B921 AIS Transceiver - Standard Features Only
SKU: 24733399467

B921 AIS Transceiver - Standard Features Only

Sale price$408.68 Regular price$454.09
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

B921 AIS Transceiver - Standard Features OnlyThe B921 is a 2W CSTDMA Class B AIS transceiver, delivering em trak's advanced performance and reliability through next gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real time, even at range limit, so you always have the complete picture and the time to respond. em trak's intelligent connectivity means the B921 can be connected to any chart plotter and comes equipped with integrated GPS technology and

The B921 is a 2W CSTDMA Class B AIS transceiver, delivering em-trak's advanced performance and reliability through next-gen technology. Small and durable, this trusted transceiver processes all AIS transmissions in real-time, even at range limit, so you always have the complete picture and the time to respond.

em-trak's intelligent connectivity means the B921 can be connected to any chart-plotter and comes equipped with integrated GPS technology and best-in-class, ultra low power consumption. Installation is also simplified with our unique FLEXI-FIT® bracket system to have you up and running in no time at all.

Features

I Certified AIS Class B – 2W CSTDMA
I Global certification - USCG / FCC / Canada / Europe
I SRT-AIS™ Transceiver Engine for superlative proven
performance
I FLEXI-FIT™ bracket system for easy, convenient and
secure installation
I Internal high-performance GPS receiver and antenna
(external antenna optional)

I Water, pressure spray and damp proof(IPx6, IPx7 certified)
I Protected from vibration, shock and extreme temperatures
I Small and lightweight
I Ultra-low power consumption – best in class
I NMEA 0183 & NMEA 2000
I Automated health and performance monitoring
I Silent mode (transmit-off) function
I Enhanced RF screening to protect against electromagnetic interference
I Built-in power surge protection

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 24733399467

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SChain
Massapequa, US
★★★★★ 5
Great oil and makes my engine run quieter
I noticed the engine running much quieter using this oil. The pour mouth is pretty unique for this brand, you can just open the interior cap, pull up the accordion neck and pour into the engine which provides better control over traditional wide mouth, thus less messy. This oil rarely goes on sale and is typically 1.5x to 2x more expensive than the more common US brands.
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Reviewed in the United States on August 28, 2025
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Cooch
San Leandro, US
★★★★★ 5
Best synthetic oil BMW
Excellent synthetic oil BMW 328I
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Reviewed in the United States on February 6, 2026
M
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Malu buys everything
Cuba, US
★★★★★ 5
Last long
Love it ! Since I have a BMW this oil it’s good for it . The Price is good . Last long . No engine noise Or oil burning. Even the color looks good after 3 months.
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Reviewed in the United States on March 9, 2026
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Brian Classen
Grantham, US
★★★★★ 5
FRIENDLY REMINDER Don't overtighten the bolts
MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.
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Reviewed in the United States on January 9, 2026
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Dklnyc
Birmingham, US
★★★★★ 5
Strong product
Great quality
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Reviewed in the United States on March 11, 2026

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