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Garmin GPSMAP 420, 450, 451 and Fishfinder 400C Swivel Mounting Bracket

Product Code: G451SB

Use the swivel mounting bracket to mount, swivel and tilt your 4-inch screen GPSMAP 420, 421, 450, 451 among other GPSMAP 400 series chartplotter models and the Fishfinder 400C to get the best viewing angle.

Garmin part number: 010-10920-00

Compatibility: Compatible with Garmin Fishfinder 400C, GPSMAP 420/420s, GPSMAP 421/421s, GPSMAP 430/430s, GPSMAP 431/431s, GPSMAP 440/440s, GPSMAP 441/441s, GPSMAP 450/450s, GPSMAP 451/451s.

Garmin GPSMAP 420, 450, 451 and Fishfinder 400C Swivel Mounting Bracket has been discontinued.

View Garmin GPSMAP Chartplotter Accessories.

Deliveries

We offer UK, Europe and Worldwide deliveries. We despatch orders at 4:30pm 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.

Garmin GPSMAP 420/451 and Fishfinder 400C Swivel Mounting Bracket

Use the swivel mounting bracket to mount, swivel and tilt your 4-inch screen GPSMAP 420, 421, 450, 451, 451s among other GPSMAP 400 series chartplotter models and the Fishfinder 400C to get the best viewing angle.

Optional Garmin BlueChart g3

If you'd like to add Garmin marine BlueCharts to your Garmin GPSMAP 420, 450 or 451 charplotter ONLY (not compatible with Fishfinder 400C) 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 420/420s, 450/450s or 451/451s and you are ready to take to sea with the latest nautical Garmin charts.

Key Features

‣Mount your Garmin GPSMAP 420/450/451 or Fishfinder 400C directly on top of your boats or vehicles dashboard
‣Mount adjusts easily, swivel and tilt to get the best viewing angle
‣Genuine Garmin Accessory

What's in the box?

‣Garmin GPSMAP 420/451 or Fishfinder 400C swivel mount.

What is the swivel bracket compatible with?

The genuine Garmin marine swivel mount is compatible with the following 4-inch Garmin marine devices:

Garmin Fishfinder 400C, GPSMAP 420, 420s, 421, 421s, 430, 430s, 431, 431s, 440, 440s, 441, 441s, 450, 450s, 451, 451s.

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: 2nd January 2026