20 Foot Marine Network Cable for Garmin GPSMAP, Fish Finder, Radar, GMR, GMS 10 (RJ45)
Quick take
This 20-foot RJ45 marine Ethernet cable is built to replace Garmin part 010-10551-00 and connect compatible Garmin marine devices for networked sharing of data like waypoints, sonar, maps, and settings. It is a plug-and-play option if you need the right length and the correct Garmin port compatibility. The main buying caveat is that it is not meant for Garmin “threaded or locking” style ports.
Pros and cons
Pros
- 20-foot RJ45 male-to-male cable length for flexible routing between marine units
- Includes installation add-ons such as screw collars, a hole plug, and a waterproof cap (plus a replacement part number match)
- Designed with seawater resistance, corrosion resistance, and waterproofing for harsh marine conditions
- Wide compatibility list covering ECHOMAP (Plus/UHD/Ultra), GPSMAP, GMR radar, and GMS 10 (when your port style matches)
Cons
- Not compatible with certain Garmin threaded or locking port types (check your existing connector style first)
- Buyer-review evidence is limited, so expectations should focus on fit and installation, not performance claims beyond being a network cable
What buyers think
Buyer feedback centers on basic functionality and install fit. Multiple verified buyers reported that the cable worked as expected and was an appropriate length for their setup. Reviews also indicate that installation is generally straightforward when the connector design matches the Garmin device. Overall, buyer-review evidence is limited in volume, but the available comments point to reliable connectivity when paired with the right port style.
What this cable is for
This is a marine Ethernet (RJ45) cable meant to link two Garmin network-compatible devices using a direct cable connection. When your system supports Garmin networking, it can be used so units can share information such as waypoints, sonar data, maps, and control settings. The 20-foot (6 meter) length is geared toward typical in-boat routing between helm stations, radar units, and chartplotter displays.
Compatibility and port-fit are the real decision factors
Before buying, confirm two things: (1) you are replacing Garmin part 010-10551-00, and (2) your Garmin port type matches this cable’s connector style. This cable uses standard RJ45 male-to-male ends and is not intended for threaded or locking Garmin ports (for example, LiveScope-style configurations). If your existing network cable uses a standard RJ45 style connection, this is more likely to drop into place.
It is listed as compatible with many Garmin series, including ECHOMAP Plus, ECHOMAP UHD, ECHOMAP Ultra, GMR radar models, GMS 10 network port expander, and numerous GPSMAP models (including extended model families). The broad compatibility list is helpful, but it is still worth double-checking your exact head unit and accessory model against the supported set, then confirming your port style.
Installation and included parts
The overall setup is designed to be plug-and-play. You route the cable, connect the RJ45 male ends, and use the provided sealing and mounting pieces for a more weather-resistant install. The package includes a waterproof cap, screw collars, a hole plug, and the cable itself, which can reduce the odds of missing a small but important accessory during installation.
If you are used to waterproof sealing with O-rings, treat the first install as a “fit and seat” step. Some buyers note the moisture-sealing O-ring can shift if it is not positioned correctly, but it can be adjusted during setup.
Pros and cons for different buyers
Best for
- Garmin owners who specifically need a 20-foot RJ45 marine network cable and are replacing 010-10551-00
- Boat setups where you need a longer cable run between chartplotter, radar, and/or network expander
- Buyers prioritizing a weather-resistant, corrosion-resistant cable for harsh marine use
Who should avoid it
- Anyone whose Garmin installation uses threaded or locking style ports, since this cable is not intended for those connector types
- Buyers who need guaranteed fit across every Garmin accessory variation without verifying connector style and model compatibility
Is it worth it?
It is a solid choice if you match it to the correct Garmin networking port style and need the specified length for your layout. The combination of RJ45 male-to-male compatibility, marine-oriented protection, and included sealing installation parts makes it practical for real boat installs. If your setup involves a different Garmin connector type than a standard RJ45 network port, you may need another solution, because the port-style limitation is the main potential mismatch.
FAQs
Does this marine network cable work with threaded or locking Garmin ports?
No. It is intended for standard RJ45 marine network connections and is not compatible with Garmin threaded or locking port types.
What is this cable replacing?
It is listed as a replacement for Garmin part number 010-10551-00.
What connections does it use?
It uses RJ45 male-to-male Ethernet connectors.
What Garmin devices is it compatible with?
It is listed as compatible with a wide range of Garmin marine series, including ECHOMAP Plus, ECHOMAP UHD, ECHOMAP Ultra, GMR radar models, GMS 10 network port expander, and many GPSMAP models. You should still verify your exact model and port style.
How difficult is installation?
It is designed for plug-and-play installation. The kit includes a waterproof cap and other small sealing or install parts, which helps during setup. If there is an O-ring used for moisture sealing, take care to seat it properly the first time.
Why do the included parts matter?
Marine installs are exposed to moisture and corrosion risk. The included waterproof cap, screw collars, and hole plug support a more protected connection in harsh environments.
Specifications
| Product Title | 20 Foot Marine Network Cable for Garmin GPSMAP, Fish Finder, Radar, GMR, GMS 10 - RJ45 Male to Male Ethernet Cable for Garmin Navigation, ECHOMAP UHD/Ultra, GCV, GSD, and More Replace for 010-10551-00 |
|---|---|
| Category | Electronics > Car & Vehicle Electronics > Marine Electronics > Marine GPS Accessories |
| Brand | E-cowlboy |
| Manufacturer | E-cowlboy |
| Model Name | 20 Foot Marine Network Cable |
| Connector Type | RJ45 |
| Cable Type | RJ45 |
| Compatible Devices | ECHOMAP Plus: 72cv, 72sv, 73cv, 73cv Ice Fishing Bundle, 73sv, 74cv, 74sv, 75cv, 75sv, 77cv, 77sv, 92sv, 93sv, 94sv, 95sv, 97sv, UHD: Ultra: 102sv, 106sv, 122sv, 126sv, GMR: 1224 xHD2, 1226 18 HD, HD+, Radome, xHD, 20, 21, 24, 24 HDc, 2524 2526 40, 404 Open Array, 404/406 Radar Pedestal, 406 xHD Array and 41, 424 426 606 624 626 GMR Fantom: 18, 4, 6, GMS: 10 Network Port Expander, GPSMAP: 1022, 1022xsv, 1042xsv, 1222, 1222 Plus, Touch, 1222xsv Plus 1242 1242xsv, 1242xsv 3006C, 3010C, 3205, 3206, 3210, 4008, 4010, 4012, 4208, 4210, 4212, 5008, 5012, 5015, 5208, 5212, 5215, 6208, 6212, 7212, 7215, 722, 722 722xs, 722xs 7407, 7407xsv, 7408, 7408xsv, 7410, 7410xsv, 7412, 7412xsv, 7416, 7416xsv, 742, 742 742xs, 742xs 7607, 7607xsv, 7608, 7608xsv, 7610, 7610xsv, 7612, 7612xsv, 7616, 7616xsv, 8208 MFD, 8212 8215 8410, 8410xsv, 8412, 8412xsv, 8416, 8416xsv, 8417 8422 8424 8500 Black Box, 8530 8610, 8610xsv, 8612, 8612xsv, 8616, 8616xsv, 8617 MFD |
| Other Special Features of the Product | Data Transfer |
| Compatible Phone Models | No Compatible Phone Models |
| Ethernet Cable Category | Cat 5e |
| Connector Gender | Male-to-Male |
| Number of Pins | 8 |
| Recommended Uses For Product | Data Transmission |
| Indoor Outdoor Usage | Outdoor |
| Brand Name | E-cowlboy |
| Model | 010-10551-00 |
| Part Number | 010-10551-00 |
| Included Components | 20 Foot Marine Network Cable |
| Unit Count | 20.0 Feet |
| Number of Items | 1 |
| Special Feature | Data Transfer |
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