount based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

OUBULU Fish Finder Mount with Heavy Duty Swing Arm for Fishfinders & Chartplotters Marine Electronic with 5" to 12" Screens, Compatible with Garmin Lowrance and More

OUBULU Fish Finder Mount with Heavy Duty Swing Arm for Fishfinders & Chartplotters Marine Electronic with 5" to 12" Screens, Compatible with Garmin Lowrance and More

✓【Hold Up to 12'' Screens】Built from solid aluminum, this mount supports 110 lbs. static and 22 lbs. dynamic, providing exceptional strength and stability, even in rough waters. Securely holds large screens up to 12 inches without compromise.
✓【Built for Harsh Marine Environments】Crafted from powder-coated marine-grade aluminum with stainless steel hardware, it is rigorously salt spray tested to withstand high saltwater corrosion, ensuring long-lasting durability.
✓【Easy to Install】The heavy-duty mounting base can be installed on any flat surface, such as boat dashboards and kayak decks. The pre-drilled rectangle plate supports various marine electronics, including GPS, CB radios, ham radios, and gimbal brackets. Includes 316 marine-grade stainless steel machine screws, lock nuts, and sheet metal screws for secure installation.
✓【Full 360° Rotation】Designed with two pivot points for smooth 360-degree rotation, offering flexible positioning and an optimized viewing angle for your fishfinder or GPS display.
✓【Wide Device Compatibility】Compatible with leading brands, including: Garmin: ECHOMAP UHD, UHD2, Ultra, GPSMAP, Striker Plus, Striker Vivid, and more. Lowrance: HDS Carbon, HDS LIVE, HDS PRO, Hook Reveal, Elite FS, and others.

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WINDFRD Aluminum Fish Finder Mount with 1.5" / C Size Ball, Heavy Duty 9.1" Long Arm Depth Finder Mount for Boat, High Salt Water Resistant, Compatible with Garmin, Lowrance and More

WINDFRD Aluminum Fish Finder Mount with 1.5" / C Size Ball, Heavy Duty 9.1" Long Arm Depth Finder Mount for Boat, High Salt Water Resistant, Compatible with Garmin, Lowrance and More

✓Designed for High Salt Marine Environment - Constructed of Powder-Coated Marine-Grade Aluminum and Stainless Steel Hardware. The mount has been Salt Spray Tested for thousands of hours (including stainless steel bolts and springs) to resist high salt water corrosion. Cast in one piece of aluminum rather than screwed together, it remains strong and durable even under the impact of waves.
✓Heavy Duty - The weight capacity of the marine electronic mount can be up to 15.5 lbs at rest and 4 lbs at motion. The rectangle plate contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. The AMPS hole pattern is designed to install directly in a boat, kayak or on any flat surface (Complimentary 4 sets of 316 marine grade stainless steel machine screws, lock nuts and sheet metal screws).
✓Universal Design - Includes a C size 9.1" length 1.5" double socket arm and a complete flat surface, drill-down mounting solution; The ball and socket technology allows for near-infinite adjustability. Perfectly fits 1.5" / C size / 38 mm ball systems, Compatible with RAM Mounts, Arkon, iBolt and others.
✓Compatible with Garmin: GPSMAP 722, GPSMAP 722xs, GPSMAP 723, GPSMAP, 723xsv, GPSMAP 742, GPSMAP 742xs, GPSMAP 743, GPSMAP 743xsv, Striker Plus 5cv, Striker Vivid 5cv, Striker Plus 7cv, Striker Plus 7sv, Striker Vivid 7cv, Striker Vivid 7sv, ECHOMAP Plus 72cv, ECHOMAP Plus 73cv, ECHOMAP Plus 74cv, ECHOMAP Plus 75cv, ECHOMAP Plus 77cv, ECHOMAP UHD 93sv, ECHOMAP UHD2 5", ECHOMAP UHD2 7", other Fishfinders and GPS Chartplotters.
✓Compatible with Lowrance: HDS Carbon 7, HDS LIVE 7, Hook Reveal 7 Series, Hook Reveal 9 Series, Elite FS 7, Elite FS 9, other Fishfinders and GPS Chartplotters. Compatible with Humminbird and Raymarine: Most Fishfinders and GPS Chartplotters (NOT compatible with: the Humminbird Helix 5, 7, 8, 9, 10, 12, 15, the Solix 10).

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VAZESWIN Aluminum Alloy Fish Finder Mount with C Size 1.5" Ball Rectangle Plate & Round Base, 9.1" Long Arm Marine Electronic Mount Compatible with Garmin, Lowrance, Humminbird, Raymarine and More

VAZESWIN Aluminum Alloy Fish Finder Mount with C Size 1.5" Ball Rectangle Plate & Round Base, 9.1" Long Arm Marine Electronic Mount Compatible with Garmin, Lowrance, Humminbird, Raymarine and More

✓Package Includes: The marine electronic mount consists of a 2.4" diameter round base, a 9.1" long double socket arm and a 6.25" x 2" marine electronic rectangular plate
✓Round Base: The round base includes a C size 1.5" TPU ball and contains pre-drilled holes, including the universal AMPS hole pattern
✓Long Arm: The long double socket arm has a total length of 9.1"(23 cm), compatible with RAM Mounts C size 1.5" Ball components
✓Fish Finder Mounting Plate: The rectangle plate includes a C size 1.5" TPU ball and contains a variety of pre-drilled holes that are compatible with several marine electronic devices, including fish finders and chartplotters
✓Sturdy & Durable: The round base & rectangle plate made of 6061-T6 aluminum alloy material with CNC machining and iii grade hard anodized surface. The long double socket arm made of powder-coated, 6061-T6 aluminum alloy for durability and reliability in the most demanding marine environments
✓Compatible with Garmin: ECHOMAP Plus 72cv 73cv, 74cv, 75cv 77cv; GPSMAP 722, 722xs, 742, 742xs; Striker Plus 5cv, 7cv, 7sv, and other Fish finders and GPS Chartplotters
✓Compatible with Lowrance: HDS Carbon 7, HDS LIVE 7, Hook Reveal 7 Series, Hook Reveal 9 Serie, and other Fish finders and GPS Chartplotters
✓Partial Compatibility: Compatible with Humminbird & Raymarine Most Fish Finders, GPS Chartplotters. (Please Note: Not compatible with the Humminbird Helix 5, Helix 7, Helix 8, Helix 9, Helix 10, Helix 12, Helix 15 and Solix 10)

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VAUBORTTI 1" Ball Mount for Garmin Striker 4,Aluminum Extension Arm with AMPS Round Plate – Fish Finder, ELD Mount – Compatible with RAM B Size Kit – T-Bolt Track System

VAUBORTTI 1" Ball Mount for Garmin Striker 4,Aluminum Extension Arm with AMPS Round Plate – Fish Finder, ELD Mount – Compatible with RAM B Size Kit – T-Bolt Track System

✓Aluminum Alloy Material: Crafted with 90% aluminum alloy through high-temperature die casting, surface-coated with polyethylene powder, and featuring a solid base formed by integral die casting to ensure durability and prevent cracking
✓Extended Arm: With an extended arm length of 10.3 inches, this mount allows fish finders, Tablets and similar devices to be positioned closer to eye level. Adjustments via four rotation points enable optimal viewing angles
✓T-Bolt Attachment: Equipped with a 1-inch ball T-bolt attachment, this mount is versatile, suitable for mounting on dashboards, boat rails, and also serves as a backup camera monitor bracket
✓Versatile Application: Suitable for Garmin Striker 4 fish finders, and also as a phone or tablet holder

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5% Discount

Heavy Duty Aluminum Alloy Fish Finder Mount with 1.5"/ C Size Ball, Medium Arm Marine Electronics Mount for Boat Compatible with Garmin, Lowrance, Humminbird,and More

Heavy Duty Aluminum Alloy Fish Finder Mount with 1.5"/ C Size Ball, Medium Arm Marine Electronics Mount for Boat Compatible with Garmin, Lowrance, Humminbird,and More

✓【C Size Adjustable Mount】The fish finder mount consists of a C size 1.5" double socket arm, a round base, and a rectangle base.Ball-and-socket technology provides 360-degree adjustment for your device, allowing you to find the best viewing angle and provide powerful assistance for your marine navigation
✓【Reliable Performance】No need to worry about your marine electronics equipment falling support your marine electronics in most demanding marine environments. Replace your old or broken fish finder mount
✓【Superior Quality】Crafted from premium-grade aluminum alloy and stainless steel, this marine electronics mount embodies maximum durability, high precision, and exceptional resistance to corrosion and rust. Provides capable of withstanding harsh marine environments, corrosion, and impacts.
✓【Suitable for Garmin】For GPSMAP 722, 722xs, 723, 723xsv, 742, 742xs, 743, 743xsv. For ECHOMAP Plus 72cv, 73cv, 74cv, 75cv, 77cv. For Striker Plus 5cv, 7cv, 7sv. For ECHOMAP UHD 93sv, ECHOMAP UHD2 5”, ECHOMAP UHD2 7”. For Striker Vivid 5cv, 7cv, 7sv.
✓【Suitable for Lowrance】For Hook Reveal 7 Series, Hook Reveal 9 Series, HDS Carbon 7, HDS LIVE 7, Elite FS 7, Elite FS 9
✓【Suitable for Humminbird and Raymarine】: Compatible with most fishfinders and GPS Chartplotters (NOT compatible with Humminbird Helix 5, 7, 8, 9, 10, 12, 15, Solix 10).

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RAM MOUNTS Universal Marine Electronic Mount RAM-D-115-C with Short Arm Compatible with 9" to 12" Fishfinder Gimbal Brackets

RAM MOUNTS Universal Marine Electronic Mount RAM-D-115-C with Short Arm Compatible with 9" to 12" Fishfinder Gimbal Brackets

✓Complete flat surface, drill-down mounting solution with short length D size socket arm compatible with 9"-12" fishfinder gimbal brackets
✓RAM Mounts ball and socket technology allows for near-infinite adjustability
✓Made of Powder-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments
✓Backed by a lifetime warranty

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9% Discount

Aluminum Fish Finder Mount with 1.5'' Ball, 14.76'' Dual Rod Extended Arm for Longer Lengths, Marine Electronic Mount for Garmin, Lowrance, Humminbird, Raymarine,Compatible with RAM C-Size Kit

Aluminum Fish Finder Mount with 1.5'' Ball, 14.76'' Dual Rod Extended Arm for Longer Lengths, Marine Electronic Mount for Garmin, Lowrance, Humminbird, Raymarine,Compatible with RAM C-Size Kit

✓Aluminum Alloy Body – Made from marine-grade aluminum alloy, high-temperature die-cast in one piece for superior strength and durability. The surface is electrostatically powder-coated and baked at high temperatures, providing exceptional corrosion resistance and long-term stability in harsh marine environments.
✓Extended Adjustable Arm – 14.76" Total Length – The 14.76-inch full-length mount provides a wide range of adjustments, allowing you to position your electronic device closer to your line of sight. This reduces the need to look down while operating, enhancing comfort and convenience. The flexible adjustability ensures an optimal viewing angle for clearer navigation and fish detection.
✓Oversized Wingnut for Easy Adjustments – Designed for an improved user experience, the larger and wider wingnut provides a better grip compared to traditional knobs. Even in wet conditions or while wearing gloves, you can easily tighten or loosen the mount. The upgraded design ensures smoother, more stable adjustments, keeping your device securely locked in place
✓Durable TPU Ball – The 1.5-inch TPU ball is precision-molded using high-pressure injection technology, making it tougher and more resilient than regular rubber balls. It maintains its shape under pressure, ensuring long-lasting, firm support. The anti-slip surface keeps your device securely mounted even in rough waters. Its high tear resistance and weatherproof properties protect against aging and damage, making it ideal for extreme marine conditions.
✓Universal Compatibility – The pre-drilled rectangular mounting plate supports multiple hole patterns, making it compatible with a variety of fish finders, marine GPS units, CB radios, ham radios, and universal mounts. The AMPS hole pattern allows direct installation on boats, kayaks, or any flat surface. It is widely compatible with RAM Mounts, Arkon, iBolt, and other 1.5-inch / C-size / 38mm adapter and mounting systems.
✓Compatible with Garmin: ECHOMAP CHIRP:72, 73, 74, 75, 92, 93, 94, 95, ECHOMAP Plus:7",9", ECHOMAP UHD: 6",7", 9", ECHOMAP UHD2: 5", 7", 9", GPSMAP:722, 722xs, 742, 742xs, GPSMAP 8", GPSMAP 9", Striker 5, Striker 7, Striker Plus 5cv,7cv, 7sv,9sv, Striker Vivid 5cv,7 Series,9sv
✓Compatible with Lowrance: Eagle 7,9,ELITE FS 7,9, Elite-7 Series, HDS Carbon 7, HDS LIVE 7, 9, HDS, Hook Reveal, HOOK-7, HOOK-9, HOOK2-7 Series, HOOK2-9

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8% Discount

Kewirya Fish Finder & Ball Mount with Aluminum Long Arm Extension, AMPS Round Plate for GPS/Boats/Vehicle, T-Bolt Attachment for Track Systems & Backup Cameras, B Compatible with RAM

Kewirya Fish Finder & Ball Mount with Aluminum Long Arm Extension, AMPS Round Plate for GPS/Boats/Vehicle, T-Bolt Attachment for Track Systems & Backup Cameras, B Compatible with RAM

✓Heavy-Duty AMPS Compatibility: 2.36" diameter bases with 1" B-size TPU balls feature pre-drilled AMPS patterns, compatible with RAM Mounts B size components. Ideal for mounting fish finders, GPS chartplotters, and other devices. ⚠️ (IMPORTANT COMPATIBILITY NOTE: lease carefully measure your device's mounting hole spacing before purchasing. Not compatible with Garmin Striker 4cv (requires 2.24"/5.7cm spacing).
✓Flexible 1 Inch Ball Mount System: Features a 10.3-inch aluminum extension arm with two 1-inch balls, offering versatile rotation for optimal viewing. This industrial-grade double ball mount ensures firm connections for your GPS or fish finder.
✓Versatile T-Bolt Attachment: Includes a 1-inch ball T-bolt attachment, making it suitable for dashboard mounts, boat rails, and as a backup camera monitor bracket. Perfect for vehicle and marine applications.
✓Marine-Grade Fish Finder Mount: Crafted from high-temperature die-cast aluminum alloy with powder coating, this GPS mount for car and boat withstands high salt environments. Ideal for boats and rigorous marine use.
✓Multi-Purpose Arm Fish Mount: Suitable for marine electronics, phones, and tablets in various vehicles including semi-trucks, cars, boats, kayaks, and off-road vehicles. Compatible with major brands like Garmin, Lowrance, Humminbird, and Raymarine.

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1.5" / C Size Ball Aluminum Fish Finder Mount with Extension(18.3") Arm, Marine Electronic/Depth Finder Mount for Boat, 360° Rotation, Compatible with Garmin, Lowrance, Humminbird and More

1.5" / C Size Ball Aluminum Fish Finder Mount with Extension(18.3") Arm, Marine Electronic/Depth Finder Mount for Boat, 360° Rotation, Compatible with Garmin, Lowrance, Humminbird and More

✓Sturdy and Reliable - This marine electronic mount made of extra-long arms is a valuable alternative to multiple ball/clamp connectors joined in line. Constructed of powder-coated marine-grade aluminum, corrosion-resistant composite materials to ensure strength while reducing the increased leverage of longer arms. Two ball joint adjustments provide more adjustment direction and options.
✓Designed for High Salt Marine Environment - The mount has been Salt Spray Tested for thousands of hours (including stainless steel bolts and springs) to resist high salt water corrosion. Cast in one piece of aluminum rather than screwed together, it remains strong and durable even under the impact of waves.
✓Superior Compatibility - The rectangle plate contains different combinations of pre-drilled holes to match many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. The AMPS hole pattern is designed to install directly in a boat, kayak or on any flat surface (Complimentary 4 sets of 316 marine grade stainless steel machine screws, lock nuts and sheet metal screws).
✓Universal Design - Includes a C size 18.3" length double socket arm, a 6.23" x 2" universal marine electronic devices mounting plate and a 2.4" diameter AMPS hole pattern round base. The ball and socket technology allows for near-infinite adjustability. Perfectly fits 1.5 inches / C size / 38 mm adapters and arms, Compatible with RAM Mounts, Arkon, iBolt and others.
✓Compatible with Garmin: ECHOMAP CHIRP 72, 73, 74, 75, ECHOMAP CHIRP 92, 93, 94, 95, ECHOMAP Plus 7", ECHOMAP Plus 9", ECHOMAP UHD 6", ECHOMAP UHD 7", ECHOMAP UHD 9", ECHOMAP UHD2 5", ECHOMAP UHD2 7", ECHOMAP UHD2 9", GPSMAP 7" Series, GPSMAP 8" Series, GPSMAP 9" Series, Striker 5, Striker 7, Striker Plus 5cv, Striker Plus 7 Series, Striker Plus 9sv, Striker Vivid 5cv, Striker Vivid 7 Series, Striker Vivid 9sv, other Fishfinders and GPS Chartplotters.
✓Compatible with Lowrance: Eagle 7, Eagle9, ELITE FS 7, ELITE FS 9, Elite-7 Series, HDS Carbon 7, HDS LIVE 7, HDS LIVE 9, HDS PRO 9, HDS-5 Series, HDS-7 Series, Hook Reveal 7, Hook Reveal 9, HOOK-7, HOOK-9, HOOK2-7 Series, HOOK2-9, other Fishfinders and GPS Chartplotters.
✓Compatible with Humminbird: Helix 8, 9, other Fishfinders and GPS Chartplotters (NOT compatible with: the Humminbird Helix 5, 7, 800 & 900 & lon & Onix & PiranhaMax Series)
✓Note: For best results, we recommend using this stand with screens up to 9 inches. Larger screens may not be properly supported.

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