Garmin GPSMAP 421 Chartplotter/Fish Finder Parts
Product Description:
The GPSMAP 421 is a compact chartplotter that features an ultra-bright 4” QVGA color display
along with an improved high-speed digital design for increased map drawing and panning
speeds. It’s ready to go with a built-in, satellite-enhanced worldwide basemap and an easy-to-use
interface designed to help you navigate the open waters with ease. The GPSMAP 421 also
accepts BlueChart® g2 Vision cards for added features and functionality such as high-resolution
satellite imagery, 3-D views and Auto Guidance technology.
View Satellite-enhanced Worldwide Basemap

The GPSMAP 421 basemap contains worldwide satellite images in place of traditional maps. The
GPSMAP 421 also comes standard with a high-sensitivity GPS receiver for superior satellite
tracking and quicker acquisition times. In addition, the GPSMAP 421 can receive U.S. graphical
weather data via optional GXM 51 satellite receiver/antenna. And with an SD card slot, it’s easy
to add additional maps without connecting to a computer.
Works with:

Accessory Kits
NMEA 2000® Starter Kit
010-11442-00

Mounts
Marine swivel mounting bracket (replacement)
010-10921-00

2nd Mounting station
010-10930-00

Cables
Chartplotter Power/Data Cable
010-10917-00

NMEA 2000® Backbone Cable, 1 ft
010-11076-03

NMEA2000 BackboneCable 10m
010-11076-02

NMEA 2000® Power Cable
010-11079-00

Power/data Cable (7-pin)
010-11074-00

NMEA 2000® Backbone Cable (2 m)
010-11076-00

NMEA 2000® Backbone Cable (6 m)
010-11076-01

Cases and Covers
Protective cover (replacement)
010-10912-00

Adapters
NMEA 2000® Transducer Adapter Kit
010-11525-00

Antennas
GA 30 GPS Antenna
010-00872-00

Connectors
NMEA 2000® Field-installable Connector, Male
010-11094-00

NMEA 2000® Field-installable Connector, Female
010-11095-00

NMEA 2000® Tee Connector
010-11078-00

NMEA 2000 Terminator (Male)
010-11080-00

NMEA 2000 Terminator (Female)
010-11081-00

NMEA 2000® Inline Terminator
010-11096-00

Receivers
GXM 51
010-00753-00

Software
Chartplotter Update on SD™ card
010-00427-05

Transducers
Thru-hull Mount Smart Transducer with Depth and Temperature (20° Tilt)
010-11105-00

Thru-hull Mount Smart Transducer with Depth and Temperature (12° Tilt)
010-11105-01

Transom Mount Smart Transducer with Depth, Temperature and Speed (235 kHz, 11 degrees)
010-11050-00

Thru-hull Mount Smart Transducer with Depth, Temperature and Speed
010-11051-00

Transom Mount Smart Transducer with Depth and Temperature (235 kHz, 11 degrees)
010-11050-20

Other
Weather Cap (NMEA 2000® cable)
010-10817-01

NMEA 2000 network switch
K00-00368-00
Transducers:
Transom Mount 010-10106-00
Thru Hull 010-10107-00
In Hull 010-10224-00
Thru Hull 010-10218-00
Trolling Motor Mount 010-10200-00
Transom Mount 010-10272-00
Transom Mount 010-10192-01
In Hull 010-10327-00
Thru Hull 010-10182-01
Thru Hull 010-10194-01
Thru Hull 010-10182-00
Thru Hull 010-10194-00
Thru Hull 010-10193-01
Transom Mount 010-10105-00
Speed and Temperature Sensors:
Thru Hull 010-10365-00 Speed and Temp
Speed Sensor 010-10279-01
Temperature Probe 010-10225-00
Power and Adapter Cables:
Garmin Power/Data 010-10918-00 Cable
Transducer Cables:
10 Foot Extension 010-10715-00 Cable
20 Foot Extension 010-10716-00 Cable
Mounting Brackets and Kits:
Flush Mount Kit 010-10447-03
Protective Covers:
GPS and NMEA Accessories:
NMEA Weather Cap 010-10817-02
Suction Cup Transducer Adapter
010-10253-00
Trolling Motor Transducer Adapter
010-10251-00