Choosing a transducer for a Garmin ECHOMAP Ultra 2 comes down to two questions: is it on Garmin's recommended list for your display, and does it plug straight in or need an adaptor cable? This guide pulls together Garmin's Recommended Transducer Guide for the ECHOMAP Ultra 2 range, display by display, so you can see at a glance which transducers are listed and where an adaptor is called for.
Source: Garmin's Recommended Transducer Guide (2026 edition, as published in our UK distributor's catalogue). Garmin revises its guidance from time to time, so please contact us with your exact display model and part number before ordering and we'll confirm the right transducer and any cable you need.
Garmin ECHOMAP Ultra 2 transducer compatibility
Each row is a display in the range. "Direct" transducers are listed without an adaptor; "adaptor required" transducers are listed with the adaptor cable Garmin specifies. Transducers not shown for a display aren't listed for it in Garmin's guide.
Transducer by transducer
| Transducer (part no.) | Catalogue type | HME product | ECHOMAP Ultra 2 |
|---|---|---|---|
| GT15M-IH (010-12402-00) | CHIRP Traditional | View product | Adaptor required: A2 |
| GT20-TM (010-01960-01) | CHIRP ClearVü/Traditional | View product | Adaptor required: A2 |
| GT21-TH (010-01962-10) | CHIRP ClearVü/Traditional | View product | Adaptor required: A2 |
| GT22HW-TM (010-12403-00) | CHIRP ClearVü/CHIRP Traditional | View product | Adaptor required: A2 |
| GT23M-TH (010-12404-10) | CHIRP ClearVü/CHIRP Traditional | View product | Adaptor required: A2 |
| GT24UHD-TM (010-12908-00) | CHIRP ClearVü/CHIRP Traditional | View product | Adaptor required: A2 |
| GT56UHD-TM (010-13073-00) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT56UHD-TH (010-02732-10) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT56UHD-THP (010-02732-11) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT51M-TM (010-01966-00) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT51M-TH (010-01966-10) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT51M-THP (010-01966-11) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
| GT52HW-TM (010-12405-00) | All-in-one CHIRP Traditional/ClearVü/SideVü | View product | Direct |
Adaptor cables: A2 is Garmin 8-pin Transducer to 12-pin Sounder Adapter Cable with XID (010-12122-10). See our A1 and A2 adaptor cable guide for every pairing.
Choosing between them
- The guide lists 13 transducers for the ECHOMAP Ultra 2 (shown as "ECHOMAP Ultra" in Garmin's guide).
- Listed as direct connections: GT56UHD-TM (010-13073-00), GT56UHD-TH (010-02732-10), GT56UHD-THP (010-02732-11), GT51M-TM (010-01966-00), GT51M-TH (010-01966-10), GT51M-THP (010-01966-11), GT52HW-TM (010-12405-00). These are the GT56UHD, GT51M and GT52HW all-in-one transducers.
- Listed with the A2 adaptor (010-12122-10): GT15M-IH (010-12402-00), GT20-TM (010-01960-01), GT21-TH (010-01962-10), GT22HW-TM (010-12403-00), GT23M-TH (010-12404-10), GT24UHD-TM (010-12908-00).
- If you want to avoid an extra cable, the all-in-one transducers are the ones listed without an adaptor. The Ultra 2 packs with a transducer come with a GT56UHD-TM, which the guide lists as a direct connection.
- The 4-pin GT20-TM (010-01960-00) isn't listed for the ECHOMAP Ultra 2.
We supply and advise on Garmin transducers and adaptor cables; we don't fit them. Installation should be carried out by a qualified marine installer or by you as the boat owner, following Garmin's installation instructions.
Frequently asked questions
Do I need an adaptor cable for my ECHOMAP Ultra 2?
Only for some transducers. Garmin's guide flags 6 of the listed transducers as needing the A2 adaptor (010-12122-10) on the ECHOMAP Ultra 2; the rest are listed as direct connections. The tables above show which is which.
What if my transducer isn't in the table?
If a transducer isn't shown against your display, it isn't on Garmin's recommended list for it. That doesn't always mean it won't work, but we won't recommend it without checking. Contact us with the display and transducer part numbers and we'll look into it.
Does every display in the range take the same transducers?
In Garmin's guide, yes within each family: every display in the ECHOMAP Ultra 2 family has the same list.
Will you fit the transducer for me?
We supply and advise on Garmin transducers and adaptor cables; we don't fit them. Installation should be carried out by a qualified marine installer or by you as the boat owner, following Garmin's installation instructions.
How do I make sure I order the right one?
Send us your display's exact model and part number (it's on the box or the label on the back of the unit) and how you plan to mount the transducer. We'll confirm the right transducer and any adaptor cable before you order.
Related guides and products
- STRIKER Vivid transducer guide
- ECHOMAP UHD2 transducer guide
- GPSMAP x3 xsv transducer guide
- A1 and A2 adaptor cables explained
- All Garmin transducers
- Garmin sonar accessories and spares
- ECHOMAP Ultra 2 102sv transducer reference
- ECHOMAP Ultra 2 102sv with GT56UHD-TM transducer reference
- ECHOMAP Ultra 2 122sv transducer reference
- ECHOMAP Ultra 2 122sv with GT56UHD-TM transducer reference
- ECHOMAP Ultra 2 162sv transducer reference
Source: Garmin's Recommended Transducer Guide (2026 edition, as published in our UK distributor's catalogue). Garmin revises its guidance from time to time, so please contact us with your exact display model and part number before ordering and we'll confirm the right transducer and any cable you need.
