Garmin
Garmin GT51M-TH Thru-Hull Transducer 12 pin
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010-12223-10
The Garmin GT51M-TH is a 12-pin stainless steel thru-hull transducer combining mid-band CHIRP traditional sonar with Garmin ClearVu and SideVu CHIRP scanning sonar. Ideal for coastal fishing, it includes a fairing block for hulls up to 25 degrees deadrise and a temperature sensor.
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Collection or delivery in 1-2 weeks
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Garmin GT51M-TH is an all-in-one 12-pin thru-hull transducer that combines mid-band CHIRP traditional sonar (85 to 165 kHz) with Garmin ClearVu and SideVu CHIRP scanning sonar (260 and 455 kHz). The 600 W mid-band channel gives strong depth performance to 1,800 ft in rough conditions, while the 500 W per element scanning sonar delivers picture-like detail below the boat (ClearVu to 1,000 ft) and wide structure coverage to the sides (SideVu to 750 ft). A fairing block, isolation plate and bushings are included so it can be flush-mounted on hulls of up to 25 degrees deadrise and on metal hulls, with at least one anti-rotation bolt required, plus a built-in fast-response water temperature sensor. It connects via a 12-pin sonar port to compatible Garmin chartplotters and the GCV 20 or GSD 25 sonar black box. For higher-deadrise hulls or twin-transducer SideVu, see the GT51M-THP pair.
PRODUCT DETAILS
- All-in-one sonar: mid-band CHIRP traditional plus Garmin ClearVu and SideVu CHIRP scanning
- Mid-band CHIRP traditional at 600 W to 1,800 ft for strong depth performance
- ClearVu and SideVu at 500 W per element; ClearVu to 1,000 ft, SideVu to 750 ft
- Stainless steel thru-hull with included fairing block for hull deadrise up to 25 degrees
- Built-in fast-response water temperature sensor
- 12-pin connection to compatible Garmin chartplotters and the GCV 20 or GSD 25 black box
- GT51M-TH 12-pin thru-hull transducer with stainless steel stem
- Fairing block
- Isolation plate and bushings
- Extension cable
- Mounting hardware (including anti-rotation bolts)
- Installation instructions
No exploded diagram available for this product.
No compatible transducers listed for this product.
No spares or accessories listed for this product.
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Sonar
| Sonar types | Traditional mid-band CHIRP plus Garmin ClearVu and Garmin SideVu (CHIRP) scanning sonar |
| Traditional frequency | Mid-band CHIRP 85 to 165 kHz |
| Traditional power | 600 W RMS |
| ClearVu / SideVu frequency | CHIRP 260 kHz (245-275 kHz) and 455 kHz (445-465 kHz) |
| ClearVu / SideVu power | 500 W RMS per element |
| Maximum depth | Traditional 1,800 ft; ClearVu 1,000 ft; SideVu 750 ft |
Beam
| Traditional beamwidth | 24 to 13 degrees |
| ClearVu / SideVu beamwidth | 2.0 x 51 degrees at 260 kHz; 1.4 x 29 degrees at 455 kHz |
Mounting
| Mount type | Thru-hull (single) with cuttable fairing block; supported deadrise 0 to 25 degrees |
| Fairing block | Fairing block included; maximum cut angle 25 degrees; a fairing block should be used where deadrise exceeds 5 degrees |
| Installation | Must be installed with one or more included anti-rotation bolts; metal hulls use the included isolation plate and bushings |
| Anti-fouling | Apply water-based anti-fouling paint every six months; never use ketone-based paint |
Physical
| Housing material | Stainless steel |
| Temperature sensor | Built-in fast-response water temperature sensor |
Connectivity
| Connector | 12-pin |
| Cable | 1.5 m (5 ft) transducer cable plus 9 m (30 ft) extension |
Compatibility
| Compatible devices | Connects via a 12-pin sonar port to compatible Garmin chartplotters and sonar black boxes including the STRIKER, ECHOMAP UHD2 and ECHOMAP Ultra 2 series, GPSMAP 8600xsv and 9000xsv series, GPSMAP 7x3/9x3/12x3/16x3 xsv series, and the GCV 20 and GSD 25 sonar black boxes (some combinations require an adapter cable). |
General
| In the box | GT51M-TH 12-pin transducer with stainless steel stem, fairing block, isolation plate and bushings, extension cable, mounting hardware and installation instructions |
No videos available for this product.
What sonar does the GT51M-TH provide?
It is an all-in-one transducer providing mid-band CHIRP traditional sonar (85 to 165 kHz, 600 W, to 1,800 ft) plus Garmin ClearVu and SideVu CHIRP scanning sonar at 260 and 455 kHz (500 W per element; ClearVu to 1,000 ft, SideVu to 750 ft).
How does the GT51M-TH differ from the GT41-TH?
Both are all-in-one thru-hull transducers with ClearVu and SideVu. The GT51M uses a mid-band CHIRP traditional element (85 to 165 kHz) reaching 1,800 ft, while the GT41 uses a 50/200 kHz traditional element reaching 1,500 ft. The GT51M suits coastal anglers wanting strong mid-band depth performance.
Does it come with a fairing block?
Yes. A fairing block, isolation plate and bushings are included, so it can be flush-mounted on hulls of up to 25 degrees deadrise and on metal hulls. The fairing block is shaped to the hull (maximum cut angle 25 degrees).
What do I need to display its sonar?
It uses a 12-pin connector and connects to compatible Garmin chartplotters and the GCV 20 or GSD 25 sonar black box; some combinations require an adapter cable.
