free gear with your purchase!
This is the best grommet I have ever worked with. Seals up and locks down so the wire can not be pulled either way. Cost reflects the build quailty and performance. I have used this not only in automotive applications but also in marine applications which says alot for the performance.
StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing
- 4 Gauge Firewall Bushing
- Water tight seal when power wires pass through metal
- Locks securely as bushing is tightened
- Authorized Internet Dealer
- 1-year Manufacturer's warranty
Firewall Bushing Features
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Warranty and Return Policy
Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Sonic Electronix
Summary of Customer Ratings & Reviews
Kyle
Kansas City, MO
Best grommet out there
September 15, 2011
56 of 66 found this helpful
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burning_soul07
Omaha, NE
Good Product
October 21, 2011
This is great for going thru the firewall. Keeps the wire safe and secure from grounding out.
55 of 66 found this helpful
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Kevin
Olive Branch, MS
Great Product
September 8, 2009
This will allow you to go through the firewall without having to worry about grommets or the metal cutting the wire. Great Idea for a product!
56 of 69 found this helpful
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MATT
STAFFORD, VA
GOOD PRODUCT
November 4, 2011
Worked like a charm could be alittle stronger plastic but still a good product.
50 of 60 found this helpful
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-Benjamin
Hampton, VA
Could be nice to use
July 22, 2012
I didn't use it. I bought my car used and the guy before me ran a system. I found the hole he used and it already had a rubber gasket type thing.
This could be very nice to have in some installation scenarios, like a complete rebuild.
Just know that you don't want your power wire chaffing on the firewall.
49 of 60 found this helpful
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Dr. B
Moyock, NC
Outstanding Product
July 28, 2013
This feed through firewall bushing is a great product. I used it when I ran my power amp wiring through the firewall. Great protection, excellent size and very convenient. I definitely feel more comfortable knowing the wires are protected. I definitely recommend this to anyone routing a cable through a metal firewall.
46 of 57 found this helpful
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4budz
Saint Louis, MO
Verified Purchase
StreetWires FB4
April 2, 2017
Nice design to guide and waterproof the wire through the firewall. Tighten snug, not necessary to over tighten to waterproof. May need a helper.
0 of 0 found this helpful
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Product Summary
Why shop Sonic?
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Customer Testimonial
“
I hooked the Hifonics BRX1200.1D up to my old 12's and it's pounding the guts out of them. I give Sonicelectronix.com and the products I've ordered 5 star's across the board. I will continue to buy my electronics from Sonicelectronix.com. Thank you Sonicelectronix.com____
”
- Rick
from Sandyville, WV
See more...Wiring Diagram Legend
Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.
Product Name: StreetWires FB4
