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Product Code: G551SMS
Add a second mounting station for your 5-inch Garmin GPSMAP 521, 551 or 556 (among many other compatible models, see compatibility list below) chartplotter on your boat with this second mounting station.
The kit also includes a wiring harness to power your compatible device and ability to connect to an optional NMEA 0183 network, CANet device and transducer.
Garmin part number: 010-10930-00
Compatibility: Compatible with Garmin GPSMAP 520/520s, 521/521s, 525/525s, 526/526s, 530/530s, 531/531s, 535/535s, 536/536s, 540/540s, 541/541s, 545/545s, 550/550s, 551/551s, 546/546s, 556/556s.
Garmin GPSMAP 521, 551, 556 Second Mounting Station
Deliveries
We offer UK, Europe and Worldwide deliveries. We despatch orders at 4:00pm on Monday, Tuesday, Wednesday, Thursday and Friday. We need to receive your order on those days by 3:00pm. When possible we may despatch orders received after that time. No orders are despatched on Saturday, Sunday or Bank Holidays in England and Wales.
We offer FREE UK delivery on all orders of £50.00 or more, plus next working day and guaranteed Saturday delivery options. Click here for further info. All options also appear at the basket pages.
Add a second mounting station for your 5-inch Garmin GPSMAP 521, 551 or 556 chartplotter on your boat with this second mounting station. The kit also includes a wiring harness to power your compatible device and ability to connect to an optional NMEA 0183 network, CANet device and transducer.
If you'd like to add Garmin marine BlueCharts to your Garmin GPSMAP 521, 551 or 556 device you can do just that by buying and loading the latest Garmin BlueChart G3 and G3 Vision.
The charts come preloaded on microSD card together with a SD card adaptor. Simply insert the SD card into your Garmin GPSMAP 521, 551 or 556 and you are ready to take to sea with the latest nautical Garmin charts.
‣Mount your Garmin GPSMAP 521/551/556 directly on top of your boats or vehicles dashboard
‣Mount adjusts easily, swivel and tilt to get the best viewing angle
‣Includes a wiring harness to power your device
‣Includes ability to connect to a NMEA 0183 network, CANet device and transducer
‣Genuine Garmin Accessory
‣Garmin GPSMAP 521/551/556 swivel mount
‣Wiring harness and power/data cables
The genuine Garmin second mounting station is compatible with the following 5-inch Garmin GPSMAP chartplotters:
Garmin GPSMAP 520, 520s, 521, 521s, 525, 525s, 526, 526s, 530, 530s, 531, 531s, 535, 535s, 536, 536s, 540, 540s, 541, 541s, 545, 545s, 550, 550s, 551, 551s, 546, 546s, 556, 556s.
Why Buy from ActiveGPS?We are official authorised Garmin Internet Retailers, offering genuine Garmin products, accessories, and maps. All our stock is purchased directly from assigned Garmin UK distributors - we do not source from the grey market and never sell counterfeit products.
When you buy from ActiveGPS.co.uk, you can be confident that you’ll receive full Garmin support and the peace of mind that comes with purchasing authentic, reliable products.
This page was last updated on: 26th October 2026
