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B175 Transducer

Low-profile tilted through-hull single-band 1kW CHIRP fishfinder transducer.

The B175 is available in the Low, Medium or High bands, or in a High-band version with widebeam. All versions are available with zero, 12 deg or 20 deg tilt.


Type CHIRP single-band fishfinder transducer
Low BandFrequency range 40-60 kHz / Beam width 32-21°
Medium BandFrequency range 85-135 kHz / Beam width 16-11°
High BandFrequency range 130-210 kHz / Beam width 10-6°
High Wide BandFrequency range 150-250 kHz / Beam width 25°
Power Rating1000 watts
Mounting Low-profile through-hull
Housing Bronze
Hull Aperture3.75" (95mm)
Usable Shaft Length2.80" (71mm)
Cable Length 10 meters
Mix and Match
Temperature Sensor
Speed Sensor Χ
Retractable Insert Χ
Status In production
Reference Page View the B175 page on the Airmar website


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Base Models

These Mix and Match base models must be combined with a Mix and Match cable for installation. The suffix '-MM' in the Gemeco part number designates a Mix and Match base model.

TransducerGemeco Part #Airmar Part #TiltDescription
B175C-0-H-MM41-567-2-01High Band, zero tilt
B175C-0-HW-MM41-697-2-01High Band, zero tilt, Widebeam
B175C-0-L-MM41-561-2-01Low Band, zero tilt
B175C-0-M-MM41-564-2-01Medium Band, zero tilt
B175C-12-H-MM41-568-2-0112°High Band, 12 deg tilt
B175C-12-HW-MM41-698-2-0112°High Band, 12 deg tilt, Widebeam
B175C-12-L-MM41-562-2-0112°Low Band, 12 deg tilt
B175C-12-M-MM41-565-2-0112°Medium Band, 12 deg tilt
B175C-20-H-MM41-569-2-0120°High Band, 20 deg tilt
B175C-20-HW-MM41-699-2-0120°High Band, 20 deg tilt, Widebeam
B175C-20-L-MM41-563-2-0120°Low Band, 20 deg tilt
B175C-20-M-MM41-566-2-0120°Medium Band, 20 deg tilt

Mix and Match Cables

This transducer uses the CHIRP Mix and Match system. Installation requires two parts - a base model plus one of the CHIRP Mix and Match (MMC) cables listed below.

Each base model has a 9 meter pigtail cable permanently attached. This cable ends in an Airmar 11-pin female connector. The Mix and Match cables are 1 meter long and have a male Airmar 11-pin connector at one end (to connect to the transducer pigtail) and a brand-specific connector at the other end (to connect to the sounder or fishfinder). If an owner changes their fishfinder or sounder, a different MMC cable can be installed without disturbing the transducer itself or needing to re-run cable through the boat.

Cable ConnectorGemeco Part #Airmar Part #LengthEquipment
MMC-033-1359-011 metersBare wire applications
MMC-11R-HM33-1402-011 metersRaymarine High/High Wide/Medium Band 11-pin
MMC-11R-LDB33-1357-011 metersRaymarine Low & Dual-Band 11-pin
MMC-12G33-1356-011 metersGarmin orange 12-pin
MMC-14HB33-1386-011 metersHumminbird 14-pin
MMC-8G33-1354-011 metersGarmin blue 8-pin
MMC-9N33-1394-011 metersNavico 9-pin
MMC-9N233-1395-011 metersNavico Dual 9-pin
MMC-BL33-1355-011 metersLowrance/Simrad blue 7-pin
MMC-BL233-1358-011 metersLowrance/Simrad Dual Y-cable blue 7-pin
MMC-HB33_1385-011 metersHumminbird #9

Replacement Parts

PartAirmar Part #Description
02-136-02Bronze Hull Nut
164WR-1Crows Foot Wrench
164WR-2Single Handle Wrench
164WR-3Double Handle Wrench
175WR-4Single Handle Wrench